Last updated: August 27, 2025
In May, the average temperature in San Martin del Castanar, Spain is a pleasant 16°C (60°F). Expect some variability, with minimums dipping to 1°C (34°F) and maximums soaring up to 31°C (88°F). Be prepared for occasional rain, as the area experiences about 45 mm (1.8 in) of precipitation over 8 days. With an average humidity of 76%, the atmosphere can feel quite tropical, so dress accordingly!
In May in San Martin del Castanar, the average temperature is 16°C (60°F). Maximums can reach 31°C (88°F), and minimums can be as low as 1°C (34°F). Be prepared for a range of weather conditions and pack accordingly for your travels!
In San Martin del Castanar in May, the precipitation amount is 45 mm (1.8 in) over the course of 8 days.
In San Martin del Castanar in May humidity is 76%. With an average temperature of 16°C (60°F), this humidity feels like a warm embrace, making it somewhat uncomfortable for traveling, as the air can feel heavy and oppressive, potentially leading to fatigue and a constant need for hydration.
In San Martin del Castanar in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in San Martin del Castanar.
UV Risk Categories
Weather in San Martin del Castanar varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Martin del Castanar, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 39 mm (1.5 inches) | 91% | moderate |
| February Weather | 7°C (45°F) | 68 mm (2.7 inches) | 85% | moderate |
| March Weather | 8°C (47°F) | 86 mm (3.4 inches) | 79% | high |
| April Weather | 11°C (52°F) | 94 mm (3.7 inches) | 77% | very high |
| May Weather | 16°C (60°F) | 45 mm (1.8 inches) | 76% | very high |
| June Weather | 20°C (68°F) | 28 mm (1.1 inches) | 64% | extreme |
| July Weather | 23°C (74°F) | 12 mm (0.5 inches) | 54% | extreme |
| August Weather | 23°C (74°F) | 13 mm (0.5 inches) | 52% | very high |
| September Weather | 19°C (67°F) | 43 mm (1.7 inches) | 63% | very high |
| October Weather | 14°C (58°F) | 76 mm (3.0 inches) | 78% | high |
| November Weather | 8°C (47°F) | 89 mm (3.5 inches) | 90% | moderate |
| December Weather | 6°C (44°F) | 87 mm (3.4 inches) | 91% | moderate |