South San Francisco Weather in April

April in South San Francisco typically sees daytime highs of 18°C (64°F) and nighttime lows of 10°C (50°F). Expect some rainfall during the month.

Rainfall in South San Francisco in April

Historically, the month has about 7 days of rain, averaging 46 mm (1.8 in) in total. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in South San Francisco in April

If you're visiting South San Francisco in April, expect highs of 18°C (64°F) and overnight lows around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in South San Francisco in April

The days are predominantly sunny, with an estimated total of around 310 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in South San Francisco in April

Wind speeds average 6 m/s (12 knots) during April. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in April

The water temperature is 13°C (55°F), chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

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 South San Francisco.