Saint-Denis Temperature by Month
Saint-Denis, Reunion has a consistently comfortable climate year-round, with daytime highs averaging 25°C (77°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Saint-Denis Monthly Temperatures
The climate in Saint-Denis remains fairly constant, offering comfortable temperatures throughout the year. Maximum daytime temperatures reach a comfortable 28°C (82°F) in February, dropping to a comfortable 23°C (73°F) in August. Nighttime lows stay between 24°C (75°F) and 18°C (64°F).
The chart below illustrates the average maximum day and minimum night temperatures in Saint-Denis by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest.
The chart below shows the average temperature throughout the year:
Temperature: Saint-Denis vs Reunion
The map below shows the annual temperature across Reunion. 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-Denis vs World: Temperature Compared
Saint-Denis's average annual maximum temperature is 25°C (77°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.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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-Denis this rarely lasts long on the ground.
For more on Saint-Denis's weather — including monthly rainfall, sunshine hours, and humidity — visit our Saint-Denis climate page.
