Climate and monthly weather forecastNantes, France
Climate and monthly weather forecast
The climate of Nantes
Nantes, located in the far west of France, enjoys a temperate marine west coast climate, also classified as a Cfb climate according to the Köppen climate classification system. This implies that Nantes experiences mild and generally warm and temperate weather conditions. The yearly temperature swings from an average low of 2.9°C (37.2°F) in February to an average high of 24.3°C (75.7°F) in July and August. The relative humidity ranged from 74% in August and September to a high of 86% in January and December.The city sees rainfall throughout the year, with a significant disparity in the amount of rainfall from month to month. The rainfall varies from a low of 21mm (0.83") in September to a high of 66mm (2.6") in December. Consequently, the number of days with rainfall fluctuates each month from a minimum of 8.2 days in September to a maximum of 16.3 days in January. Nantes sees infrequent snowfall, primarily between January and February with a snowfall of 1mm (0.04") to 2mm (0.08").
The length of daylight spans from a minimum of 8.6 hours in December to a maximum of 15.9 hours in June. Meanwhile, sunshine hours diverge from a low of 4.5 hours in January to a high of 10.1 hours in July. A relative variation in the UV index is observed from 2 in the cooler months to 5 in the sunnier months of the year.
The best time to visit Nantes
Given the temperate and enjoyable weather, the period from June to August serves as the best time for tourists to visit Nantes. During this period, average high-temperature measures between 21.6°C (70.9°F) to 24.3°C (75.7°F), offering warm and inviting conditions. Moreover, the city enjoys the maximum length of daylight rising to 15.5 to 15.9 hours in these months, allowing more hours for exploring the city. Relatively lower rainfall is recorded in these months, ranging from 24mm (0.94") to 38mm (1.5"), providing fewer disruptions to outdoor activities.The worst time to visit Nantes
The colder months, particularly January and February, signify the less favorable time to travel to Nantes. The average low temperature in these months drops to 2.9°C (37.2°F) to 3.4°C (38.1°F). In addition, these months also experience increased cloud cover, reduced daylight hours retracing between 8.6 hours to 9 hours, and increased rainfall measuring between 45mm (1.77") to 47mm (1.85").Spring weather in Nantes
The spring season occurs from March to May in Nantes. Average high-temperature during spring spans between 12.3°C (54.1°F) to 18.3°C (64.9°F), whilst the average low-temperature measures between 4.3°C (39.7°F) to 8.9°C (48°F). Rainfall remains constant in spring, registering between 32mm (1.26") to 40mm (1.57") each month. Sunshine hours increase gradually from 6.6 hours in March to 8.7 hours by May, providing abundant daylight for outdoor activities.Summer weather in Nantes
The summer season, occurring from June to August, offers warm weather with the highest temperatures of the year. Average high-temperature ranges from 21.6°C (70.9°F) to 24.3°C (75.7°F). Meanwhile, relative humidity experiences a yearly low of 75% to 74% in these months. Despite minimal rainfall in June and July, August sees a slight increase in rainfall to 25mm (0.98").Autumn weather in Nantes
Fall commences in September and lasts till November. The average high temperatures during this period move from 21.8°C (71.2°F) to 12.7°C (54.9°F), witnessing a sheet of color changes throughout the city. Rainfall increases gradually from 21mm (0.83") in September to 59mm (2.32") by November. However, the city enjoys a good amount of sunshine, receiving 8.1 hours in September, which reduces to 4.6 hours by November.Winter weather in Nantes
The winter season, defining December through February, exhibits chilly weather in Nantes. The average high temperatures decline to the yearly low from 10°C (50°F) to 8.9°C (48°F), and average low temperatures reach down to 3.4°C (38.1°F) to 4.9°C (40.8°F) in this period. Despite the cooler environment, Nantes gets a minimum amount of snowfall. However, the city experiences its highest monthly rainfall of 66mm (2.6") in December, making the city quite damp in this season.Weather in January
Nantes begins the year with relatively cold weather, yet without any extreme conditions. The city experiences a brisk onset of winter, which eases gradually as the month proceeds. Rainfall, albeit lower than the later months, is still present, making the damp conditions palpable. Weather in January »Weather in February
Transitioning from January, February in Nantes brings a slight increase in average high temperature. While rainfall remains moderately steady, the city sees a slight decrease in the number of rainy days. The trend of declining wind speeds continues into this month, giving residents a much-needed break from the biting wind chill. Weather in February »Weather in March
Weather in March sees Nantes transition effectively from winter towards the more comfortable spring season. There is a certain freshness in the air as nature begins to thrust its colors. This period is marked by an increase in daylight hours, enhancing the city’s vibrancy. Weather in March »Weather in April
The advent of April sparks the true onset of spring in Nantes, where the increasing amount of sunshine encourages blossoming flora. The significant rise in temperature is accompanied by moderate rainfall and declining wind speeds - a welcome change from the previously turbulent winds. Weather in April »Weather in May
The manifestation of May shifts the weather of Nantes from spring to the onset of summer. The outdoor conditions become increasingly comfortable, amplifying the aura of the city. Higher temperatures support flourishing vegetation, and an increasing amount of daylight hours consent outdoor activities. Weather in May »Weather in June
The glorious weather in June marks the full arrival of summer in Nantes. The comfortable warmth combined with an increase in sunshine hours makes this period the most favored time of the year. Cumulus clouds frequently hover over the cityscape, but the rainfall occurrence remains infrequent. Weather in June »Weather in July
In July, Nantes experiences the pinnacle of summer, decorated with mild weather and extensive daylight. The city’s skies usually remain clear, bathing the surroundings in abundant sunlight. As this period is considerably dry, residents often opt for outdoor activities and enjoy the warm ambiance. Weather in July »Weather in August
August in Nantes exhibits the last leg of summer heat, accompanied by extended hours of daylight. The weather supports a vibrant outdoor lifestyle, packed with beach visits and evening walks. As the end of the month approaches, there is a noticeable reduction in temperature, signifying the forthcoming change of season. Weather in August »Weather in September
September harbors the transition phase from summer to autumn in Nantes, introducing a slight chill in the air. While the sun still shines brightly during the day, evenings get cooler, as fall steadily makes its presence felt. Weather in September »Weather in October
Nantes in October displays early signs of the incoming winter, as cooler temperatures gradually set in. The earlier vibrant and lush green trees start morphing into shades of autumn and the city prepares for the colder months. Despite the changing weather, rainfall remains relatively constant. Weather in October »Weather in November
Rolling into November, Nantes witnesses a clear intensification of cold weather. Rainfall numbers peak, making the city experience damp and cold conditions. Alongside the increasing chill, wind speeds pick up pace, reducing outdoor comfort levels. Weather in November »Weather in December
December marks the arrival of winter in Nantes, bringing with it cold temperatures and a scarce amount of daylight. The city’s atmosphere orchestrates the festive period beautifully with holiday lights and decorations changing the cityscape. Weather in December »Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With average high temperatures of 8.9°C (48°F) and lows of 3.4°C (38.1°F), January is the coldest month in Nantes.
January and December, with an average relative humidity of 86%, are most humid months in Nantes.
In Nantes, France, during the entire year, the rain falls for 158.5 days and collects up to 472mm (18.58") of precipitation.
January, February, April and November are months with snowfall in Nantes, France.
January is the month with the most snowfall in Nantes. Snow falls for 0.5 days and accumulates 2mm (0.08") of snow.
In Nantes, during the entire year, snow falls for 1.7 days and aggregates up to 5mm (0.2") of snow.
January has the least sunshine of the year in Nantes, with an average of 4.5h of sunshine.
The months with the lowest UV index in Nantes, France, are January, February, November and December, with an average maximum UV index of 2.
In Nantes, snow does not fall in March, May through October and December.
June has the longest days of the year, with an average of 15h and 54min of daylight.
The months with the highest UV index in Nantes, France, are June through August, with an average maximum UV index of 5.
July has the most sunshine of the year, with an average of 10.1h of sunshine.
The highest temperatures are recorded in August, with averages reaching a high of 24.3°C (75.7°F) and a low of 14°C (57.2°F).
The months with the lowest humidity in Nantes are August and September, with an average relative humidity of 74%.
The month with the least rainfall is September, when the rain falls for 8.2 days and typically collects 21mm (0.83") of precipitation.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Nantes, France, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
The month with the most rainfall is December, when the rain falls for 14.5 days and typically aggregates up to 66mm (2.6") of precipitation.
December has the shortest days of the year, with an average of 8h and 36min of daylight.
Average temperature
Nantes, France
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (8.9°C).
The months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure
Nantes, France
- Average pressure in January:
1018.2mbar - Average pressure in February:
1016.9mbar - Average pressure in March:
1016.8mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1017.2mbar - Average pressure in June:
1016.9mbar
- Average pressure in July:
1017.3mbar - Average pressure in August:
1017.3mbar - Average pressure in September:
1018.3mbar - Average pressure in October:
1016.7mbar - Average pressure in November:
1013.5mbar - Average pressure in December:
1019.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed
Nantes, France
- Average wind speed in January:
17.3km/h - Average wind speed in February:
18km/h - Average wind speed in March:
16.5km/h - Average wind speed in April:
13.9km/h - Average wind speed in May:
13.6km/h - Average wind speed in June:
12.9km/h
- Average wind speed in July:
12.5km/h - Average wind speed in August:
11.8km/h - Average wind speed in September:
12.4km/h - Average wind speed in October:
13.7km/h - Average wind speed in November:
16.4km/h - Average wind speed in December:
17.1km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity
Nantes, France
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall
Nantes, France
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days
Nantes, France
- Average rainfall days in January:
16.3 days - Average rainfall days in February:
13.9 days - Average rainfall days in March:
15 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
8.2 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
14.5 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is September (8.2 days).
Average snowfall
Nantes, France
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, May, June, July, August, September, October and December (0mm).
Average snowfall days
Nantes, France
- Average snowfall days in January:
0.5 days - Average snowfall days in February:
0.5 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.2 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Nantes, France
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
6h and 18min - Average sunshine in March:
6h and 36min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
8h and 54min - Average sunshine in September:
8h and 6min - Average sunshine in October:
6h and 48min - Average sunshine in November:
4h and 36min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Nantes, France
- Average sunshine days in January:
12.3 days - Average sunshine days in February:
12.2 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
14 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
15.2 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
20.2 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
11.6 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is November (11.6 days).
Average UV index
Nantes, France
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Nantes, France
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility
Nantes, France
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
