Alarobia climate — normals and trends
Alarobia (Madagascar) has a subtropical highland, dry winter climate (Cwb) under the Köppen-Geiger classification. Its mean annual temperature is 16.9 °C and it receives 1,423 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 (19.6 °C on average) and the coldest is July (12.9 °C). Rainfall peaks in January.
Alarobia averages 0 frost days, 1 hot days (≥ 30 °C) and 159 rainy days per year.
Alarobia has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.0 °C (on 20 December 2024) and the coldest 3.6 °C (on 7 September 1986).
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
AlarobiaAnalamanga
- coords
- -18.97°, 47.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.9°C
Average daily high
22.0°C
Average daily low
13.4°C
Annual rainfall
1,423mm
Sunshine / day
9.8h
Mean relative humidity
82%
Average peak wind
15.0km/h
Seasonal range
6.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
159 d/yr
Annual snowfall
0.0 cm
Average feels-like high
22.4 °C
Average feels-like low
13.0 °C
Average peak gust
34.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.79 · 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
34.0 °C
20 December 2024
Coldest day
3.6 °C
7 September 1986
Wettest day
189 mm
20 January 1962
Windiest day
65.3 km/h
3 February 1994
Strongest gust
130.3 km/h
3 February 1994
Hottest feels-like
36.3 °C
20 December 2024
Coldest feels-like
0.8 °C
18 July 1991
Sunniest day
13.0 h
3 January 2013
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 | 27.5 °C | +3.0 °C | 137 mm | -171 mm |
| Feb | 25.9 °C | +1.5 °C | 611 mm | +344 mm |
| Mar | 25.4 °C | +1.5 °C | 136 mm | -71 mm |
| Apr | 25.4 °C | +2.6 °C | 40 mm | -28 mm |
| May | 21.3 °C | +0.6 °C | 36 mm | +8 mm |
| Jun | 19.6 °C | +1.2 °C | 15 mm | -2 mm |
| Jul | 17.6 °C | +0.1 °C | 22 mm | +2 mm |
| Aug | 19.5 °C | +1.1 °C | 18 mm | -1 mm |
| Sep | 22.6 °C | +1.8 °C | 3 mm | -15 mm |
| Oct | 24.5 °C | +1.1 °C | 15 mm | -44 mm |
| Nov | 26.0 °C | +1.4 °C | 318 mm | +174 mm |
| Dec | 24.2 °C | -0.6 °C | 510 mm | +240 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 Alarobia?
Alarobia has a subtropical highland, dry winter climate (Köppen Cwb). Over 1940-2025, the average annual temperature is 16.9 °C and it receives 1,423 mm of precipitation per year.
What is the hottest day ever recorded in Alarobia?
The hottest day measured in Alarobia between 1940 and 2025 was 20 December 2024, reaching 34.0 °C.
What is the coldest day in Alarobia?
The coldest day measured in Alarobia between 1940 and 2025 was 7 September 1986, at 3.6 °C.
Does it snow in Alarobia?
Almost never: Alarobia sees virtually no snow, with about 0 frost days per year.
Has the climate of Alarobia warmed?
Yes: Alarobia warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alarobia?
The wettest day measured in Alarobia between 1940 and 2025 was 20 January 1962, with 189 mm of rain in 24 hours.
What was the windiest day in Alarobia?
The windiest day measured in Alarobia between 1940 and 2025 was 3 February 1994, with winds reaching 65.3 km/h.
What is the warmest month in Alarobia?
The warmest month in Alarobia is January (19.6 °C on average); the coldest is July (12.9 °C).
How much does it rain in Alarobia?
Alarobia receives on average 1,423 mm of precipitation per year, spread over about 159 rainy days.
Is it sunny in Alarobia?
Alarobia gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Alarobia?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Alarobia.
What was the most extreme apparent temperature in Alarobia?
In Alarobia, between 1940 and 2025, the highest apparent temperature reached 36.3 °C on 20 December 2024, and the lowest was 0.8 °C on 18 July 1991.
Compare Alarobia with another city
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Nearby cities
The climate around Alarobia