Last updated: August 23, 2025
In May, the average temperature in Saint-Sebastien, France is a pleasant 15°C (59°F). Expect the minimum to dip to 1°C (34°F) and the maximum to rise to a warm 32°C (89°F). During this month, precipitation totals around 86 mm (3.4 in) across about 14 days, contributing to an average humidity of 83%.
In May in Saint-Sebastien, the average temperature is 15°C (59°F). Maximums can reach 32°C (89°F) and minimums can be as low as 1°C (34°F). This variety in temperature makes it essential to pack layers when traveling during this time.
In Saint-Sebastien in May, the precipitation amount is 86 mm (3.4 in) over the course of 14 days.
In Saint-Sebastien in May humidity is 83%. With an average temperature of 15°C (59°F), this humidity feels like a cozy, damp embrace that can be quite stifling for traveling, making even short walks feel more exhausting than they should, and prompting a need for frequent breaks in shaded or air-conditioned areas.
In Saint-Sebastien in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Saint-Sebastien.
UV Risk Categories
Weather in Saint-Sebastien varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Saint-Sebastien, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 71 mm (2.8 inches) | 90% | low |
| February Weather | 7°C (45°F) | 70 mm (2.8 inches) | 88% | moderate |
| March Weather | 9°C (48°F) | 78 mm (3.1 inches) | 85% | moderate |
| April Weather | 12°C (53°F) | 59 mm (2.3 inches) | 83% | high |
| May Weather | 15°C (59°F) | 86 mm (3.4 inches) | 83% | very high |
| June Weather | 19°C (67°F) | 76 mm (3.0 inches) | 79% | very high |
| July Weather | 21°C (71°F) | 44 mm (1.7 inches) | 71% | very high |
| August Weather | 21°C (70°F) | 36 mm (1.4 inches) | 68% | very high |
| September Weather | 17°C (64°F) | 52 mm (2.0 inches) | 76% | high |
| October Weather | 13°C (56°F) | 72 mm (2.8 inches) | 87% | moderate |
| November Weather | 8°C (47°F) | 70 mm (2.7 inches) | 91% | moderate |
| December Weather | 7°C (44°F) | 118 mm (4.6 inches) | 93% | low |