The temperatures in San Mateo in May are usually low and can range between 51°F and 64°F.
The wather in San Mateo in May can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in San Mateo in May 2025.
If you’re planning to visit San Mateo in the near future, we highly recommend that you review the 14 day weather forecast for San Mateo before you arrive.
Temperatures
64° / 51°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
0.59
in
Sun Hours
9.2
Hrs
