United States · North America
What to Wear in San Francisco
Month-by-month temperatures, rainfall, and clothing recommendations for San Francisco, United States. Find out what to pack for every season.
Warmest month
September
21°C / 70°F
Coolest month
January
14°C / 57°F
Wettest month
December
116 mm
Best months
May, June, July
Monthly climate & clothing guide
| Month | High | Low | Rain | Humidity | Climate |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 8°C / 46°F | 114 mm | moderate | Cool |
| February | 15°C / 59°F | 9°C / 48°F | 111 mm | moderate | Cool |
| March | 16°C / 61°F | 9°C / 48°F | 73 mm | moderate | Cool |
| April | 17°C / 63°F | 10°C / 50°F | 37 mm | moderate | Cool |
| May | 18°C / 64°F | 11°C / 52°F | 18 mm | moderate | Mild |
| June | 19°C / 66°F | 12°C / 54°F | 3 mm | moderate | Mild |
| July | 19°C / 66°F | 12°C / 54°F | 1 mm | moderate | Mild |
| August | 20°C / 68°F | 13°C / 55°F | 1 mm | moderate | Mild |
| September | 21°C / 70°F | 13°C / 55°F | 5 mm | moderate | Mild |
| October | 21°C / 70°F | 12°C / 54°F | 28 mm | moderate | Mild |
| November | 17°C / 63°F | 10°C / 50°F | 74 mm | moderate | Cool |
| December | 14°C / 57°F | 8°C / 46°F | 116 mm | moderate | Cool |
Seasonal clothing guide for San Francisco
Winter (Dec-Feb)
CoolAverage highs 14°C (57°F), lows 8°C (46°F). Total seasonal rainfall: 341 mm.
Jacket weather. A proper 3-layer system with insulation keeps you comfortable during full days outdoors. Mornings and evenings need extra warmth.
Spring (Mar-May)
CoolAverage highs 17°C (63°F), lows 10°C (50°F). Total seasonal rainfall: 128 mm.
Jacket weather. A proper 3-layer system with insulation keeps you comfortable during full days outdoors. Mornings and evenings need extra warmth.
Summer (Jun-Aug)
MildAverage highs 19°C (66°F), lows 12°C (54°F). Total seasonal rainfall: 5 mm.
Spring and fall conditions — comfortable but changeable. A light layering system handles temperature swings between morning, midday, and evening.
Fall (Sep-Nov)
MildAverage highs 20°C (68°F), lows 12°C (54°F). Total seasonal rainfall: 107 mm.
Spring and fall conditions — comfortable but changeable. A light layering system handles temperature swings between morning, midday, and evening.
FAQ
What should I wear when visiting San Francisco?
What to wear in San Francisco depends on the month. The warmest month is September (avg high 21°C / 70°F) and the coldest is January (avg high 14°C / 57°F). Check the month-by-month table above for specific clothing recommendations.
What is the best time to visit San Francisco?
For comfortable weather and easy packing, the best months to visit San Francisco are May, June, July, August, September, October. These months have mild to warm temperatures with manageable rainfall.
Does it rain a lot in San Francisco?
The wettest month in San Francisco is December with an average of 116 mm of rainfall. A packable rain jacket is recommended.
Do I need warm clothes for San Francisco?
Yes. San Francisco's coldest month is January with average highs of 14°C (57°F). You will need a proper layering system with insulation if visiting during the cooler months.
Ready to pack for San Francisco?
Use our interactive tool to compare climates and get layering advice.
Open Climate Calendar