During the week of 23 June 2025 - 29 June 2025, temperatures averaged at 25 °C (77 °F) during the day and dropped to 17 °C (63 °F) at night. Both the daily and night temperatures in Les Sables-d'Olonne are slightly above the long-term average, which is around 23 °C (73 °F) and 14 °C (57 °F) respectively. The average temperatures observed during different times of day (based on local time) were as below: 7am 18 °C (64 °F), 10am 22 °C (72 °F), 1pm 24 °C (75 °F), 4pm 25 °C (77 °F), 7pm 23 °C (73 °F), 10pm 20 °C (68 °F).

There were 6 days without rain and 1 day with moderate rain during this week. Les Sables-d'Olonne received 16 mm (0.63 in) of precipitation throughout the week, which is above its long-term average of 9 mm (0.35 in). On average, the cloud coverage during daylight hours (from dawn to dusk) was 34 %.

Average speed of wind was 4.4 m/s. West and North-West were the dominant wind direction(s). The air pressure varied between 1010 hpa and 1027 hpa. On average, the air humidity in Les Sables-d'Olonne was 76 %.

During the daytime (from dawn to dusk), there were in average: 9 hours clear skies, 5 hours partially overcast skies, 3 hours overcast skies and 0.5 hours rainy weather. On average, the time of sunrise was 06:15, and the time of sunset was 22:04.

Weather overview

Les Sables-d'Olonne (France) is a place with a mild climate. The day temperatures range from 9 °C (49 °F) in January to 24 °C (76 °F) in August. The highest night temperatures could be experienced in July with 16 °C (60 °F), the lowest in February with 4 °C (39 °F). The highest sea temperatures in Les Sables-d'Olonne are in August with 19 °C (67 °F) and the lowest in February with 10 °C (50 °F). The driest month is July with just 7 days of rain, on the contrary, the month when it rains the most is December with 14 days of rain.

January weather

The minimum of the day temperature is observable, with its value of 9 °C (49 °F) in Les Sables-d'Olonne, while the sea temperature descents similarly to the previous month, its value is 11 °C (51 °F). The rainfall amount starts to descent in January. The wind speed is on its maximum, with its value being 6. The maximum of the humidity is observable, with its value being 88 %. The descent of the night temperature can be observed, its value is 4 °C (39 °F).

February weather

The day temperature rise's start could be observed in Les Sables-d'Olonne, while the minimum of the sea temperature can be noticed, its value is 10 °C (50 °F). The number of rainy days starts to descent, with its value of 11 days, while the rainfall amount descents similarly to the previous month, with its value being 62 mm (2.43 in). The minimum of the night temperature can be noticed. The beginning of the rise of the number of sun hours (without clouds) could be noticed, its value is 4 hours.

March weather

The day temperature continues to rise, with its value being 14 °C (57 °F) in Les Sables-d'Olonne, while the night temperature starts to rise, with its value being 6 °C (42 °F). The rainfall amount descents similarly to the previous month, its value is 54 mm (2.13 in), and the number of rainy days descents similarly to the previous month as well. The rise of the number of sun hours (without clouds) can be observed, the value of this measure is 5 hours.

April weather

The day temperature continues to rise, with its value being 16 °C (61 °F) in Les Sables-d'Olonne, while the sea temperature starts to rise, with its value of 12 °C (53 °F). The rise of the number of sun hours (without clouds) can be observed, with its value of 6 hours. The night temperature continues to rise, the value of this measure is 7 °C (45 °F).

May weather

The day temperature continues to rise in Les Sables-d'Olonne, and the sea temperature rises similarly to the previous month as well, with its value being 14 °C (58 °F). The rise of the night temperature can be observed, with its value of 11 °C (51 °F). The number of sun hours (without clouds) continues to rise, the value of this measure is 7 hours. The number of rainy days descent's start could be observed, with its value of 10 days.

June weather

The day temperature rises similarly to the previous month, with its value of 23 °C (73 °F) in Les Sables-d'Olonne, and the sea temperature rises similarly to the previous month as well, with its value of 17 °C (63 °F). The descent of the number of rainy days can be observed, the value of this measure is 8 days, while the rainfall amount descent's start could be observed. The night temperature continues to rise, with its value being 14 °C (57 °F). The rise of the number of sun hours (without clouds) can be observed, its value is 8 hours.

July weather

The tourist season slowly starts in Les Sables-d'Olonne. The day temperature rises similarly to the previous month, with its value of 24 °C (75 °F), and the sea temperature continues to rise as well, the value of this measure is 19 °C (66 °F). The minimum of the number of rainy days can be noticed in July. The number of sun hours (without clouds) reaches its maximum, the value of this measure is 9 hours. The maximum of the night temperature can be noticed, its value is 16 °C (60 °F).

August weather

The maximum of the day temperature is observable, with its value being 24 °C (76 °F) in Les Sables-d'Olonne, and the sea temperature is on its maximum as well in August. The tourist season is taking place this month. The rainfall amount is on its minimum, the value of this measure is 36 mm (1.42 in). The number of sun hours (without clouds) descent's start could be observed, its value is 8 hours. The minimum of the wind speed can be noticed in August.

September weather

The day temperature descent's start could be observed, the value of this measure is 22 °C (71 °F) in Les Sables-d'Olonne, and the sea temperature starts to descent too, with its value being 18 °C (65 °F). The beginning of the rise of the number of rainy days could be noticed, with its value of 9 days, and the beginning of the rise of the rainfall amount could be noticed as well in September. The beginning of the descent of the night temperature could be noticed. The number of sun hours (without clouds) descents similarly to the previous month, its value is 7 hours.

October weather

The descent of the day temperature can be observed, with its value being 18 °C (65 °F) in Les Sables-d'Olonne, and the descent of the sea temperature can be observed as well, the value of this measure is 16 °C (62 °F). The number of rainy days continues to rise, its value is 12 days, and the rainfall amount continues to rise too. The night temperature descents similarly to the previous month, with its value being 11 °C (52 °F). The number of sun hours (without clouds) continues to descent, its value is 5 hours.

November weather

The sea temperature continues to descent, with its value of 14 °C (58 °F) in Les Sables-d'Olonne, and the day temperature continues to descent as well, the value of this measure is 13 °C (55 °F). The rise of the number of rainy days can be observed, the value of this measure is 13 days, while the maximum of the rainfall amount is observable, its value is 91 mm (3.59 in). The night temperature continues to descent. The descent of the number of sun hours (without clouds) can be observed, with its value being 3 hours.

December weather

The sea temperature descents similarly to the previous month, with its value being 12 °C (54 °F) in Les Sables-d'Olonne, and the day temperature continues to descent as well, its value is 10 °C (49 °F). The maximum of the number of rainy days can be noticed in this month. The number of sun hours (without clouds) reaches its minimum, with its value being 2 hours. The night temperature continues to descent, with its value of 5 °C (40 °F). The day length reaches its minimum, the value of this measure is 8 hours.

What is the average number of rainy days in May in Les Sables-d'Olonne?

There are 10 days, which are rainy in Les Sables-d'Olonne in May, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.3 days of the week, or in general - 33 % days.

What is the sea temperature in Les Sables-d'Olonne in June?

The sea will reach 17 °C (63 °F) in June in Les Sables-d'Olonne. At this sea temperature, swimming probably won't be the best experience. You probably won't like to stay in water for a long time. On the other hand, there are a minority of people who seek these conditions.

What is the temperature in Les Sables-d'Olonne during the day in July?

The average daily temperature in July in Les Sables-d'Olonne is 24 °C (75 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.

Is it hot in Les Sables-d'Olonne in August?

In Les Sables-d'Olonne in August, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

Is there a wet season in September in Les Sables-d'Olonne?

No, there is no wet season in September in Les Sables-d'Olonne - you can expect 9 days of rain during the month.