Santa Rosa
December
Weather in Santa Rosa for December 2025
Your guide to Santa Rosa weather in December - trends and predictions
In general, the average temperature in Santa Rosa at the beginning of December is 29.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 27.7 °C by the end of December.
Santa Rosa in December brings notable rainfall, with an average of 20 rainy days and a total precipitation of 208 mm.
Temperatures
Rain 🌧️
11
Dry days
20
Rainy days
0
Snow days
28°/24°
Temperatures
19 km/h
Avg max wind
80 %
Avg humidity
Santa Rosa Weather December
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Temperatures trend during December in Santa Rosa
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December weather in Santa Rosa day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Moderate or heavy rain shower | 26° /23° | 50.9 mm | 6 | |
| 2 Dec. |  Heavy rain at times | 29° /23° | 15.4 mm | 6 | |
| 3 Dec. | Moderate or heavy rain shower | 29° /25° | 12.7 mm | 6 | |
| 4 Dec. |  Patchy rain possible | 30° /24° | 0.6 mm | 7 | |
| 5 Dec. |  Partly cloudy | 30° /24° | 0 mm | 8 | |
| 6 Dec. | Patchy rain possible | 30° /24° | 0.3 mm | 7 | |
| 7 Dec. | Patchy rain possible | 30° /24° | 2 mm | 7 | |
| 8 Dec. | Patchy rain possible | 30° /25° | 0.1 mm | 7 | |
| 9 Dec. | Moderate rain at times | 27° /25° | 3.2 mm | 6 | |
| 10 Dec. | Moderate or heavy rain shower | 26° /25° | 14.9 mm | 6 | |
| 11 Dec. | Patchy rain possible | 29° /25° | 6.3 mm | 6 | |
| 12 Dec. | Moderate or heavy rain shower | 28° /25° | 1.9 mm | 6 | |
| 13 Dec. | Patchy rain possible | 29° /25° | 0.1 mm | 6 | |
| 14 Dec. |  Cloudy | 28° /24° | 0 mm | 6 | |
| 15 Dec. |  Overcast | 28° /24° | 0 mm | 6 | |
| 16 Dec. | Patchy rain possible | 27° /24° | 0.1 mm | 6 | |
| 17 Dec. | Patchy rain possible | 27° /24° | 2.4 mm | 6 | |
| 18 Dec. | Patchy rain possible | 27° /24° | 2.8 mm | 6 | |
| 19 Dec. | Overcast | 28° /24° | 0 mm | 6 | |
| 20 Dec. | Overcast | 28° /23° | 0 mm | 6 | |
| 21 Dec. | Moderate or heavy rain shower | 27° /25° | 13.5 mm | 6 | |
| 22 Dec. | Patchy rain possible | 27° /25° | 0.1 mm | 6 | |
| 23 Dec. | Patchy rain possible | 27° /24° | 0.3 mm | 6 | |
| 24 Dec. | Moderate or heavy rain shower | 28° /25° | 22.2 mm | 6 | |
| 25 Dec. | Moderate or heavy rain shower | 25° /24° | 42.6 mm | 6 | |
| 26 Dec. | Patchy rain possible | 29° /24° | 0.2 mm | 6 | |
| 27 Dec. | Patchy rain possible | 29° /23° | 2.1 mm | 6 | |
| 28 Dec. | Heavy rain at times | 27° /24° | 4.3 mm | 6 | |
| 29 Dec. | Moderate rain at times | 27° /24° | 3.2 mm | 6 | |
| 30 Dec. | Patchy rain possible | 28° /24° | 5.7 mm | 6 | |
| 31 Dec. | Patchy rain possible | 29° /23° | 0.2 mm | 6 | |
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Important Notice
Our weather forecast for Santa Rosa in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Santa Rosa forecast closer to your planned date for the most up-to-date weather information.
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Santa Rosa in December - FAQ
What are the expected maximum and minimum temperatures in Santa Rosa during December?
During December, expect a variety of temperatures with highs around 28° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Santa Rosa during December?
Significant rainfall exceeding 208 mm is expected in Santa Rosa during December, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Santa Rosa during December?
The average wind speed in Santa Rosa during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Santa Rosa
Explore the daily rainfall trends and prepare for Santa Rosas December weather 💧
UV exposure in Santa Rosa during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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