+34.1083° · -117.2898° · ELEV 0m
San Bernardino
United States · California
Monthly weather averages for San Bernardino, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → JanuaryClimate Overview
San Bernardino has a Mediterranean climate. The warmest month is August (35°C average high) and the coolest is December (18°C).
№ 02
303 mm / yearRainfall by Month
San Bernardino sees 303 mm of rain a year. The wettest month is January (65 mm); the driest is June (1 mm).
№ 03
April–MayBest Time to Visit
April–May
9°C – 26°C · 12.1h sun
The best time to visit San Bernardino is April–May, when temperatures average 9°C–26°C with 12.1 sunshine hours per day.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 18.2°C | 6.0°C | 65 mm | 8.4 h | 06:54 | 17:02 |
|---|---|---|---|---|---|---|
| February | 19.3°C | 6.0°C | 46 mm | 9.5 h | 06:34 | 17:32 |
| March | 20.7°C | 7.4°C | 50 mm | 10.2 h | 06:59 | 18:56 |
| April | 24.3°C | 9.4°C | 14 mm | 11.7 h | 06:17 | 19:20 |
| May | 25.7°C | 11.0°C | 10 mm | 12.6 h | 05:47 | 19:43 |
| June | 31.4°C | 14.7°C | 1 mm | 13.5 h | 05:37 | 20:02 |
| July | 34.4°C | 18.3°C | 5 mm | 13.3 h | 05:48 | 20:01 |
| August | 34.9°C | 19.0°C | 10 mm | 12.6 h | 06:10 | 19:36 |
| September | 32.6°C | 17.6°C | 7 mm | 11.5 h | 06:32 | 18:56 |
| October | 28.6°C | 14.0°C | 8 mm | 10.5 h | 06:54 | 18:15 |
| November | 23.1°C | 9.4°C | 22 mm | 9.3 h | 06:22 | 16:45 |
| December | 17.9°C | 6.1°C | 65 mm | 8.1 h | 06:47 | 16:41 |
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Temperature, rainfall and sunshine, month by month.