San Francisco, United States skyline

San Francisco Weather in March

Typical March weather in San Francisco, United States, based on 2006–2025 climate averages.

In March, San Francisco averages a high of 15.2°C (59.4°F) and a low of 8.5°C (47.3°F), with about 10 rainy days (83 mm of rain) and 9.6 hours of sunshine a day.

Avg high

15.2°C (59.4°F)

Avg low

8.5°C (47.3°F)

Rainfall

83 mm (3.3 in)

Rainy days

10 days

Sunshine

9.6 h / day

Humidity

79%

March vs the rest of the year

Here is how every month in San Francisco stacks up against March — the 4th wettest month for rain.

MonthAvg highvs MarchRainRainy days
January13.8°C (56.8°F)−1.4°C (−2.5°F)96 mm9
February14.6°C (58.3°F)−0.6°C (−1.1°F)87 mm8
March15.2°C (59.4°F)—83 mm10
April16.4°C (61.5°F)+1.2°C (+2.2°F)34 mm4
May18°C (64.4°F)+2.8°C (+5°F)14 mm2
June19.9°C (67.8°F)+4.7°C (+8.5°F)3 mm0
July20.1°C (68.2°F)+4.9°C (+8.8°F)1 mm0
August20.8°C (69.4°F)+5.6°C (+10.1°F)0 mm0
September21.8°C (71.2°F)+6.6°C (+11.9°F)3 mm1
October20.6°C (69.1°F)+5.4°C (+9.7°F)28 mm3
November16.6°C (61.9°F)+1.4°C (+2.5°F)53 mm6
December13.4°C (56.1°F)−1.8°C (−3.2°F)106 mm10

What March feels like in San Francisco

March is early spring in San Francisco. Daytime feels cool and fresh rather than cold. There is little difference between day and night: nights are cool, and evenings feel much like the afternoon. Damp air makes the cold feel rawer than the numbers alone suggest.

Rain in San Francisco in March

Expect a mix of dry and wet days, with rain about one day in 3. Wet days average about 8.3 mm (0.3 in), enough to soak you without an umbrella. Across the year San Francisco averages about 9.6 mm per rainy day, so March is typical.

Daylight and sunshine in March

Mid-month, San Francisco gets 11 h 53 min of daylight, from sunrise near 7:23 am to sunset near 7:16 pm. Days are getting longer: 1 h 7 min more daylight than in mid-February. Measured sunshine covers about 81% of the daylight — skies are mostly clear.

How March compares to the rest of the year

March is the 4th coolest month of the year in San Francisco. Afternoons run 0.6°C (1.1°F) warmer than in February, with 4 mm less rain. The warm-up continues into April. The next month's average high: 16.4°C (61.5°F).

Who March suits

  • Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
  • Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
  • Beach: less ideal — the sea air is too cool.

Tips for visiting San Francisco in March

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Light Jacket

A light jacket or knit layer is enough for most of the day.

Sunglasses

Plenty of sun, so bring sunglasses and a cap.

Quick questions

How warm is San Francisco in March?

Afternoons average 15.2°C (59.4°F) and nights about 8.5°C (47.3°F) — cool by most people's standards. It is the 4th coolest month of the year.

Does it rain a lot in San Francisco in March?

Quite a lot — 83 mm spread over about 10 days.

What should I wear in San Francisco in March?

Pack rain protection, a light jacket and sunglasses. There is little need to change for the evening.

Is March or April better for visiting San Francisco?

April scores better on our climate ranking (#7 of 12 vs #11), rated Great against Good. April is warmer and has fewer rainy days.

Is March a good time to visit San Francisco?

Good

Good — mild but cool days, some rainy days (about 10), plenty of sunshine (9.6 h a day). Within San Francisco's own year, March ranks #11 of 12 — one of the least comfortable months.

March in other United States cities

Warmer or drier places in March

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in San Francisco weather by month.