Weather in San Francisco
San Francisco is on a peninsula on the northwest coast of California. The city has a mild climate with cool, wet winters and warm, dry summers.
Summer is the best time to go to San Francisco for the highest temperatures and plenty of warm sunshine. The average temperature is 23°C, which is perfect for exploring the city because it’s warm without being overly hot or uncomfortable.
You can look forward to 12 hours of sunshine per day in the summer, which increases to 14 hours in July. Autumn has slightly less sunshine with 11 hours per day that decreases to just seven hours in December.
San Francisco can get quite foggy at times due to low pressure created by the rise of hot air inland and winds blowing in from the North Pacific.
Winter is the wet season, which means you can expect heavy rain showers from November to February. The average monthly rainfall is around 97mm. If you want to avoid the rain, the best time to visit San Francisco is towards the end of spring. There’s just 18mm of rainfall over four days per month and you’ll enjoy highs of 17°C.