San Francisco Weather in March

March in San Francisco averages 17°C (63°F) during the day and 9°C (48°F) at night. Quite a bit of rainfall is typical this month, with around 85 mm (3.3 in) on average. An umbrella is a good idea.

Rainfall in San Francisco in March

Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 85 mm (3.3 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in San Francisco in March

In March, expect moderate temperatures in San Francisco, with highs of 17°C (63°F) and lows of 9°C (48°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in San Francisco in March

The month enjoys around 270 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in San Francisco in March

Wind speeds average 5 m/s (10 knots) during March. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in March

At 12°C (54°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for San Francisco.