Our verdict
The best time to visit San Francisco is November
In summer, temperatures can reach as high as 26℃ (79℉) in the middle of the day. The weather in the winter, especially around December, can reach a minimum of 5℃ (42℉).
The days are longest in San Francisco in July, so if you want to see the sights during the day when the sun is up for the longest time, it’s best to visit around that time of year. On average it rains the most days in February, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.
Keep reading to find out more detailed information about the seasons and climate in San Francisco, as well as our favourite tools to help you find the best options for transport, accommodation, and much more.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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San Francisco seasons
Before you continue, it’s important to know when the seasons are in San Francisco as they might be different to yours depending on where in the world you’re travelling from. San Francisco is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in San Francisco
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in San Francisco for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
San Francisco climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in San Francisco for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
San Francisco in January
- Average temperature: 10℃ (51℉)
- Average high temperature: 14℃ (56℉)
- Average low temperature: 8℃ (46℉)
- Average humidity: 73%
- Average sunny days: 22 days
- Average rainfall: 26mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in January, make sure you pack a warm jacket or coat.
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San Francisco in February
- Average temperature: 11℃ (52℉)
- Average high temperature: 15℃ (58℉)
- Average low temperature: 8℃ (46℉)
- Average humidity: 74%
- Average sunny days: 21 days
- Average rainfall: 35mm (1") over 6 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in February, make sure you pack a warm jacket or coat.
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San Francisco in March
- Average temperature: 12℃ (53℉)
- Average high temperature: 16℃ (60℉)
- Average low temperature: 8℃ (47℉)
- Average humidity: 75%
- Average sunny days: 21 days
- Average rainfall: 22mm (1") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in March, make sure you pack a warm jacket or coat.
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San Francisco in April
- Average temperature: 13℃ (56℉)
- Average high temperature: 17℃ (63℉)
- Average low temperature: 9℃ (49℉)
- Average humidity: 73%
- Average sunny days: 24 days
- Average rainfall: 7mm (0") over 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in April, make sure you pack a warm jacket or coat.
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San Francisco in May
- Average temperature: 14℃ (58℉)
- Average high temperature: 19℃ (66℉)
- Average low temperature: 10℃ (51℉)
- Average humidity: 73%
- Average sunny days: 25 days
- Average rainfall: 9mm (0") over 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in May, make sure you pack a warm jacket or coat.
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San Francisco in June
- Average temperature: 16℃ (62℉)
- Average high temperature: 22℃ (71℉)
- Average low temperature: 12℃ (54℉)
- Average humidity: 71%
- Average sunny days: 25 days
- Average rainfall: 3mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in June, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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San Francisco in July
- Average temperature: 17℃ (63℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 72%
- Average sunny days: 24 days
- Average rainfall: 2mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in July, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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San Francisco in August
- Average temperature: 17℃ (63℉)
- Average high temperature: 23℃ (73℉)
- Average low temperature: 13℃ (56℉)
- Average humidity: 74%
- Average sunny days: 23 days
- Average rainfall: 2mm (0") over 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in August, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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San Francisco in September
- Average temperature: 18℃ (64℉)
- Average high temperature: 23℃ (74℉)
- Average low temperature: 14℃ (57℉)
- Average humidity: 69%
- Average sunny days: 24 days
- Average rainfall: 2mm (0") over 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
San Francisco in October
- Average temperature: 16℃ (61℉)
- Average high temperature: 20℃ (69℉)
- Average low temperature: 13℃ (55℉)
- Average humidity: 67%
- Average sunny days: 26 days
- Average rainfall: 9mm (0") over 3 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in October, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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San Francisco in November
- Average temperature: 13℃ (55℉)
- Average high temperature: 16℃ (62℉)
- Average low temperature: 10℃ (50℉)
- Average humidity: 70%
- Average sunny days: 24 days
- Average rainfall: 21mm (1") over 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in November, make sure you pack a warm jacket or coat.
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San Francisco in December
- Average temperature: 10℃ (50℉)
- Average high temperature: 13℃ (55℉)
- Average low temperature: 8℃ (46℉)
- Average humidity: 72%
- Average sunny days: 22 days
- Average rainfall: 26mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to San Francisco in December, make sure you pack a warm jacket or coat.
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