August
Weather in San José for August 2025
Your guide to San José weather in August - trends and predictions
Until now, August 2025 in San José is slightly cooler than the historical average by -0.8 °C.
The forecast for the next days in San José predicts temperatures to be around 25 °C, close to the historical average.
In general, the average temperature in San José at the beginning of August is 24.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 25.6 °C by the end of August.
San José experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 595.2 mm.
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Temperatures
Rain 🌧️
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0
Dry days
31
Rainy days
0
Snow days
24°/14°
Temperatures
6 km/h
Avg max wind
89 %
Avg humidity
San José Weather August
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Temperatures trend during August in San José
See the weather trend as well as the moving average line
August weather in San José day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Moderate or heavy rain shower | 24° /13° | 32 mm | 5 | |
| Aug. 2 | Moderate or heavy rain shower | 25° /13° | 16.5 mm | 6 | |
| Aug. 3 |  Heavy rain at times | 24° /13° | 13.2 mm | 5 | |
| Aug. 4 |  Light rain shower | 25° /13° | 8.1 mm | 6 | |
| Aug. 5 |  Overcast | 25° /13° | 9.4 mm | 6 | |
| Aug. 6 | Moderate or heavy rain shower | 24° /13° | 10.5 mm | 5 | |
| Aug. 7 | Moderate or heavy rain shower | 22° /14° | 8.2 mm | 5 | |
| Aug. 8 | Moderate or heavy rain shower | 25° /13° | 38.3 mm | 5 | |
| Aug. 9 | Light rain shower | 25° /13° | 10.8 mm | 5 | |
| Aug. 10 | Moderate or heavy rain shower | 25° /14° | 3 mm | 6 | |
| Aug. 11 |  Moderate rain | 24° /14° | 13.7 mm | 2.1 | |
| Aug. 12 |  Heavy rain | 25° /14° | 24.6 mm | 2.1 | |
| Aug. 13 | Moderate rain | 25° /15° | 12.8 mm | 2.6 | |
| Aug. 14 | Moderate rain | 23° /14° | 19.8 mm | 0 | |
| Aug. 15 | Moderate rain | 24° /14° | 6 mm | 4 | |
| Aug. 16 | Patchy rain possible | 25° /13° | 0.7 mm | 4 | |
| Aug. 17 | Patchy rain possible | 26° /12° | 1 mm | 4 | |
| Aug. 18 | Moderate rain | 23° /15° | 10.5 mm | 4 | |
| Aug. 19 | Patchy rain possible | 24° /15° | 2.6 mm | 4 | |
| Aug. 20 | Patchy rain possible | 26° /15° | 1.4 mm | 4 | |
| Aug. 21 | Patchy rain possible | 24° /15° | 1.9 mm | 4 | |
| Aug. 22 | Patchy rain possible | 26° /14° | 1.6 mm | 4 | |
| Aug. 23 | Moderate rain | 24° /15° | 6 mm | 4 | |
| Aug. 24 | Moderate or heavy rain shower | 24° /12° | 25 mm | 6 | |
| Aug. 25 | Torrential rain shower | 26° /12° | 16.4 mm | 6 | |
| Aug. 26 | Torrential rain shower | 24° /12° | 21 mm | 6 | |
| Aug. 27 | Torrential rain shower | 25° /13° | 27 mm | 6 | |
| Aug. 28 | Torrential rain shower | 26° /13° | 40.9 mm | 6 | |
| Aug. 29 |  Patchy light rain with thunder | 26° /13° | 11.2 mm | 6 | |
| Aug. 30 | Patchy light rain with thunder | 26° /13° | 9.3 mm | 6 | |
| Aug. 31 | Patchy light rain with thunder | 26° /13° | 30.9 mm | 6 | |
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Important Notice
Our weather forecast for San José in August 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.
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San José in August - FAQ
What are the expected maximum and minimum temperatures in San José during August?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San José during August?
Significant rainfall exceeding 595.2 mm is expected in San José during August, occurring over more than 31 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in San José during August?
The average wind speed in San José during August is 6 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in San José
Explore the daily rainfall trends and prepare for San Josés August weather 💧
UV exposure in San José during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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