Climate averages 1991–2020
Saint-Pierre weather
by month.
See how the year changes. January (tied with February) has the highest average daily maximum; August (tied with September) has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Saint-Pierre averages a daytime high of 27.3°C and a nighttime low of 22.3°C, with about 1,449 mm of rain on roughly 208 days. January (tied with February) is the warmest month (average high 29.7°C) and July the coolest (24.2°C). January is the wettest month with 278 mm; August (tied with September) is the driest with 45 mm.
The annual picture
A year in Saint-Pierre
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Saint-Pierre climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C25.3°C | 25.3°C | 278 | 23.9 | 13.313 h |
| February | 29.7°C25.5°C | 25.5°C | 266 | 22.9 | 12.813 h |
| March | 29.4°C25.0°C | 25.0°C | 211 | 21.3 | 12.212 h |
| April | 28.5°C23.9°C | 23.9°C | 93 | 18.2 | 11.612 h |
| May | 26.7°C22.1°C | 22.1°C | 86 | 17.1 | 11.111 h |
| June | 25.0°C20.3°C | 20.3°C | 50 | 13.7 | 10.911 h |
| July | 24.2°C19.4°C | 19.4°C | 49 | 14.3 | 11.011 h |
| August | 24.5°C19.2°C | 19.2°C | 45 | 12.6 | 11.411 h |
| September | 25.5°C19.6°C | 19.6°C | 45 | 12.0 | 12.012 h |
| October | 26.8°C20.9°C | 20.9°C | 56 | 13.4 | 12.613 h |
| November | 28.0°C22.4°C | 22.4°C | 96 | 16.4 | 13.113 h |
| December | 29.2°C24.3°C | 24.3°C | 174 | 21.6 | 13.413 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- Saint-PaulReunion · 42 kmHigh 26.0°C · Low 21.8°C · 892 mm rain a year
- Saint-DenisReunion · 51 kmHigh 26.0°C · Low 22.3°C · 1,279 mm rain a year
- VacoasMauritius · 238 kmHigh 25.3°C · Low 20.4°C · 867 mm rain a year
- Port LouisMauritius · 248 kmHigh 27.3°C · Low 22.9°C · 867 mm rain a year
- ToamasinaMadagascar · 728 kmHigh 25.4°C · Low 21.6°C · 2,260 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+4, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -21.30°, 55.50° (5 km from the city centre), adjusted up by 2.4°C for the difference between the city's elevation (36 m) and the cell's (403 m). Rain comes from the 0.25° cell at -21.25°, 55.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.