Sunrise and sunset times in Mercer Island, WA
EditCheck out today's and tomorrow's sunrise and sunset times in Mercer Island, as well as the whole calendar for October 2026.
Today
October 21, 2026. Current time: 7:01:59 pm
Night ends at 5:54 am5:53:49 am
Start of astronomical twilight: the Sun is 18° below the horizon and the sky begins to brighten, too faintly to notice in a city.·First light at 7:05 am7:05:17 am
Start of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.
Sunrise time: 7:36:42 am PDTWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley).
Sunset time: 6:09:26 pm PDTWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley).
Dark at 6:41 pm6:40:48 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:52 pm7:52:08 pm
End of astronomical twilight: the Sun is 18° below the horizon and the sky is dark enough to see the faintest stars. In a city it looks dark sooner.
Mercer Island Tides
Low 9:33 pm 4.2 ftHigh 2:47 am 8.1 ftDuwamish Waterway, Eighth Ave. South
| High tide | 1:42 am | 7.5 ft | 2.30 m |
|---|---|---|---|
| Low tide | 7:48 am | 2.2 ft | 0.68 m |
| High tide | 2:59 pm | 10.5 ft | 3.19 m |
| Low tide | 9:33 pm | 4.2 ft | 1.27 m |
| High tide | 2:47 am | 8.1 ft | 2.47 m |
|---|---|---|---|
| Low tide | 8:41 am | 2.6 ft | 0.78 m |
| High tide | 3:23 pm | 10.7 ft | 3.25 m |
| Low tide | 9:55 pm | 3.0 ft | 0.91 m |
Tide predictions: NOAA, station 9447029, Duwamish Waterway, Eighth Ave. South (subordinate station: highs and lows from NOAA, curve between them interpolated), heights above Mean Lower Low Water, local time. Predictions, not observations: wind and pressure change the real water level. Not for navigation.
Sun position chart
Now · Sun altitude: -9.53° (below the horizon) · Azimuth: 264.1° (W)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 10 hours, 32 minutes
Sunset in Mercer Island was 52 minutes ago
Moon set on Oct 21 at 2:16 am
Moon rose on Oct 21 at 4:16 pmMoon phase: 🌔 Waxing Gibbous (81%)🌕 Full moon: Oct 25 at 9:11 pm · 🌑 New moon: Nov 8 at 11:02 pmTomorrow
October 22, 2026
Night ends at 5:55 am5:55:12 am
Start of astronomical twilight: the Sun is 18° below the horizon and the sky begins to brighten, too faintly to notice in a city.·First light at 7:07 am7:06:42 am
Start of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.
Sunrise time: 7:38:10 am PDTWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley).
Sunset time: 6:07:40 pm PDTWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley).
Dark at 6:39 pm6:39:06 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:50 pm7:50:28 pm
End of astronomical twilight: the Sun is 18° below the horizon and the sky is dark enough to see the faintest stars. In a city it looks dark sooner.
Day length: 10 hours, 29 minutes
Tomorrow will be 3 minutes shorter than today in Mercer Island
Moon will set on Oct 22 at 3:28 am Moon will rise on Oct 22 at 4:32 pmMoon phase: 🌔 Waxing Gibbous (90%)
- Mercer Island, Washington
- Latitude: 47.570656 (North)
- Longitude: -122.222069 (West)
- Time zone: Pacific Daylight Time (PDT, UTC−7)
Shortest day in Mercer Island, WA
The shortest day of the year will be in 2 months and 0 days, during the winter solstice on December 21, 2026, with a daylight length of 8 hours, 25 minutes.Longest day in Mercer Island, WA
The longest day of the year was around 4 months ago, during the summer solstice on June 21, 2026, with a daylight length of 15 hours, 58 minutes.
October 2026 - Mercer Island, Washington - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of October in Mercer Island.
All times are in Mercer Island's time: Pacific Daylight Time (PDT, UTC−7).
The day length shortens by 1 hour, 39 minutes over the course of October 2026 in Mercer Island, WA - from 11 hours, 39 minutes on the first day to 10 hours on the last day.
| Day | First LightStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light. | SunriseWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley). | Sunrise Variation |
SunsetWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley). | Sunset Variation |
Last LightEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors. | Day Length | Day Length Variation | Solar NoonTime of day when the sun reaches its highest point in the sky. | Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night LengthCalculated from this day's sunset to the next day's sunrise. | Moon phase | Solar Midnight | Sun DeclinationThe latitude where the Sun is directly overhead at solar noon (the Sun's declination). It moves between the two tropics through the year. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thu, Oct 1 | Twilight startStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.6:37:32 am | 7:08:13 am | +1m 23s | 6:47:52 pm | -2m 1s | Twilight endEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.7:18:29 pm | 11h 39m 39s | -3m 24s | Solar noonTime of day when the sun reaches its highest point in the sky.12:58:27 pm | 39.00° | 6:01:46 am | 7:54:08 pm | 5:25:22 am | 8:30:24 pm | Night lengthCalculated from this day's sunset to the next day's sunrise.12h 21m 43s | 🌖 (64%)Waning Gibbous: 64% illuminated at midnight, at the end of the day | 12:58:37 am | 3.4° S |
| Fri, Oct 2 | 6:38:54 am | 7:09:35 am | +1m 22s | 6:45:51 pm | -2m 1s | 7:16:29 pm | 11h 36m 16s | -3m 24s | 12:58:08 pm | 38.61° | 6:03:10 am | 7:52:06 pm | 5:26:51 am | 8:28:18 pm | 12h 25m 8s | 🌖 (53%)Waning Gibbous: 53% illuminated at midnight, at the end of the day | 12:58:18 am | 3.8° S |
| Sat, Oct 3 | 6:40:16 am | 7:10:59 am | +1m 24s | 6:43:51 pm | -2m 0s | 7:14:29 pm | 11h 32m 52s | -3m 24s | 12:57:49 pm | 38.22° | 6:04:34 am | 7:50:05 pm | 5:28:19 am | 8:26:12 pm | 12h 28m 31s | 🌗 (42%) Last quarter at 6:25 amLast quarter at 6:25 am. At midnight, at the end of the day: 42% illuminated |
12:57:59 am | 4.2° S |
| Sun, Oct 4 | 6:41:39 am | 7:12:22 am | +1m 23s | 6:41:50 pm | -2m 1s | 7:12:30 pm | 11h 29m 28s | -3m 23s | 12:57:30 pm | 37.84° | 6:05:58 am | 7:48:05 pm | 5:29:47 am | 8:24:08 pm | 12h 31m 55s | 🌘 (31%)Waning Crescent: 31% illuminated at midnight, at the end of the day | 12:57:39 am | 4.6° S |
| Mon, Oct 5 | 6:43:01 am | 7:13:45 am | +1m 23s | 6:39:51 pm | -1m 59s | 7:10:31 pm | 11h 26m 6s | -3m 23s | 12:57:12 pm | 37.45° | 6:07:22 am | 7:46:05 pm | 5:31:15 am | 8:22:05 pm | 12h 35m 18s | 🌘 (21%)Waning Crescent: 21% illuminated at midnight, at the end of the day | 12:57:21 am | 5.0° S |
| Tue, Oct 6 | 6:44:24 am | 7:15:09 am | +1m 24s | 6:37:52 pm | -1m 59s | 7:08:33 pm | 11h 22m 43s | -3m 23s | 12:56:54 pm | 37.07° | 6:08:45 am | 7:44:07 pm | 5:32:42 am | 8:20:03 pm | 12h 38m 41s | 🌘 (13%)Waning Crescent: 13% illuminated at midnight, at the end of the day | 12:57:03 am | 5.4° S |
| Wed, Oct 7 | 6:45:47 am | 7:16:33 am | +1m 24s | 6:35:53 pm | -1m 59s | 7:06:36 pm | 11h 19m 20s | -3m 23s | 12:56:37 pm | 36.69° | 6:10:08 am | 7:42:09 pm | 5:34:09 am | 8:18:02 pm | 12h 42m 5s | 🌘 (6%)Waning Crescent: 6% illuminated at midnight, at the end of the day | 12:56:46 am | 5.7° S |
| Thu, Oct 8 | 6:47:10 am | 7:17:58 am | +1m 25s | 6:33:55 pm | -1m 58s | 7:04:39 pm | 11h 15m 57s | -3m 22s | 12:56:20 pm | 36.31° | 6:11:32 am | 7:40:12 pm | 5:35:35 am | 8:16:02 pm | 12h 45m 27s | 🌘 (2%)Waning Crescent: 2% illuminated at midnight, at the end of the day | 12:56:29 am | 6.1° S |
| Fri, Oct 9 | 6:48:32 am | 7:19:22 am | +1m 24s | 6:31:57 pm | -1m 58s | 7:02:44 pm | 11h 12m 35s | -3m 22s | 12:56:03 pm | 35.93° | 6:12:55 am | 7:38:16 pm | 5:37:01 am | 8:14:04 pm | 12h 48m 50s | 🌘 (0.2%)Waning Crescent: 0.2% illuminated at midnight, at the end of the day | 12:56:11 am | 6.5° S |
| Sat, Oct 10 | 6:49:55 am | 7:20:47 am | +1m 25s | 6:30:00 pm | -1m 57s | 7:00:49 pm | 11h 9m 13s | -3m 22s | 12:55:47 pm | 35.55° | 6:14:18 am | 7:36:22 pm | 5:38:27 am | 8:12:07 pm | 12h 52m 13s | 🌑 (1%) New moon at 8:50 amNew moon at 8:50 am. At midnight, at the end of the day: 1% illuminated |
12:55:55 am | 6.9° S |
| Sun, Oct 11 | 6:51:19 am | 7:22:13 am | +1m 26s | 6:28:04 pm | -1m 56s | 6:58:55 pm | 11h 5m 51s | -3m 21s | 12:55:32 pm | 35.17° | 6:15:41 am | 7:34:28 pm | 5:39:52 am | 8:10:11 pm | 12h 55m 34s | 🌒 (3%)Waxing Crescent: 3% illuminated at midnight, at the end of the day | 12:55:40 am | 7.3° S |
| Mon, Oct 12 | 6:52:42 am | 7:23:38 am | +1m 25s | 6:26:09 pm | -1m 55s | 6:57:02 pm | 11h 2m 31s | -3m 21s | 12:55:16 pm | 34.80° | 6:17:04 am | 7:32:35 pm | 5:41:17 am | 8:08:16 pm | 12h 58m 55s | 🌒 (7%)Waxing Crescent: 7% illuminated at midnight, at the end of the day | 12:55:23 am | 7.6° S |
| Tue, Oct 13 | 6:54:05 am | 7:25:04 am | +1m 26s | 6:24:14 pm | -1m 55s | 6:55:10 pm | 10h 59m 10s | -3m 21s | 12:55:02 pm | 34.42° | 6:18:27 am | 7:30:44 pm | 5:42:42 am | 8:06:23 pm | 13h 2m 16s | 🌒 (13%)Waxing Crescent: 13% illuminated at midnight, at the end of the day | 12:55:09 am | 8.0° S |
| Wed, Oct 14 | 6:55:29 am | 7:26:30 am | +1m 26s | 6:22:20 pm | -1m 54s | 6:53:18 pm | 10h 55m 50s | -3m 20s | 12:54:48 pm | 34.05° | 6:19:49 am | 7:28:53 pm | 5:44:06 am | 8:04:31 pm | 13h 5m 37s | 🌒 (20%)Waxing Crescent: 20% illuminated at midnight, at the end of the day | 12:54:55 am | 8.4° S |
| Thu, Oct 15 | 6:56:52 am | 7:27:57 am | +1m 27s | 6:20:27 pm | -1m 53s | 6:51:28 pm | 10h 52m 30s | -3m 20s | 12:54:34 pm | 33.68° | 6:21:12 am | 7:27:04 pm | 5:45:30 am | 8:02:41 pm | 13h 8m 56s | 🌒 (28%)Waxing Crescent: 28% illuminated at midnight, at the end of the day | 12:54:41 am | 8.7° S |
| Fri, Oct 16 | 6:58:16 am | 7:29:23 am | +1m 26s | 6:18:34 pm | -1m 53s | 6:49:39 pm | 10h 49m 11s | -3m 19s | 12:54:21 pm | 33.31° | 6:22:35 am | 7:25:16 pm | 5:46:54 am | 8:00:51 pm | 13h 12m 16s | 🌒 (37%)Waxing Crescent: 37% illuminated at midnight, at the end of the day | 12:54:27 am | 9.1° S |
| Sat, Oct 17 | 6:59:40 am | 7:30:50 am | +1m 27s | 6:16:43 pm | -1m 51s | 6:47:50 pm | 10h 45m 53s | -3m 19s | 12:54:09 pm | 32.95° | 6:23:57 am | 7:23:29 pm | 5:48:17 am | 7:59:04 pm | 13h 15m 35s | 🌒 (46%)Waxing Crescent: 46% illuminated at midnight, at the end of the day | 12:54:15 am | 9.5° S |
| Sun, Oct 18 | 7:01:04 am | 7:32:18 am | +1m 28s | 6:14:52 pm | -1m 51s | 6:46:03 pm | 10h 42m 34s | -3m 18s | 12:53:57 pm | 32.59° | 6:25:20 am | 7:21:44 pm | 5:49:41 am | 7:57:18 pm | 13h 18m 53s | 🌓 (56%) First quarter at 9:12 amFirst quarter at 9:12 am. At midnight, at the end of the day: 56% illuminated |
12:54:03 am | 9.8° S |
| Mon, Oct 19 | 7:02:28 am | 7:33:45 am | +1m 27s | 6:13:03 pm | -1m 49s | 6:44:17 pm | 10h 39m 18s | -3m 17s | 12:53:46 pm | 32.23° | 6:26:42 am | 7:20:00 pm | 5:51:04 am | 7:55:33 pm | 13h 22m 10s | 🌔 (65%)Waxing Gibbous: 65% illuminated at midnight, at the end of the day | 12:53:52 am | 10.2° S |
| Tue, Oct 20 | 7:03:53 am | 7:35:13 am | +1m 28s | 6:11:14 pm | -1m 49s | 6:42:32 pm | 10h 36m 1s | -3m 17s | 12:53:35 pm | 31.87° | 6:28:05 am | 7:18:17 pm | 5:52:27 am | 7:53:50 pm | 13h 25m 28s | 🌔 (74%)Waxing Gibbous: 74% illuminated at midnight, at the end of the day | 12:53:40 am | 10.6° S |
| Wed, Oct 21 | 7:05:17 am | 7:36:42 am | +1m 29s | 6:09:26 pm | -1m 48s | 6:40:48 pm | 10h 32m 44s | -3m 16s | 12:53:25 pm | 31.51° | 6:29:27 am | 7:16:35 pm | 5:53:49 am | 7:52:08 pm | 13h 28m 44s | 🌔 (83%)Waxing Gibbous: 83% illuminated at midnight, at the end of the day | 12:53:30 am | 10.9° S |
| Thu, Oct 22 | 7:06:42 am | 7:38:10 am | +1m 28s | 6:07:40 pm | -1m 46s | 6:39:06 pm | 10h 29m 30s | -3m 15s | 12:53:16 pm | 31.16° | 6:30:49 am | 7:14:55 pm | 5:55:12 am | 7:50:28 pm | 13h 31m 59s | 🌔 (90%)Waxing Gibbous: 90% illuminated at midnight, at the end of the day | 12:53:20 am | 11.3° S |
| Fri, Oct 23 | 7:08:07 am | 7:39:39 am | +1m 29s | 6:05:54 pm | -1m 46s | 6:37:24 pm | 10h 26m 15s | -3m 14s | 12:53:08 pm | 30.81° | 6:32:12 am | 7:13:16 pm | 5:56:34 am | 7:48:50 pm | 13h 35m 14s | 🌔 (95%)Waxing Gibbous: 95% illuminated at midnight, at the end of the day | 12:53:12 am | 11.6° S |
| Sat, Oct 24 | 7:09:31 am | 7:41:08 am | +1m 29s | 6:04:10 pm | -1m 44s | 6:35:44 pm | 10h 23m 2s | -3m 13s | 12:53:00 pm | 30.46° | 6:33:34 am | 7:11:39 pm | 5:57:56 am | 7:47:13 pm | 13h 38m 27s | 🌔 (99%)Waxing Gibbous: 99% illuminated at midnight, at the end of the day | 12:53:04 am | 12.0° S |
| Sun, Oct 25 | 7:10:56 am | 7:42:37 am | +1m 29s | 6:02:27 pm | -1m 43s | 6:34:06 pm | 10h 19m 50s | -3m 12s | 12:52:53 pm | 30.12° | 6:34:56 am | 7:10:03 pm | 5:59:18 am | 7:45:38 pm | 13h 41m 40s | 🌕 (99.8%) Full moon at 9:11 pmFull moon at 9:11 pm. At midnight, at the end of the day: 99.8% illuminated |
12:52:56 am | 12.3° S |
| Mon, Oct 26 | 7:12:22 am | 7:44:07 am | +1m 30s | 6:00:45 pm | -1m 42s | 6:32:29 pm | 10h 16m 38s | -3m 11s | 12:52:47 pm | 29.78° | 6:36:18 am | 7:08:29 pm | 6:00:39 am | 7:44:04 pm | 13h 44m 52s | 🌖 (98%)Waning Gibbous: 98% illuminated at midnight, at the end of the day | 12:52:50 am | 12.7° S |
| Tue, Oct 27 | 7:13:47 am | 7:45:37 am | +1m 30s | 5:59:05 pm | -1m 40s | 6:30:53 pm | 10h 13m 28s | -3m 10s | 12:52:41 pm | 29.44° | 6:37:40 am | 7:06:56 pm | 6:02:00 am | 7:42:32 pm | 13h 48m 2s | 🌖 (94%)Waning Gibbous: 94% illuminated at midnight, at the end of the day | 12:52:44 am | 13.0° S |
| Wed, Oct 28 | 7:15:12 am | 7:47:07 am | +1m 30s | 5:57:26 pm | -1m 39s | 6:29:18 pm | 10h 10m 19s | -3m 9s | 12:52:36 pm | 29.11° | 6:39:03 am | 7:05:25 pm | 6:03:21 am | 7:41:02 pm | 13h 51m 11s | 🌖 (87%)Waning Gibbous: 87% illuminated at midnight, at the end of the day | 12:52:38 am | 13.3° S |
| Thu, Oct 29 | 7:16:37 am | 7:48:37 am | +1m 30s | 5:55:48 pm | -1m 38s | 6:27:45 pm | 10h 7m 11s | -3m 8s | 12:52:32 pm | 28.77° | 6:40:25 am | 7:03:55 pm | 6:04:42 am | 7:39:34 pm | 13h 54m 19s | 🌖 (78%)Waning Gibbous: 78% illuminated at midnight, at the end of the day | 12:52:34 am | 13.7° S |
| Fri, Oct 30 | 7:18:03 am | 7:50:07 am | +1m 30s | 5:54:11 pm | -1m 37s | 6:26:14 pm | 10h 4m 4s | -3m 7s | 12:52:29 pm | 28.45° | 6:41:47 am | 7:02:28 pm | 6:06:03 am | 7:38:08 pm | 13h 57m 27s | 🌖 (68%)Waning Gibbous: 68% illuminated at midnight, at the end of the day | 12:52:31 am | 14.0° S |
| Sat, Oct 31 | 7:19:28 am | 7:51:38 am | +1m 31s | 5:52:36 pm | -1m 35s | 6:24:44 pm | 10h 0m 58s | -3m 6s | 12:52:26 pm | 28.12° | 6:43:08 am | 7:01:01 pm | 6:07:23 am | 7:36:43 pm | 14h 0m 33s | 🌖 (56%)Waning Gibbous: 56% illuminated at midnight, at the end of the day | 12:52:27 am | 14.3° S |
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Year distribution of sunrise and sunset times in Mercer Island, WA - 2026
The following graph shows sunrise and sunset times in Mercer Island, WA for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Mercer Island, WA.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Mercer Island, WA
In Mercer Island, WA, the earliest sunrise of 2026 is on June 16 at 5:10 am, while the latest sunrise is on January 1 at 7:56 am. The earliest sunset is on December 10 at 4:17 pm, and the latest sunset is on June 25 at 9:10 pm.
Mercer Island, WA gets 7h 33m more daylight on the longest day than on the shortest one (15h 58m versus 8h 25m). Averaged over the whole year, a day lasts 12h 14m.
Mercer Island, WA Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Mercer Island. Throughout the year, it slowly traces this figure-eight:
Move along the curve to read the Sun's altitude and azimuth for any day of the year in Mercer Island.
Over the year, the 12:00 Sun swings between just 19° above the horizon (around Dec 21) and 65.8° (around Jun 21) in Mercer Island. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma.
Detailed Analemma Chart
The technical chart below plots one dot per day, labels the first day of each month, marks the solstices, equinoxes, perihelion and aphelion, and draws the noon altitude of the equinoxes (90° minus your latitude) together with its ±23.4° seasonal limits.
Why does the figure look wider here than in the sky view above?
Both draw the same data, but with different conventions. The sky view uses the same scale on both axes, so it shows the analemma with its true proportions, as a camera would capture it: about 47° tall and only a few degrees wide. This chart, like most technical analemma diagrams, stretches each axis independently to fill the plot, expanding the narrow azimuth range several times so its day-to-day variation can actually be read. Also, azimuth is not sky distance: near the zenith, one degree of azimuth spans much less than one degree across the sky, which further widens the figure in this representation.
Places near Mercer Island, WA
These nearby towns and cities have almost the same sunrise and sunset times as Mercer Island, WA — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Beaux Arts 1 miBellevue 3 miMedina 3 miNewcastle 4 miClyde Hill 4 miHunts Point 5 miYarrow Point 5 miSeattle 6 mi
Indonesia
Eswatini
Lesotho
Puerto Rico