San Mateo Weather in April

April in San Mateo typically sees daytime highs of 19°C (66°F) and nighttime lows of 9°C (48°F). Expect some rainfall during the month.

Rainfall in San Mateo in April

You can expect rain on around 7 days based on historical patterns, with 40 mm (1.6 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in San Mateo in April

April in San Mateo brings typical temperatures with highs around 19°C (66°F) and lows of 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in San Mateo in April

The city usually sees around 310 hours of sunlight, indicating many sunny days , a great month for sightseeing.

Wind Speed in San Mateo 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

With water at 13°C (55°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

For San Mateo itself, May, June, July, August, September and October generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.