Boromo climate — normals and trends
Boromo (Burkina Faso) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 28.2 °C and it receives 727 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 April (32.4 °C on average) and the coldest is August (25.6 °C). Rainfall peaks in August.
Boromo averages 0 frost days, 312 hot days (≥ 30 °C) and 110 rainy days per year.
Boromo has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 43.8 °C (on 6 April 2020) and the coldest 11.5 °C (on 28 December 1960).
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
BoromoBoucle du Mouhoun
- coords
- 11.75°, -2.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.2°C
Average daily high
34.1°C
Average daily low
22.6°C
Annual rainfall
727mm
Sunshine / day
10.8h
Mean relative humidity
51%
Average peak wind
14.6km/h
Seasonal range
6.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
312 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.2 °C
Average feels-like low
23.3 °C
Average peak gust
31.6 km/h
Tropical nights (≥ 20 °C)
290 d/yr
Solar radiation
21.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.62 · 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
43.8 °C
6 April 2020
Coldest day
11.5 °C
28 December 1960
Wettest day
171 mm
17 September 2017
Windiest day
36.0 km/h
27 May 1946
Strongest gust
63.0 km/h
27 May 1946
Hottest feels-like
47.4 °C
25 April 2025
Coldest feels-like
7.0 °C
28 December 1960
Sunniest day
12.4 h
8 July 1945
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 | 34.2 °C | +0.8 °C | 0 mm | -0 mm |
| Feb | 36.4 °C | +0.5 °C | 0 mm | -1 mm |
| Mar | 40.1 °C | +2.0 °C | 9 mm | +3 mm |
| Apr | 39.3 °C | +0.8 °C | 6 mm | -17 mm |
| May | 36.8 °C | 0.0 °C | 17 mm | -40 mm |
| Jun | 34.3 °C | +0.6 °C | 44 mm | -34 mm |
| Jul | 30.3 °C | -0.4 °C | 212 mm | +61 mm |
| Aug | 29.5 °C | +0.2 °C | 166 mm | -50 mm |
| Sep | 30.7 °C | +0.4 °C | 148 mm | +2 mm |
| Oct | 34.8 °C | +1.2 °C | 29 mm | -16 mm |
| Nov | 36.3 °C | +0.9 °C | 1 mm | -2 mm |
| Dec | 34.7 °C | +1.1 °C | 1 mm | -0 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 Boromo?
Boromo has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.2 °C and it receives 727 mm of precipitation per year.
What is the hottest day ever recorded in Boromo?
The hottest day measured in Boromo between 1940 and 2025 was 6 April 2020, reaching 43.8 °C.
What is the coldest day in Boromo?
The coldest day measured in Boromo between 1940 and 2025 was 28 December 1960, at 11.5 °C.
Does it snow in Boromo?
Almost never: Boromo sees virtually no snow, with about 0 frost days per year.
Has the climate of Boromo warmed?
Yes: Boromo warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Boromo?
The wettest day measured in Boromo between 1940 and 2025 was 17 September 2017, with 171 mm of rain in 24 hours.
What was the windiest day in Boromo?
The windiest day measured in Boromo between 1940 and 2025 was 27 May 1946, with winds reaching 36.0 km/h.
What is the warmest month in Boromo?
The warmest month in Boromo is April (32.4 °C on average); the coldest is August (25.6 °C).
How much does it rain in Boromo?
Boromo receives on average 727 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Boromo?
Boromo gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Boromo?
Yes: Boromo has on average 290 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Boromo?
In Boromo, between 1940 and 2025, the highest apparent temperature reached 47.4 °C on 25 April 2025, and the lowest was 7.0 °C on 28 December 1960.
Compare Boromo with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Boromo