Saint-Nazaire Temperature by Month
Saint-Nazaire, Languedoc-Roussillon, France has an average annual maximum temperature of 21°C (70°F), ranging from 11°C (52°F) in January to 32°C (90°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Saint-Nazaire Monthly Temperatures
The weather in Saint-Nazaire experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 19°C (66°F) in July to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Saint-Nazaire by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 371 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Saint-Nazaire vs France
The map below shows the annual temperature across France. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Saint-Nazaire vs World: Temperature Compared
Saint-Nazaire's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Saint-Nazaire's weather — including monthly rainfall, sunshine hours, and humidity — visit our Saint-Nazaire climate page.
