Thornton State Beach — a state park in San Mateo County, California — is a lesser-known subject for landscape photographers. The nearest town is Broadmoor, about 1.6 km (1.0 mi) away (Thornton State Beach lies WSW of town).
Thornton State Beach is a protected beach in the state park system of California, United States. It is located on the Pacific coast of Daly City in the San Francisco Bay Area. The 58-acre (23 ha) park was established in 1955. The Mediterranean climate tends toward cold and wind, with fog common in summer. The beach was named for the first white settler of the area, one Robert S. Thornton of Rhode Island, a blacksmith who had arrived in the San Francisco area in 1851. The park was closed in 2009 due to damage and continued danger from landslides, but as of late 2021 is fully open.From the Wikipedia article “Thornton State Beach”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Thornton State Beach the sunrise point swings a long way through the year: about 59° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 301° (WNW) in June to 241° (WSW) in December, and the midday sun climbs to 76° in summer but only 29° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:14 AM | 90° E | 7:22 PM | 271° W | 52° | 12h 08m |
| June solstice (Jun 21) | 5:49 AM | 59° ENE | 8:36 PM | 301° WNW | 76° | 14h 46m |
| September equinox (Sep 22) | 6:59 AM | 89° E | 7:09 PM | 271° W | 53° | 12h 10m |
| December solstice (Dec 21) | 7:22 AM | 120° ESE | 4:56 PM | 241° WSW | 29° | 9h 33m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
State parks often protect a signature feature — a gorge, lake or overlook — that is best in early morning before visitors and harsh light arrive.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:56 AM | 7:25 AM | 8:04 AM | 4:36 PM | 5:15 PM | 5:44 PM | 9h 51m |
| February | 6:34 AM | 7:00 AM | 7:37 AM | 5:13 PM | 5:50 PM | 6:16 PM | 10h 49m |
| March | 6:56 AM | 7:22 AM | 7:57 AM | 6:43 PM | 7:18 PM | 7:44 PM | 11h 56m |
| April | 6:08 AM | 6:36 AM | 7:11 AM | 7:11 PM | 7:46 PM | 8:13 PM | 13h 10m |
| May | 5:32 AM | 6:01 AM | 6:39 AM | 7:36 PM | 8:13 PM | 8:43 PM | 14h 12m |
| June | 5:17 AM | 5:49 AM | 6:28 AM | 7:55 PM | 8:34 PM | 9:05 PM | 14h 45m |
| July | 5:31 AM | 6:01 AM | 6:39 AM | 7:54 PM | 8:32 PM | 9:03 PM | 14h 31m |
| August | 5:59 AM | 6:27 AM | 7:02 AM | 7:28 PM | 8:04 PM | 8:32 PM | 13h 38m |
| September | 6:26 AM | 6:53 AM | 7:27 AM | 6:45 PM | 7:19 PM | 7:46 PM | 12h 27m |
| October | 6:52 AM | 7:19 AM | 7:54 AM | 5:58 PM | 6:34 PM | 7:00 PM | 11h 15m |
| November | 6:23 AM | 6:51 AM | 7:29 AM | 4:22 PM | 5:00 PM | 5:28 PM | 10h 09m |
| December | 6:50 AM | 7:19 AM | 8:00 AM | 4:12 PM | 4:53 PM | 5:23 PM | 9h 34m |
Local time (America/Los Angeles), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Thornton State Beach, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.3 hours on a moonless night), and the core peaks around 23° above the southern horizon. Our light-pollution model puts the sky at about Bortle 8 (city sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -1° | — |
| February | 5:08 AM – 5:28 AM | 0.3 | 13° | SE → SE |
| March | 4:15 AM – 5:45 AM | 1.5 | 20° | SE → SSE |
| April | 2:19 AM – 4:59 AM | 2.7 | 23° | SE → S |
| May | 12:18 AM – 4:08 AM | 3.8 | 23° | SE → S |
| June | 10:29 PM – 3:49 AM | 5.3 | 23° | SE → SW |
| July | 10:22 PM – 2:22 AM | 4.0 | 23° | SSE → SW |
| August | 9:42 PM – 12:22 AM | 2.7 | 23° | S → SW |
| September | 8:48 PM – 10:18 PM | 1.5 | 20° | SSW → SW |
| October | 8:01 PM – 8:21 PM | 0.3 | 13° | SW → SW |
| November | Below 10° in darkness | — | 1° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 8 Bortle 8 — City sky. Only bright constellations are visible; the sky glows orange or white. Modeled zenith brightness ≈ 18.29 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show October as the clearest month (about 44% average cloud cover) and December as the cloudiest (59%). September is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 67 | 69 | 76 | 80 | 87 | 88 | 78 | 85 | 94 | 84 | 78 | 65 |
| Low °F | 36 | 40 | 41 | 43 | 45 | 48 | 51 | 53 | 51 | 47 | 39 | 36 |
| Precip. (in) | 3.4 | 3.7 | 2.9 | 1.6 | 0.6 | 0.2 | 0.1 | 0.1 | 0.1 | 1.0 | 2.2 | 4.4 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this state park
- Day-use fees or passes are common; buy them online before arriving.
- Check park hours: many state parks close at dusk, which affects sunset and night shooting.
- Ask rangers about photography permits for commercial work, models or drones.
- Weekday mornings are the least crowded at popular viewpoints.
- Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.
Season: Spring wildflowers and autumn color are peak seasons in most parks.
Suggested gear: Versatile zoom lens, Tripod, Park pass. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drone rules in state parks vary by state and even by park — many require a permit or ban recreational drone flights. Check the park's rules and the FAA B4UFLY app before flying.
Nearby photo spots
Other locations within 40 km of Thornton State Beach, closest first.
Lake
Mountain Peak
State Park
Mountain Peak
Lake
Mountain Peak
Mountain Peak
State Park
BeachCampgrounds nearby (Recreation.gov)
- Rob Hill Group Campground12.9 km (8.0 mi) · reservable
- Aquatic Park Cove, Black Point Overnight Anchoring, Sailing Vessels Only (Auxiliary Engine Ok)15.5 km (9.6 mi) · reservable
- Bicentennial Campground16.6 km (10.3 mi) · reservable
- Kirby Cove Campground17.5 km (10.9 mi) · reservable
- Hawk Campground19.1 km (11.8 mi) · reservable
FAQ
When is the best time to photograph Thornton State Beach?
What time is golden hour at Thornton State Beach?
Where does the sun rise and set at Thornton State Beach?
Can you see the Milky Way from Thornton State Beach?
Do you need a permit to photograph at Thornton State Beach?
How far is Thornton State Beach from Broadmoor?
Sources
Location data: Wikidata, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.