Sunrise and sunset times in Portola Valley, CA
Check out today's and tomorrow's sunrise and sunset times in Portola Valley, as well as the whole calendar for September 2026.
Today
September 28, 2026. Current time: 2:30:35 pm
First light at 6:36:11 am
Sunrise time: 7:00:52 am
Sunset time: 6:58:03 pm
Last light at 7:22:44 pm
Sun position chart
Now · Sun altitude: 45.1° · Azimuth: 213° (SW)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 11 hours, 57 minutes
4 hours, 27 minutes left for today's sunset in Portola Valley
Moon set on Sep 28 at 9:18 AM
Moon will rise on Sep 28 at 7:52 PMMoon phase: 🌖 Waning Gibbous (94%)🌑 New moon: Oct 10 at 8:50 AM · 🌕 Full moon: Oct 25 at 9:13 PMTomorrow
September 29, 2026
First light at 6:37:03 am
Sunrise time: 7:01:43 am
Sunset time: 6:56:32 pm
Last light at 7:21:12 pm
Day length: 11 hours, 54 minutes
Tomorrow will be 2 minutes shorter than today in Portola Valley
Moon will set on Sep 29 at 10:31 AM Moon will rise on Sep 29 at 8:29 PMMoon phase: 🌖 Waning Gibbous (84%)
- Portola Valley, California
- Latitude: 37.384106 (North)
- Longitude: -122.235245 (West)
- Time zone: Pacific Time PDT
Shortest day in Portola Valley, CA
The shortest day of the year will be in 2 months and 23 days, during the winter solstice on December 21, 2026, with a daylight length of 9 hours and 38 minutes.Longest day in Portola Valley, CA
The longest day of the year was around 3 months ago, during the summer solstice on June 21, 2026, with a daylight length of 14 hours and 47 minutes.
September 2026 - Portola Valley, California - 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 September in Portola Valley.
The day length shortens by 1 hour, 8 minutes over the course of September 2026 in Portola Valley, CA - from 13 hours, 0 minutes on the first day to 11 hours, 52 minutes on the last day.
| Day | First Light | Sunrise | Sunset | Last Light | Day Length | Day Length Variation | Solar Noon
Time 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 Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tue, Sep 1 | 6:13:06 am | 6:38:25 am | 7:39:14 pm | 8:04:34 pm | 13h 0m 49s | -2m 18s | 1:08:50 pm | 60.7° | 5:41:25 am | 8:36:14 pm | 5:08:38 am | 9:09:01 pm | 11h 0m 1s | 🌖 (72%) |
| Wed, Sep 2 | 6:13:58 am | 6:39:15 am | 7:37:46 pm | 8:03:03 pm | 12h 58m 31s | -2m 18s | 1:08:30 pm | 60.3° | 5:42:23 am | 8:34:38 pm | 5:09:43 am | 9:07:18 pm | 11h 2m 19s | 🌖 (62%) |
| Thu, Sep 3 | 6:14:50 am | 6:40:05 am | 7:36:17 pm | 8:01:31 pm | 12h 56m 12s | -2m 19s | 1:08:11 pm | 59.9° | 5:43:20 am | 8:33:02 pm | 5:10:47 am | 9:05:34 pm | 11h 4m 37s | 🌖 (51%) |
| Fri, Sep 4 | 6:15:43 am | 6:40:54 am | 7:34:48 pm | 7:59:59 pm | 12h 53m 54s | -2m 18s | 1:07:51 pm | 59.6° | 5:44:17 am | 8:31:25 pm | 5:11:51 am | 9:03:51 pm | 11h 6m 56s | 🌗 (39%) |
| Sat, Sep 5 | 6:16:35 am | 6:41:44 am | 7:33:18 pm | 7:58:27 pm | 12h 51m 34s | -2m 20s | 1:07:31 pm | 59.2° | 5:45:14 am | 8:29:48 pm | 5:12:55 am | 9:02:07 pm | 11h 9m 15s | 🌘 (28%) |
| Sun, Sep 6 | 6:17:27 am | 6:42:33 am | 7:31:48 pm | 7:56:54 pm | 12h 49m 15s | -2m 19s | 1:07:11 pm | 58.8° | 5:46:10 am | 8:28:11 pm | 5:13:57 am | 9:00:24 pm | 11h 11m 35s | 🌘 (18%) |
| Mon, Sep 7 | 6:18:19 am | 6:43:23 am | 7:30:17 pm | 7:55:21 pm | 12h 46m 54s | -2m 21s | 1:06:50 pm | 58.4° | 5:47:06 am | 8:26:34 pm | 5:15:00 am | 8:58:40 pm | 11h 13m 55s | 🌘 (10%) |
| Tue, Sep 8 | 6:19:10 am | 6:44:12 am | 7:28:46 pm | 7:53:48 pm | 12h 44m 34s | -2m 20s | 1:06:29 pm | 58.1° | 5:48:02 am | 8:24:57 pm | 5:16:02 am | 8:56:57 pm | 11h 16m 16s | 🌘 (4%) |
| Wed, Sep 9 | 6:20:02 am | 6:45:02 am | 7:27:15 pm | 7:52:15 pm | 12h 42m 13s | -2m 21s | 1:06:08 pm | 57.7° | 5:48:57 am | 8:23:20 pm | 5:17:03 am | 8:55:14 pm | 11h 18m 36s | 🌘 (1%) |
| Thu, Sep 10 | 6:20:53 am | 6:45:51 am | 7:25:44 pm | 7:50:42 pm | 12h 39m 53s | -2m 20s | 1:05:47 pm | 57.3° | 5:49:52 am | 8:21:42 pm | 5:18:04 am | 8:53:31 pm | 11h 20m 57s | 🌑 (0.0%) |
| Fri, Sep 11 | 6:21:45 am | 6:46:41 am | 7:24:12 pm | 7:49:08 pm | 12h 37m 31s | -2m 22s | 1:05:26 pm | 56.9° | 5:50:47 am | 8:20:05 pm | 5:19:05 am | 8:51:48 pm | 11h 23m 18s | 🌒 (2%) |
| Sat, Sep 12 | 6:22:36 am | 6:47:30 am | 7:22:40 pm | 7:47:34 pm | 12h 35m 10s | -2m 21s | 1:05:05 pm | 56.5° | 5:51:42 am | 8:18:28 pm | 5:20:05 am | 8:50:05 pm | 11h 25m 40s | 🌒 (5%) |
| Sun, Sep 13 | 6:23:27 am | 6:48:20 am | 7:21:08 pm | 7:46:01 pm | 12h 32m 48s | -2m 22s | 1:04:44 pm | 56.2° | 5:52:37 am | 8:16:51 pm | 5:21:05 am | 8:48:23 pm | 11h 28m 1s | 🌒 (11%) |
| Mon, Sep 14 | 6:24:18 am | 6:49:09 am | 7:19:36 pm | 7:44:27 pm | 12h 30m 27s | -2m 21s | 1:04:22 pm | 55.8° | 5:53:31 am | 8:15:14 pm | 5:22:04 am | 8:46:41 pm | 11h 30m 23s | 🌒 (18%) |
| Tue, Sep 15 | 6:25:09 am | 6:49:59 am | 7:18:03 pm | 7:42:53 pm | 12h 28m 4s | -2m 23s | 1:04:01 pm | 55.4° | 5:54:25 am | 8:13:37 pm | 5:23:03 am | 8:44:59 pm | 11h 32m 45s | 🌒 (26%) |
| Wed, Sep 16 | 6:26:00 am | 6:50:48 am | 7:16:31 pm | 7:41:19 pm | 12h 25m 43s | -2m 21s | 1:03:40 pm | 55° | 5:55:19 am | 8:12:00 pm | 5:24:02 am | 8:43:17 pm | 11h 35m 7s | 🌒 (35%) |
| Thu, Sep 17 | 6:26:51 am | 6:51:38 am | 7:14:58 pm | 7:39:45 pm | 12h 23m 20s | -2m 23s | 1:03:18 pm | 54.6° | 5:56:13 am | 8:10:23 pm | 5:25:00 am | 8:41:36 pm | 11h 37m 30s | 🌒 (45%) |
| Fri, Sep 18 | 6:27:42 am | 6:52:28 am | 7:13:26 pm | 7:38:11 pm | 12h 20m 58s | -2m 22s | 1:02:57 pm | 54.2° | 5:57:06 am | 8:08:47 pm | 5:25:58 am | 8:39:55 pm | 11h 39m 52s | 🌓 (54%) |
| Sat, Sep 19 | 6:28:33 am | 6:53:18 am | 7:11:53 pm | 7:36:38 pm | 12h 18m 35s | -2m 23s | 1:02:35 pm | 53.8° | 5:58:00 am | 8:07:11 pm | 5:26:55 am | 8:38:15 pm | 11h 42m 14s | 🌔 (63%) |
| Sun, Sep 20 | 6:29:24 am | 6:54:07 am | 7:10:20 pm | 7:35:04 pm | 12h 16m 13s | -2m 22s | 1:02:14 pm | 53.5° | 5:58:53 am | 8:05:35 pm | 5:27:52 am | 8:36:35 pm | 11h 44m 38s | 🌔 (72%) |
| Mon, Sep 21 | 6:30:14 am | 6:54:58 am | 7:08:48 pm | 7:33:31 pm | 12h 13m 50s | -2m 23s | 1:01:53 pm | 53.1° | 5:59:46 am | 8:03:59 pm | 5:28:49 am | 8:34:56 pm | 11h 47m 0s | 🌔 (80%) |
| Tue, Sep 22 | 6:31:05 am | 6:55:48 am | 7:07:15 pm | 7:31:57 pm | 12h 11m 27s | -2m 23s | 1:01:31 pm | 52.7° | 6:00:39 am | 8:02:24 pm | 5:29:46 am | 8:33:17 pm | 11h 49m 23s | 🌔 (88%) |
| Wed, Sep 23 | 6:31:56 am | 6:56:38 am | 7:05:43 pm | 7:30:24 pm | 12h 9m 5s | -2m 22s | 1:01:10 pm | 52.3° | 6:01:32 am | 8:00:49 pm | 5:30:42 am | 8:31:39 pm | 11h 51m 45s | 🌔 (94%) |
| Thu, Sep 24 | 6:32:47 am | 6:57:28 am | 7:04:10 pm | 7:28:52 pm | 12h 6m 42s | -2m 23s | 1:00:49 pm | 51.9° | 6:02:24 am | 7:59:15 pm | 5:31:38 am | 8:30:01 pm | 11h 54m 9s | 🌔 (98%) |
| Fri, Sep 25 | 6:33:38 am | 6:58:19 am | 7:02:38 pm | 7:27:19 pm | 12h 4m 19s | -2m 23s | 1:00:29 pm | 51.5° | 6:03:17 am | 7:57:40 pm | 5:32:34 am | 8:28:23 pm | 11h 56m 32s | 🌔 (99.8%) |
| Sat, Sep 26 | 6:34:29 am | 6:59:10 am | 7:01:06 pm | 7:25:47 pm | 12h 1m 56s | -2m 23s | 1:00:08 pm | 51.1° | 6:04:09 am | 7:56:07 pm | 5:33:29 am | 8:26:47 pm | 11h 58m 55s | 🌕 (99.5%) |
| Sun, Sep 27 | 6:35:20 am | 7:00:01 am | 6:59:35 pm | 7:24:15 pm | 11h 59m 34s | -2m 22s | 12:59:48 pm | 50.7° | 6:05:02 am | 7:54:34 pm | 5:34:25 am | 8:25:11 pm | 12h 1m 17s | 🌖 (97%) |
| Mon, Sep 28 | 6:36:11 am | 7:00:52 am | 6:58:03 pm | 7:22:44 pm | 11h 57m 11s | -2m 23s | 12:59:28 pm | 50.3° | 6:05:54 am | 7:53:01 pm | 5:35:20 am | 8:23:35 pm | 12h 3m 40s | 🌖 (92%) |
| Tue, Sep 29 | 6:37:03 am | 7:01:43 am | 6:56:32 pm | 7:21:12 pm | 11h 54m 49s | -2m 22s | 12:59:08 pm | 50° | 6:06:47 am | 7:51:29 pm | 5:36:14 am | 8:22:01 pm | 12h 6m 3s | 🌖 (84%) |
| Wed, Sep 30 | 6:37:54 am | 7:02:35 am | 6:55:01 pm | 7:19:42 pm | 11h 52m 26s | -2m 23s | 12:58:48 pm | 49.6° | 6:07:39 am | 7:49:57 pm | 5:37:09 am | 8:20:27 pm | 12h 8m 26s | 🌖 (75%) |
💡 Got a cool idea? 🤦 Found any errors?
We're always improving this website!
Sunrise and Sunset photos in Portola Valley, CA
Enjoy this beautiful gallery of images of the sunset and sunrise at Portola Valley, CA. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Portola Valley, CA - 2026
The following graph shows sunrise and sunset times in Portola Valley, CA for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Portola Valley, CA.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Portola Valley, CA
In Portola Valley, CA, the earliest sunrise of 2026 is on June 13 at 5:46 am, while the latest sunrise is on October 31 at 7:31 am. The earliest sunset is on December 6 at 4:52 pm, and the latest sunset is on June 28 at 8:35 pm.
Portola Valley, CA gets 5h 09m more daylight on the longest day than on the shortest one (14h 47m versus 9h 38m). Averaged over the whole year, a day lasts 12h 14m.
Portola Valley, CA Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Portola Valley. 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 Portola Valley.
Over the year, the 12:00 Sun swings between just 29.2° above the horizon (around Dec 21) and 75.9° (around Jun 18) in Portola Valley. 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 Portola Valley, CA
These nearby towns and cities have almost the same sunrise and sunset times as Portola Valley, CA — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Woodside 3 miStanford 5 miLos Altos Hills 5 miMenlo Park 6 miAtherton 6 miPalo Alto 6 miLos Altos 7 miRedwood City 7 mi