+37.5630° · -122.3255° · ELEV 0m
San Mateo
United States · California
Monthly weather averages for San Mateo, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
September → JanuaryClimate Overview
San Mateo has a Mediterranean climate. The warmest month is September (24°C average high) and the coolest is December (14°C).
№ 02
507 mm / yearRainfall by Month
San Mateo sees 507 mm of rain a year. The wettest month is December (123 mm); the driest is August (0 mm).
№ 03
May–OctoberBest Time to Visit
May–October
11°C – 24°C · 12.2h sun
The best time to visit San Mateo is May–October, when temperatures average 11°C–24°C with 12.2 sunshine hours per day.
Some visitors prefer November–April for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 14.4°C | 7.2°C | 96 mm | 7.4 h | 07:22 | 17:14 |
|---|---|---|---|---|---|---|
| February | 15.2°C | 7.8°C | 77 mm | 8.9 h | 06:58 | 17:48 |
| March | 16.0°C | 8.6°C | 85 mm | 9.5 h | 07:20 | 19:16 |
| April | 17.7°C | 9.7°C | 30 mm | 11.3 h | 06:34 | 19:44 |
| May | 19.5°C | 11.2°C | 15 mm | 12.7 h | 06:00 | 20:11 |
| June | 22.4°C | 12.9°C | 1 mm | 13.3 h | 05:47 | 20:32 |
| July | 22.9°C | 13.9°C | 1 mm | 13.3 h | 05:59 | 20:30 |
| August | 23.8°C | 14.8°C | 0 mm | 12.5 h | 06:25 | 20:02 |
| September | 24.1°C | 14.8°C | 5 mm | 11.5 h | 06:51 | 19:17 |
| October | 22.3°C | 13.3°C | 28 mm | 9.9 h | 07:17 | 18:32 |
| November | 17.0°C | 10.2°C | 46 mm | 8.6 h | 06:49 | 16:58 |
| December | 13.6°C | 7.9°C | 123 mm | 6.9 h | 07:17 | 16:52 |