Last updated: August 27, 2025
The average temperature in San Sebastian de los Reyes, Spain during May hovers around 18°C (65°F), providing a pleasant climate for various activities. Expect minimums as low as 3°C (37°F) and occasional maximums reaching 33°C (92°F). With an average precipitation amount of 25 mm (1.0 in) over about 6 days, it’s wise to keep an umbrella handy. Additionally, the average humidity is around 71%, giving a mildly tropical feel to the atmosphere.
In May in San Sebastian de los Reyes, the average temperature is 18°C (65°F), with maximums that can reach 33°C (92°F) and minimums that can drop to as low as 3°C (37°F). Overall, travelers should be prepared for a range of temperatures, ensuring they pack both warm clothing for the cooler evenings and lighter attire for the hotter days.
In San Sebastian de los Reyes in May, the precipitation amount is 25 mm (1.0 in) spread over 6 days.
In San Sebastian de los Reyes in May humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.
In San Sebastian de los Reyes 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 Sebastian de los Reyes.
UV Risk Categories
Weather in San Sebastian de los Reyes varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Sebastian de los Reyes, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 31 mm (1.2 inches) | 90% | moderate |
| February Weather | 8°C (47°F) | 28 mm (1.1 inches) | 86% | moderate |
| March Weather | 10°C (51°F) | 45 mm (1.8 inches) | 79% | high |
| April Weather | 13°C (55°F) | 70 mm (2.8 inches) | 74% | very high |
| May Weather | 18°C (65°F) | 25 mm (1.0 inches) | 71% | very high |
| June Weather | 23°C (74°F) | 17 mm (0.7 inches) | 63% | extreme |
| July Weather | 27°C (80°F) | 12 mm (0.5 inches) | 59% | extreme |
| August Weather | 26°C (79°F) | 19 mm (0.7 inches) | 58% | very high |
| September Weather | 21°C (70°F) | 34 mm (1.3 inches) | 65% | very high |
| October Weather | 16°C (60°F) | 53 mm (2.1 inches) | 77% | high |
| November Weather | 10°C (49°F) | 54 mm (2.1 inches) | 87% | moderate |
| December Weather | 7°C (45°F) | 40 mm (1.6 inches) | 90% | moderate |