Betioky climate — normals and trends
Betioky (Madagascar) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 24.5 °C and it receives 576 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 (27.0 °C on average) and the coldest is July (20.1 °C). Rainfall peaks in January.
Betioky averages 0 frost days, 224 hot days (≥ 30 °C) and 77 rainy days per year.
Betioky has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.3 °C (on 9 February 2020) and the coldest 7.6 °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
BetiokyAtsimo-Andrefana
- coords
- -23.72°, 44.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.5°C
Average daily high
31.0°C
Average daily low
19.2°C
Annual rainfall
576mm
Sunshine / day
11.1h
Mean relative humidity
61%
Average peak wind
17.3km/h
Seasonal range
6.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
224 d/yr
Rainy days (≥ 1 mm)
77 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.4 °C
Average feels-like low
19.8 °C
Average peak gust
35.6 km/h
Tropical nights (≥ 20 °C)
173 d/yr
Solar radiation
21.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
42.3 °C
9 February 2020
Coldest day
7.6 °C
18 July 1976
Wettest day
128 mm
25 January 1997
Windiest day
55.5 km/h
19 March 1941
Strongest gust
121.3 km/h
19 March 1941
Hottest feels-like
45.3 °C
27 December 2019
Coldest feels-like
5.6 °C
18 July 1976
Sunniest day
13.5 h
21 December 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 33.8 °C | +1.1 °C | 185 mm | +28 mm |
| Feb | 31.5 °C | -1.1 °C | 258 mm | +143 mm |
| Mar | 31.1 °C | -1.2 °C | 94 mm | +14 mm |
| Apr | 32.5 °C | +0.9 °C | 8 mm | -12 mm |
| May | 30.0 °C | +0.9 °C | 8 mm | -1 mm |
| Jun | 27.9 °C | +0.9 °C | 2 mm | -2 mm |
| Jul | 27.1 °C | +0.2 °C | 1 mm | -1 mm |
| Aug | 28.5 °C | -0.1 °C | 9 mm | +6 mm |
| Sep | 32.7 °C | +1.4 °C | 1 mm | -5 mm |
| Oct | 33.4 °C | +0.1 °C | 3 mm | -14 mm |
| Nov | 33.1 °C | -0.7 °C | 18 mm | -24 mm |
| Dec | 32.9 °C | -0.2 °C | 122 mm | -1 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 Betioky?
Betioky has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 24.5 °C and it receives 576 mm of precipitation per year.
What is the hottest day ever recorded in Betioky?
The hottest day measured in Betioky between 1940 and 2025 was 9 February 2020, reaching 42.3 °C.
What is the coldest day in Betioky?
The coldest day measured in Betioky between 1940 and 2025 was 18 July 1976, at 7.6 °C.
Does it snow in Betioky?
Almost never: Betioky sees virtually no snow, with about 0 frost days per year.
Has the climate of Betioky warmed?
Yes: Betioky warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Betioky?
The wettest day measured in Betioky between 1940 and 2025 was 25 January 1997, with 128 mm of rain in 24 hours.
What was the windiest day in Betioky?
The windiest day measured in Betioky between 1940 and 2025 was 19 March 1941, with winds reaching 55.5 km/h.
What is the warmest month in Betioky?
The warmest month in Betioky is January (27.0 °C on average); the coldest is July (20.1 °C).
How much does it rain in Betioky?
Betioky receives on average 576 mm of precipitation per year, spread over about 77 rainy days.
Is it sunny in Betioky?
Betioky gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in Betioky?
Yes: Betioky has on average 173 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Betioky?
In Betioky, between 1940 and 2025, the highest apparent temperature reached 45.3 °C on 27 December 2019, and the lowest was 5.6 °C on 18 July 1976.
Compare Betioky with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Betioky