May
Weather in San José for May 2026
Your guide to San José weather in May - trends and predictions
In general, the average temperature in San José at the beginning of May is 27.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.3 °C by the end of May.
San José experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 315.4 mm.
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Temperatures
Rain 🌧️
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0
Dry days
31
Rainy days
0
Snow days
26°/15°
Temperatures
6 km/h
Avg max wind
84 %
Avg humidity
San José Weather May
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Temperatures trend during May in San José
See the weather trend as well as the moving average line
May weather in San José day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Light rain shower | 27° /14° | 4.9 mm | 6 | |
| May 2 |  Moderate or heavy rain shower | 27° /15° | 8.5 mm | 6 | |
| May 3 | Light rain shower | 28° /15° | 6 mm | 6 | |
| May 4 | Light rain shower | 28° /15° | 4.2 mm | 6 | |
| May 5 |  Cloudy | 28° /15° | 2.5 mm | 6 | |
| May 6 | Light rain shower | 28° /14° | 3.4 mm | 6 | |
| May 7 | Light rain shower | 27° /15° | 6.5 mm | 6 | |
| May 8 | Light rain shower | 27° /14° | 7.8 mm | 6 | |
| May 9 | Light rain shower | 27° /13° | 5 mm | 6 | |
| May 10 | Patchy rain possible | 28° /14° | 19.6 mm | 6 | |
| May 11 | Light rain shower | 27° /15° | 7.6 mm | 6 | |
| May 12 | Moderate or heavy rain shower | 27° /16° | 12.9 mm | 6 | |
| May 13 | Light rain shower | 26° /16° | 11.7 mm | 6 | |
| May 14 | Light rain shower | 26° /15° | 8.5 mm | 6 | |
| May 15 | Moderate or heavy rain shower | 26° /14° | 9.5 mm | 6 | |
| May 16 | Moderate or heavy rain shower | 24° /15° | 25.7 mm | 5 | |
| May 17 |  Heavy rain at times | 25° /16° | 12.5 mm | 5 | |
| May 18 | Light rain shower | 27° /15° | 4.2 mm | 6 | |
| May 19 | Light rain shower | 26° /15° | 7 mm | 6 | |
| May 20 | Moderate or heavy rain shower | 26° /15° | 12.3 mm | 5 | |
| May 21 | Light rain shower | 27° /15° | 6.5 mm | 6 | |
| May 22 | Light rain shower | 27° /15° | 7.2 mm | 6 | |
| May 23 | Patchy rain possible | 27° /15° | 10.8 mm | 6 | |
| May 24 | Light rain shower | 27° /14° | 7.7 mm | 6 | |
| May 25 | Light rain shower | 26° /15° | 7.5 mm | 6 | |
| May 26 | Light rain shower | 25° /15° | 10.2 mm | 6 | |
| May 27 | Light rain shower | 26° /14° | 5.3 mm | 6 | |
| May 28 | Light rain shower | 26° /13° | 10.1 mm | 6 | |
| May 29 | Moderate or heavy rain shower | 26° /15° | 12.8 mm | 6 | |
| May 30 | Moderate or heavy rain shower | 24° /14° | 32.6 mm | 5 | |
| May 31 | Light rain shower | 24° /14° | 24.4 mm | 5 | |
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Important Notice
Our weather forecast for San José in May 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 May - FAQ
What are the expected maximum and minimum temperatures in San José during May?
During May, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in San José during May?
Significant rainfall exceeding 315.4 mm is expected in San José during May, 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 May?
The average wind speed in San José during May is 6 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in San José
Explore the daily rainfall trends and prepare for San Josés May weather 💧
UV exposure in San José during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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