
Greater Farallones National Marine Sanctuary
- Annual mean
- 12.8 °C
- Warmest month
- September
- Wettest month
- December
Detailed twelve-month averages for temperature, precipitation, and regional atmospheric conditions
Review long-term climate normals for Golden Gate National Recreation Area, measured at a representative coordinate over the 1991 to 2020 climatology period. Data profiles include monthly average minimum and maximum temperatures, mean temperatures, daily precipitation rates, relative humidity, wind speeds, and daylight hours. These measurements provide a consistent baseline for understanding the annual atmospheric cycle at this California site, reflecting stable statistical averages rather than current weather or site-wide conditions.

Comparing average minimum and maximum temperatures alongside monthly precipitation rates across twelve months
Complete twelve-month baseline for temperature, precipitation, wind, and daylight norms
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 9.5 °C2.1° to 17.1° | 3.9 mm/day | 84.3% | 3.3 m/s | 9.7 hours |
| February | 10.4 °C3.3° to 18.8° | 4.2 mm/day | 82.9% | 3.5 m/s | 10.6 hours |
| March | 11.4 °C4.5° to 21.5° | 2.8 mm/day | 82% | 3.5 m/s | 11.8 hours |
| April | 12.3 °C5.1° to 24.5° | 1.3 mm/day | 79.9% | 3.8 m/s | 13 hours |
| May | 14 °C7.3° to 26.2° | 0.7 mm/day | 78.2% | 3.8 m/s | 14.1 hours |
| June | 15.9 °C9° to 30° | 0.2 mm/day | 73.7% | 3.9 m/s | 14.6 hours |
| July | 16.8 °C10.2° to 29.1° | 0 mm/day | 73.7% | 3.6 m/s | 14.3 hours |
| August | 17.4 °C11° to 30.4° | 0.1 mm/day | 72.9% | 3.5 m/s | 13.4 hours |
| September | 17.5 °C10.5° to 32.3° | 0.1 mm/day | 69.7% | 3.2 m/s | 12.2 hours |
| October | 15.8 °C8.4° to 29.5° | 1 mm/day | 69.2% | 3.1 m/s | 11 hours |
| November | 12.2 °C4.4° to 23.2° | 2.2 mm/day | 76.4% | 3.1 m/s | 9.9 hours |
| December | 9.5 °C1.9° to 17.4° | 4.1 mm/day | 81.5% | 3.5 m/s | 9.4 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparing long term averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore monthly climate normals, temperature ranges, and precipitation patterns across diverse protected landscapes.







Trace the extensive boundaries of this significant protected landscape through MoriAtlas. Examine how the diverse terrain, from redwood forests to coastal fortifications, shapes the unique geographic character of this iconic California region.