Weatheo

Saint-Nazaire Weather by Month

Average temperatures, rainfall and humidity for Saint-Nazaire, France, month by month, built from OpenWeather’s historical records. Use it to see what a typical Saint-Nazaire month looks like before you travel — then check the live Saint-Nazaire forecast for the days ahead.

Warmest month

July

26°C average high

Coolest month

January

4°C average low

Wettest month

November

58 mm of rain

Driest month

July

14 mm of rain

Average temperature and rainfall in Saint-Nazaire by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January9°C4°C-9°C / 16°C
55 mm
88%14 km/h
February11°C4°C-7°C / 21°C
43 mm
84%15 km/h
March13°C5°C-3°C / 24°C
41 mm
78%14 km/h
April17°C7°C-2°C / 28°C
35 mm
72%13 km/h
May20°C10°C2°C / 35°C
31 mm
74%13 km/h
June24°C14°C7°C / 44°C
30 mm
72%12 km/h
July26°C15°C8°C / 42°C
14 mm
69%12 km/h
August26°C15°C7°C / 41°C
25 mm
72%11 km/h
September23°C13°C4°C / 35°C
26 mm
75%11 km/h
October18°C10°C1°C / 30°C
42 mm
84%12 km/h
November13°C7°C-2°C / 21°C
58 mm
87%13 km/h
December11°C5°C-6°C / 17°C
45 mm
88%14 km/h

Best time to visit Saint-Nazaire

The most comfortable time to visit Saint-Nazaire is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around November, totalling about 444 mm a year.

Travellers who prefer heat should aim for July, when highs average 26°C. November is the month to avoid if rain would spoil your plans — it averages 58 mm, roughly 4× the rainfall of the driest month (July).

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Saint-Nazaire forecast for what is happening now.

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