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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 explore 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 May and April, whereas the coldest months are usually February and January. The months with the most rain are July and September, whereas March and February 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 30°C and at night it is 23°C. Seasonal average rainfall is 260 mm.
• If you visit between April and June, you can expect an average temp of 32°C during the day and 25°C at night. Average rainfall during this season is 511 mm.
• The daytime average temp from July to September is 30°C and the night-time average is 26°C. Average precipitation for this season is 932 mm.
• Between October and December, the average temp during the day is 30°C and 25°C at night. Seasonal average rain is 633 mm.
• Average annual rainfall in San Francisco is 2335 mm.