Betroka climate — normals and trends
Betroka (Madagascar) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 20.0 °C and it receives 897 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 January (22.6 °C on average) and the coldest is July (15.8 °C). Rainfall peaks in January.
Betroka averages 0 frost days, 32 hot days (≥ 30 °C) and 94 rainy days per year.
Betroka has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.0 °C (on 12 October 2010) and the coldest 3.1 °C (on 18 July 1976).
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
BetrokaAnosy
- coords
- -23.27°, 46.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.0°C
Average daily high
25.7°C
Average daily low
15.5°C
Annual rainfall
897mm
Sunshine / day
11.0h
Mean relative humidity
69%
Average peak wind
17.1km/h
Seasonal range
6.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
32 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
0.0 cm
Average feels-like high
26.3 °C
Average feels-like low
15.0 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
19 d/yr
Solar radiation
20.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.66 · 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
37.0 °C
12 October 2010
Coldest day
3.1 °C
18 July 1976
Wettest day
215 mm
16 January 2000
Windiest day
53.9 km/h
24 March 1941
Strongest gust
120.2 km/h
18 March 1941
Hottest feels-like
38.4 °C
15 December 2023
Coldest feels-like
0.3 °C
18 July 1976
Sunniest day
13.4 h
28 December 2025
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 | 30.2 °C | +2.6 °C | 304 mm | +85 mm |
| Feb | 27.6 °C | +0.2 °C | 206 mm | +44 mm |
| Mar | 27.2 °C | +0.4 °C | 84 mm | -28 mm |
| Apr | 28.2 °C | +2.3 °C | 22 mm | -16 mm |
| May | 25.2 °C | +1.4 °C | 2 mm | -12 mm |
| Jun | 23.6 °C | +1.6 °C | 1 mm | -4 mm |
| Jul | 21.5 °C | -0.2 °C | 2 mm | -3 mm |
| Aug | 23.7 °C | +0.4 °C | 7 mm | +1 mm |
| Sep | 27.5 °C | +1.5 °C | 2 mm | -7 mm |
| Oct | 28.1 °C | 0.0 °C | 33 mm | -6 mm |
| Nov | 29.0 °C | +0.6 °C | 74 mm | -16 mm |
| Dec | 27.7 °C | -0.1 °C | 174 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 Betroka?
Betroka has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 897 mm of precipitation per year.
What is the hottest day ever recorded in Betroka?
The hottest day measured in Betroka between 1940 and 2025 was 12 October 2010, reaching 37.0 °C.
What is the coldest day in Betroka?
The coldest day measured in Betroka between 1940 and 2025 was 18 July 1976, at 3.1 °C.
Does it snow in Betroka?
Almost never: Betroka sees virtually no snow, with about 0 frost days per year.
Has the climate of Betroka warmed?
Yes: Betroka warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Betroka?
The wettest day measured in Betroka between 1940 and 2025 was 16 January 2000, with 215 mm of rain in 24 hours.
What was the windiest day in Betroka?
The windiest day measured in Betroka between 1940 and 2025 was 24 March 1941, with winds reaching 53.9 km/h.
What is the warmest month in Betroka?
The warmest month in Betroka is January (22.6 °C on average); the coldest is July (15.8 °C).
How much does it rain in Betroka?
Betroka receives on average 897 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Betroka?
Betroka gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
Are there tropical nights in Betroka?
Yes: Betroka has on average 19 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Betroka?
In Betroka, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 15 December 2023, and the lowest was 0.3 °C on 18 July 1976.
Compare Betroka with another city
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Nearby cities
The climate around Betroka