Best Time to Visit San Mateo
Best time: Feb, Jan, Mar, Apr.
May is warmest (34.1°C high); Aug is rainiest (523 mm).
San Mateo weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 29.8 | 21.2 | 26 | 6.2 |
| Feb | 30.9 | 21.4 | 15 | 7.3 |
| Mar | 32.6 | 22.4 | 23 | 8.4 |
| Apr | 34 | 23.8 | 40 | 9.3 |
| May | 34.1 | 24.4 | 180 | 8.5 |
| Jun | 32.4 | 24.3 | 326 | 7.7 |
| Jul | 31.4 | 23.9 | 490 | 7.2 |
| Aug | 31 | 23.9 | 523 | 6.8 |
| Sep | 31.2 | 23.7 | 402 | 6.8 |
| Oct | 31.2 | 23.4 | 269 | 6.5 |
| Nov | 30.7 | 22.8 | 160 | 6 |
| Dec | 29.9 | 22 | 102 | 5.8 |
Average high temperature
Best months by activity
Overall: FebJanMarApr
Beaches: FebMarJanApr
Hiking: FebMarJanApr
Sightseeing: FebJanMarApr
San Mateo quick facts
What to pack
Hot months (Apr, May, Jun): light clothes, sunscreen, hat.
Wet months (May, Jun, Jul, Aug, Sep, Oct, Nov, Dec): raincoat and umbrella.
Frequently asked questions
When is the best time to visit San Mateo?
Feb, Jan, Mar, Apr.
What is the rainiest month?
Aug, about 523 mm.
What is the warmest month?
May, with average highs of 34.1°C.
Where to stay
See San Mateo hotels · Book San Mateo tours & activities
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Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.