Santa Rosa in December
5.7out of 10
Possible, with caveats
Hot: daytime highs around 32°C. Very wet: about 15 rainy days.
32°CAvg high
21°CAvg low
15Rainy days (218 mm)
13:26 hDaylight
06:31Sunrise · 19:57 Sunset
Why this score
- Hot: daytime highs around 32°C
- Very wet: about 15 rainy days
- Rain varies a lot between years (±4.4 days)
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Rain jacket or compact umbrella
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in December varies a lot between years (±4.4 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 31°C | 21°C | 224 mm | 16 | – | – | 5.6 |
| February | 30°C | 21°C | 232 mm | 16 | – | – | 6.0 |
| March | 28°C | 20°C | 248 mm | 18 | – | – | 6.1 |
| April | 25°C | 17°C | 163 mm | 15 | – | – | 6.7 |
| May | 22°C | 14°C | 80 mm | 12 | – | – | 7.5 |
| June | 20°C | 11°C | 38 mm | 8 | – | – | 7.8 |
| July | 21°C | 9°C | 23 mm | 5 | – | – | 8.2 |
| August | 25°C | 11°C | 16 mm | 4 | – | – | 8.6 |
| September | 28°C | 14°C | 22 mm | 4 | – | – | 8.5 |
| October | 31°C | 18°C | 81 mm | 9 | – | – | 7.4 |
| November | 31°C | 20°C | 126 mm | 12 | – | – | 6.7 |
| December | 32°C | 21°C | 218 mm | 15 | – | – | 5.7 |
Frequently asked questions
How hot is Santa Rosa in December?
Daytime highs average 32°C and nights about 21°C.
When is the best time to visit Santa Rosa?
The best months are August, September, July.