Best time to visit San Francisco
The Golden Gate, and real summer only in Sep and Oct
- Highest-rated months
- September, October
- Other good months
- March, April, May, November
- Less favorable months
- None in this assessment
Editorial seasonal ratings describe conditions for a trip. They are not safety ratings or weather forecasts.
This destination has its own seasonal assessment.
Travel advisory snapshot
Snapshot checked 2026-10-13. Read current official guidance before booking. Seasonal suitability does not override a travel advisory.
Read the official advisoryWeather by month
| Month | Seasonal rating | Daytime high | Nighttime low | Rainfall | Seasonal reasons |
|---|---|---|---|---|---|
| January 2027 | 14.8°C / 59°F | 7.4°C / 45°F | 160 mm | Rainy season | |
| February 2027 | 16.5°C / 62°F | 8.2°C / 47°F | 154 mm | Rainy season | |
| March 2027 | 17.8°C / 64°F | 8.6°C / 47°F | 112 mm | Rainy season, Blossom season, Pleasant weather | |
| April 2027 | 19.1°C / 66°F | 9.1°C / 48°F | 57 mm | Blossom season, Pleasant weather | |
| May 2027 | 20.3°C / 69°F | 10.4°C / 51°F | 25 mm | Pleasant weather | |
| June 2027 | 21.9°C / 71°F | 11.7°C / 53°F | 7 mm | Gray & chilly | |
| July 2027 | 22.1°C / 72°F | 12.1°C / 54°F | 2 mm | Gray & chilly | |
| August 2027 | 22.5°C / 73°F | 12.9°C / 55°F | 2 mm | Gray & chilly | |
| September 2027 | 23.6°C / 74°F | 12.8°C / 55°F | 4 mm | Pleasant weather | |
| October 2026 | 22.8°C / 73°F | 11.6°C / 53°F | 42 mm | Pleasant weather, Festivals | |
| November 2026 | 18.6°C / 65°F | 9.3°C / 49°F | 86 mm | Pleasant weather, Thanksgiving | |
| December 2026 | 15.4°C / 60°F | 7.7°C / 46°F | 165 mm | Rainy season |
Scroll the table horizontally to see every column.
Long-term averages, not a forecast. Temperature and rainfall: 1991–2020; humidity and cloud: 2001–2020; sea temperature: 1991–2020. Climate snapshot prepared 2026-10-04.
Event adjustments refer to the next occurrence of each month as of 2026-10-14; the year is shown in the table.
Local food and lodging costs
National price level: 100, with the United States at 100. Reference year: 2025. This is a relative food and lodging indicator, not a trip budget; flights are excluded.
Keep exploring
Pick a month on the globe, explore a country’s regions, or open a place’s petal chart to see its year. Add a second place to compare seasonal ratings and climate. Save places to a wishlist and share your view.
Explore United States by seasonPlanning with this guide
When is the best time to visit San Francisco?
The highest seasonal ratings in this assessment are in September, October. Compare the monthly reasons and climate below before choosing your dates. Editorial seasonal ratings describe conditions for a trip. They are not safety ratings or weather forecasts.
Do good seasonal ratings mean it is safe to travel?
No. Seasonal ratings describe timing, weather and experiences. Check current official travel advisories, entry requirements and local conditions before booking.
Sources and limits
This tool uses stored snapshots and is not updated in real time. Climate averages are not forecasts, and seasonal ratings are not safety assessments. Information may be incomplete or out of date. Before booking, check current official travel advisories, entry requirements, weather forecasts and local conditions.
TerraClimate · NASA POWER · NOAA OISST · Copernicus DEM GLO-90 (2021)
How it works and data sources · Sources and third-party licenses