+38.4405° · -122.7144° · ELEV 0m
Santa Rosa
United States · California
Monthly weather averages for Santa Rosa, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
July → JanuaryClimate Overview
Santa Rosa has a Mediterranean climate. The warmest month is July (30°C average high) and the coolest is December (15°C).
№ 02
697 mm / yearRainfall by Month
Santa Rosa sees 697 mm of rain a year. The wettest month is December (147 mm); the driest is August (0 mm).
№ 03
May–OctoberBest Time to Visit
May–October
11°C – 30°C · 12.2h sun
The best time to visit Santa Rosa is May–October, when temperatures average 11°C–30°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 | 15.5°C | 5.4°C | 143 mm | 6.8 h | 07:26 | 17:13 |
|---|---|---|---|---|---|---|
| February | 16.7°C | 5.5°C | 126 mm | 8.5 h | 07:01 | 17:48 |
| March | 17.5°C | 6.5°C | 108 mm | 9.1 h | 07:22 | 19:17 |
| April | 20.8°C | 8.2°C | 40 mm | 11.2 h | 06:34 | 19:46 |
| May | 23.9°C | 10.5°C | 20 mm | 12.7 h | 05:59 | 20:15 |
| June | 28.3°C | 13.1°C | 2 mm | 13.4 h | 05:46 | 20:36 |
| July | 29.6°C | 13.7°C | 1 mm | 13.5 h | 05:58 | 20:34 |
| August | 29.6°C | 14.3°C | 0 mm | 12.5 h | 06:25 | 20:05 |
| September | 28.8°C | 13.8°C | 7 mm | 11.4 h | 06:52 | 19:19 |
| October | 25.3°C | 11.5°C | 43 mm | 9.5 h | 07:19 | 18:33 |
| November | 18.7°C | 7.3°C | 60 mm | 8.3 h | 06:52 | 16:58 |
| December | 14.5°C | 5.5°C | 147 mm | 6.1 h | 07:21 | 16:51 |