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When is the Best Time to Explore San Francisco?

If you're curious when is the best time of year to travel to San Francisco, you may find this information about seasonal weather useful when you are planning your trip. The warmest months in San Francisco are typically January and December, whereas the coldest months are usually July and June. The months with the most rain are January and February, whereas June and July have the least.

Here's a rundown on how much rain you can expect and what the temperatures are going to be like:

• From January to March, the average daytime temperature is 32°C and at night it is 16°C. Seasonal average rainfall is 405 mm.
• If you visit between April and June, you can expect an average temp of 23°C during the day and 7°C at night. Average rainfall during this season is 168 mm.
• The daytime average temp from July to September is 21°C and the night-time average is 6°C. Average precipitation for this season is 127 mm.
• Between October and December, the average temp during the day is 31°C and 12°C at night. Seasonal average rain is 347 mm.
• The average annual rainfall in San Francisco is 1046 mm.