Saint-Jean-de-Monts Temperature by Month
The average annual maximum temperature in Saint-Jean-de-Monts, Pays de la Loire, France is 17°C (63°F), with daytime highs ranging from 11°C (52°F) in February to 23°C (73°F) in August. This page covers monthly averages, day-night differences, and how Saint-Jean-de-Monts compares to cities worldwide.
Saint-Jean-de-Monts Monthly Temperatures
In Saint-Jean-de-Monts, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 17°C (63°F) in August to 6°C (43°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Saint-Jean-de-Monts by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 228 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Saint-Jean-de-Monts 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.
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Saint-Jean-de-Monts vs World: Temperature Compared
Saint-Jean-de-Monts's average annual maximum temperature is 17°C (63°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Saint-Jean-de-Monts?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Saint-Jean-de-Monts, February is the coolest month, with average highs of 11°C (52°F) and humidity around 85% — considered very high. In August, the warmest month, temperatures average 23°C (73°F) with 76% humidity — conditions that feel high. For a full picture, see our humidity page.
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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Saint-Jean-de-Monts this rarely lasts long on the ground.
For more on Saint-Jean-de-Monts's weather — including monthly rainfall, sunshine hours, and humidity — visit our Saint-Jean-de-Monts climate page.
