San José
December
Weather in San José for December 2025
Your guide to San José weather in December - trends and predictions
In general, the average temperature in San José at the beginning of December is 24 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 24.3 °C by the end of December.
San José experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 81.8 mm.
Temperatures
Rain 🌧️
9
Dry days
22
Rainy days
0
Snow days
24°/12°
Temperatures
9 km/h
Avg max wind
84 %
Avg humidity
San José in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  23° | 2 23° | 3 23° | 4 24° | 5 26° | 6 25° | 7  24° |
| 8 25° | 9 25° | 10 24° | 11 24° | 12 24° | 13 25° | 14 25° |
| 15 24° | 16 23° | 17 26° | 18 23° | 19 21° | 20 21° | 21 24° |
| 22 23° | 23  22° | 24 23° | 25 24° | 26 23° | 27 25° | 28 25° |
| 29 25° | 30 23° | 31 25° |
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Temperatures trend during December in San José
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Patchy rain possible | 23° /12° | 12.3 mm | 5 | |
| 2 Dec. | Patchy rain possible | 23° /12° | 16.7 mm | 5 | |
| 3 Dec. | Light rain shower | 23° /13° | 2.7 mm | 5 | |
| 4 Dec. | Patchy rain possible | 24° /12° | 5.1 mm | 6 | |
| 5 Dec. | Patchy rain possible | 26° /12° | 0.3 mm | 6 | |
| 6 Dec. | Patchy rain possible | 25° /11° | 2 mm | 6 | |
| 7 Dec. | Partly cloudy | 24° /11° | 0.2 mm | 6 | |
| 8 Dec. | Patchy rain possible | 25° /11° | 0.2 mm | 6 | |
| 9 Dec. | Patchy rain possible | 25° /12° | 1.2 mm | 6 | |
| 10 Dec. | Light rain shower | 24° /13° | 3.1 mm | 5 | |
| 11 Dec. | Light rain shower | 24° /13° | 2.7 mm | 5 | |
| 12 Dec. | Patchy rain possible | 24° /13° | 1.3 mm | 5 | |
| 13 Dec. | Patchy rain possible | 25° /12° | 0.6 mm | 6 | |
| 14 Dec. | Patchy rain possible | 25° /12° | 0.7 mm | 6 | |
| 15 Dec. | Light rain shower | 24° /12° | 1.2 mm | 6 | |
| 16 Dec. | Light rain shower | 23° /12° | 1.5 mm | 5 | |
| 17 Dec. | Light rain shower | 26° /11° | 1.1 mm | 6 | |
| 18 Dec. | Light rain shower | 23° /11° | 2 mm | 6 | |
| 19 Dec. | Light rain shower | 21° /12° | 4.3 mm | 5 | |
| 20 Dec. | Patchy rain possible | 21° /11° | 1.8 mm | 5 | |
| 21 Dec. | Patchy rain possible | 24° /10° | 2.1 mm | 5 | |
| 22 Dec. | Patchy rain possible | 23° /13° | 1.9 mm | 5 | |
| 23 Dec. | Cloudy | 22° /13° | 8.6 mm | 5 | |
| 24 Dec. | Cloudy | 23° /12° | 1.8 mm | 5 | |
| 25 Dec. | Light rain shower | 24° /12° | 2.4 mm | 6 | |
| 26 Dec. | Cloudy | 23° /13° | 2.5 mm | 5 | |
| 27 Dec. | Patchy rain possible | 25° /14° | 2.2 mm | 6 | |
| 28 Dec. | Light rain shower | 25° /13° | 2.5 mm | 6 | |
| 29 Dec. | Patchy rain possible | 25° /13° | 7.2 mm | 6 | |
| 30 Dec. | Patchy rain possible | 23° /13° | 2.5 mm | 5 | |
| 31 Dec. | Cloudy | 25° /11° | 1.5 mm | 6 | |
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Important Notice
Our weather forecast for San José 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 San José forecast closer to your planned date for the most up-to-date weather information.
San José in December - FAQ
What are the expected maximum and minimum temperatures in San José during December?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San José during December?
Moderate rainfall is anticipated in San José during December, with a total of 81.8 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San José during December?
The average wind speed in San José during December is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in San José
Explore the daily rainfall trends and prepare for San Josés December weather 💧
UV exposure in San José during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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