La Possession climate — normals and trends
La Possession (Réunion) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.8 °C and it receives 980 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is February (25.3 °C on average) and the coldest is August (20.2 °C). Rainfall peaks in January.
La Possession averages 0 frost days, 0 hot days (≥ 30 °C) and 186 rainy days per year.
La Possession has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 29.3 °C (on 6 January 2019) and the coldest 15.8 °C (on 2 September 1993).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
La PossessionReunion
- coords
- -20.93°, 55.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.8°C
Average daily high
24.1°C
Average daily low
21.7°C
Annual rainfall
980mm
Sunshine / day
11.3h
Mean relative humidity
77%
Average peak wind
10.0km/h
Seasonal range
5.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
186 d/yr
Annual snowfall
0.0 cm
Average feels-like high
28.0 °C
Average feels-like low
23.8 °C
Average peak gust
27.9 km/h
Tropical nights (≥ 20 °C)
260 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.44 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
29.3 °C
6 January 2019
Coldest day
15.8 °C
2 September 1993
Wettest day
183 mm
17 March 1952
Windiest day
72.7 km/h
28 February 1964
Strongest gust
163.1 km/h
23 January 2002
Hottest feels-like
37.3 °C
2 February 2025
Coldest feels-like
12.2 °C
2 September 1943
Sunniest day
13.0 h
13 December 2024
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 27.4 °C | +1.1 °C | 103 mm | -83 mm |
| Feb | 27.4 °C | +1.0 °C | 370 mm | +186 mm |
| Mar | 27.1 °C | +0.9 °C | 135 mm | -17 mm |
| Apr | 26.8 °C | +1.3 °C | 55 mm | -22 mm |
| May | 25.4 °C | +1.4 °C | 24 mm | -26 mm |
| Jun | 23.3 °C | +0.7 °C | 19 mm | -13 mm |
| Jul | 22.2 °C | +0.4 °C | 35 mm | +6 mm |
| Aug | 22.0 °C | +0.3 °C | 21 mm | -13 mm |
| Sep | 23.0 °C | +0.9 °C | 27 mm | -7 mm |
| Oct | 23.8 °C | +0.8 °C | 35 mm | -6 mm |
| Nov | 24.4 °C | +0.2 °C | 86 mm | +22 mm |
| Dec | 25.7 °C | +0.2 °C | 125 mm | +25 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of La Possession?
La Possession has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.8 °C and it receives 980 mm of precipitation per year.
What is the hottest day ever recorded in La Possession?
The hottest day measured in La Possession between 1940 and 2025 was 6 January 2019, reaching 29.3 °C.
What is the coldest day in La Possession?
The coldest day measured in La Possession between 1940 and 2025 was 2 September 1993, at 15.8 °C.
Does it snow in La Possession?
Almost never: La Possession sees virtually no snow, with about 0 frost days per year.
Has the climate of La Possession warmed?
Yes: La Possession warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in La Possession?
The wettest day measured in La Possession between 1940 and 2025 was 17 March 1952, with 183 mm of rain in 24 hours.
What was the windiest day in La Possession?
The windiest day measured in La Possession between 1940 and 2025 was 28 February 1964, with winds reaching 72.7 km/h.
What is the warmest month in La Possession?
The warmest month in La Possession is February (25.3 °C on average); the coldest is August (20.2 °C).
How much does it rain in La Possession?
La Possession receives on average 980 mm of precipitation per year, spread over about 186 rainy days.
Is it sunny in La Possession?
La Possession gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
Are there tropical nights in La Possession?
Yes: La Possession has on average 260 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in La Possession?
In La Possession, between 1940 and 2025, the highest apparent temperature reached 37.3 °C on 2 February 2025, and the lowest was 12.2 °C on 2 September 1943.
Compare La Possession with another city
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Nearby cities
The climate around La Possession