Last updated: August 23, 2025
In Olonne-sur-Mer, France, the average temperature in May hovers around 15°C (59°F). Expect a minimum of 6°C (44°F) and a maximum of 26°C (80°F), creating a delightful range for outdoor activities. Be prepared for some rain, as the region experiences 58 mm (2.3 in) of precipitation over approximately 10 days. With an average humidity of 81%, it’s the perfect time to enjoy the lush scenery of this stunning locale!
In May in Olonne-sur-Mer, the average temperature is 15°C (59°F). Maximums can reach 26°C (80°F), while minimums can dip as low as 6°C (44°F). This temperature range makes Olonne-sur-Mer an ideal destination for travelers looking to enjoy mild weather and comfortable outdoor activities.
In Olonne-sur-Mer in May, the total precipitation amount is 58 mm (2.3 in), measured over a span of 10 days.
In Olonne-sur-Mer in May humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.
In Olonne-sur-Mer 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 Olonne-sur-Mer.
UV Risk Categories
Weather in Olonne-sur-Mer varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Olonne-sur-Mer, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (46°F) | 71 mm (2.8 inches) | 88% | low |
| February Weather | 9°C (48°F) | 78 mm (3.1 inches) | 87% | moderate |
| March Weather | 10°C (50°F) | 76 mm (3.0 inches) | 84% | moderate |
| April Weather | 12°C (54°F) | 35 mm (1.4 inches) | 83% | high |
| May Weather | 15°C (59°F) | 58 mm (2.3 inches) | 81% | very high |
| June Weather | 18°C (65°F) | 68 mm (2.7 inches) | 75% | very high |
| July Weather | 20°C (69°F) | 30 mm (1.2 inches) | 65% | very high |
| August Weather | 20°C (68°F) | 37 mm (1.5 inches) | 67% | very high |
| September Weather | 18°C (65°F) | 46 mm (1.8 inches) | 75% | high |
| October Weather | 15°C (59°F) | 87 mm (3.4 inches) | 85% | moderate |
| November Weather | 11°C (52°F) | 106 mm (4.2 inches) | 88% | moderate |
| December Weather | 10°C (50°F) | 140 mm (5.5 inches) | 90% | low |