Sunrise and Sunset times in San Mateo, United States 
Today:
 Sunrise: 07:21:48
|
 Sunset: 18:26:24
|
Day Length: 11h 4m 36s
Time zone: America/Los_Angeles, UTC -7 h.
Latitude: 37.5522, Longitude: -122.312
San Mateo
☁️ Low chance of a spectacular sunset.
California, United States 
104 748 people
Current temperature 18 ° C 
Clear
| Date | Sunrise | Solar Noon | Sunset | Day length |
|---|---|---|---|---|
| 2025-Oct-01, Wednesday | 07:05:17 | 12:58:42 | 18:52:08 | 11h 46m 51s |
| 2025-Oct-02, Thursday | 07:06:09 | 12:58:23 | 18:50:37 | 11h 44m 28s |
| 2025-Oct-03, Friday | 07:07:02 | 12:58:05 | 18:49:07 | 11h 42m 5s |
| 2025-Oct-04, Saturday | 07:07:55 | 12:57:46 | 18:47:37 | 11h 39m 42s |
| 2025-Oct-05, Sunday | 07:08:49 | 12:57:28 | 18:46:08 | 11h 37m 19s |
| 2025-Oct-06, Monday | 07:09:42 | 12:57:11 | 18:44:39 | 11h 34m 57s |
| 2025-Oct-07, Tuesday | 07:10:36 | 12:56:54 | 18:43:11 | 11h 32m 35s |
| 2025-Oct-08, Wednesday | 07:11:30 | 12:56:37 | 18:41:43 | 11h 30m 13s |
| 2025-Oct-09, Thursday | 07:12:25 | 12:56:20 | 18:40:16 | 11h 27m 51s |
| 2025-Oct-10, Friday | 07:13:20 | 12:56:05 | 18:38:50 | 11h 25m 30s |
| 2025-Oct-11, Saturday | 07:14:15 | 12:55:49 | 18:37:24 | 11h 23m 9s |
| 2025-Oct-12, Sunday | 07:15:10 | 12:55:34 | 18:35:58 | 11h 20m 48s |
| 2025-Oct-13, Monday | 07:16:06 | 12:55:20 | 18:34:34 | 11h 18m 28s |
| 2025-Oct-14, Tuesday | 07:17:02 | 12:55:06 | 18:33:10 | 11h 16m 8s |
| 2025-Oct-15, Wednesday | 07:17:59 | 12:54:53 | 18:31:47 | 11h 13m 48s |
| 2025-Oct-16, Thursday | 07:18:56 | 12:54:40 | 18:30:25 | 11h 11m 29s |
| 2025-Oct-17, Friday | 07:19:53 | 12:54:28 | 18:29:04 | 11h 9m 11s |
| 2025-Oct-18, Saturday | 07:20:50 | 12:54:17 | 18:27:43 | 11h 6m 53s |
| 2025-Oct-19, Sunday | 07:21:48 | 12:54:06 | 18:26:24 | 11h 4m 36s |
| 2025-Oct-20, Monday | 07:22:46 | 12:53:56 | 18:25:05 | 11h 2m 19s |
| 2025-Oct-21, Tuesday | 07:23:45 | 12:53:46 | 18:23:47 | 11h 0m 2s |
| 2025-Oct-22, Wednesday | 07:24:44 | 12:53:37 | 18:22:31 | 10h 57m 47s |
| 2025-Oct-23, Thursday | 07:25:43 | 12:53:29 | 18:21:15 | 10h 55m 32s |
| 2025-Oct-24, Friday | 07:26:43 | 12:53:22 | 18:20:01 | 10h 53m 18s |
| 2025-Oct-25, Saturday | 07:27:43 | 12:53:15 | 18:18:47 | 10h 51m 4s |
| 2025-Oct-26, Sunday | 07:28:43 | 12:53:09 | 18:17:35 | 10h 48m 52s |
| 2025-Oct-27, Monday | 07:29:43 | 12:53:03 | 18:16:24 | 10h 46m 41s |
| 2025-Oct-28, Tuesday | 07:30:44 | 12:52:59 | 18:15:14 | 10h 44m 30s |
| 2025-Oct-29, Wednesday | 07:31:45 | 12:52:55 | 18:14:05 | 10h 42m 20s |
| 2025-Oct-30, Thursday | 07:32:47 | 12:52:52 | 18:12:57 | 10h 40m 10s |
| 2025-Oct-31, Friday | 07:33:48 | 12:52:50 | 18:11:51 | 10h 38m 3s |
Day length in San Mateo during the year on the chart:
San Mateo on United States map:
Locations in the same time zone America/Los_Angeles
Los Angeles (California), Seattle (Washington), San Francisco (California), San Diego (California), Riverside (California), Las Vegas (Nevada), Portland (Oregon), Sacramento (California), San Jose (California), Fresno (California), Concord (California), Mission Viejo (California), Bakersfield (California), Murrieta (California), Long Beach (California), Reno (Nevada), Oakland (California), Indio (California), Spokane (Washington), Stockton (California), Oxnard (California), Modesto (California), Anaheim (California), Lancaster (California), Victorville (California), Santa Ana (California), Santa Rosa (California), Santa Clarita (California), Antioch (California), Henderson (Nevada)
Largest populated areas in United States
New York (New York), Los Angeles (California), Chicago (Illinois), Miami (Florida), Dallas (Texas), Philadelphia (Pennsylvania), Houston (Texas), Washington (District of Columbia), Atlanta (Georgia), Boston (Massachusetts), Phoenix (Arizona), Seattle (Washington), San Francisco (California), Detroit (Michigan), San Diego (California), Minneapolis (Minnesota), Tampa (Florida), Denver (Colorado), Brooklyn (New York), Queens (New York), Baltimore (Maryland), Riverside (California), St. Louis (Missouri), Las Vegas (Nevada), Portland (Oregon), San Antonio (Texas), Sacramento (California), San Jose (California), Orlando (Florida), Cleveland (Ohio)
Countries closest to United States
*Calculation of distances from capital to capital
Daylight Hours FAQ: 10 Most Googled Questions Answered
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks