Bumpe climate — normals and trends
Bumpe (Sierra Leone) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 25.5 °C and it receives 2,685 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 March (27.4 °C on average) and the coldest is August (23.9 °C). Rainfall peaks in August.
Bumpe averages 0 frost days, 192 hot days (≥ 30 °C) and 251 rainy days per year.
Bumpe has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.0 °C (on 21 February 2016) and the coldest 15.3 °C (on 10 January 1957).
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
BumpeSouthern Province
- coords
- 7.89°, -11.91°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.5°C
Average daily high
30.3°C
Average daily low
22.4°C
Annual rainfall
2,685mm
Sunshine / day
8.7h
Mean relative humidity
85%
Average peak wind
9.7km/h
Seasonal range
3.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
192 d/yr
Rainy days (≥ 1 mm)
251 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.6 °C
Average feels-like low
26.7 °C
Average peak gust
25.4 km/h
Tropical nights (≥ 20 °C)
359 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.73 · 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
40.0 °C
21 February 2016
Coldest day
15.3 °C
10 January 1957
Wettest day
267 mm
2 September 1952
Windiest day
20.5 km/h
21 February 1943
Strongest gust
51.1 km/h
12 July 1953
Hottest feels-like
47.0 °C
27 April 2024
Coldest feels-like
14.4 °C
6 January 1989
Sunniest day
12.0 h
19 June 2016
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 | 35.9 °C | +3.6 °C | 8 mm | -15 mm |
| Feb | 37.6 °C | +4.0 °C | 4 mm | -24 mm |
| Mar | 37.0 °C | +3.4 °C | 30 mm | -34 mm |
| Apr | 34.5 °C | +2.4 °C | 99 mm | -43 mm |
| May | 31.8 °C | +1.4 °C | 220 mm | -48 mm |
| Jun | 30.2 °C | +1.0 °C | 226 mm | -116 mm |
| Jul | 28.0 °C | +0.2 °C | 496 mm | +65 mm |
| Aug | 27.5 °C | +0.2 °C | 620 mm | +131 mm |
| Sep | 28.0 °C | -0.1 °C | 776 mm | +315 mm |
| Oct | 29.8 °C | +0.7 °C | 281 mm | -1 mm |
| Nov | 30.1 °C | +0.5 °C | 125 mm | +8 mm |
| Dec | 30.4 °C | -0.1 °C | 49 mm | +11 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 Bumpe?
Bumpe has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 25.5 °C and it receives 2,685 mm of precipitation per year.
What is the hottest day ever recorded in Bumpe?
The hottest day measured in Bumpe between 1940 and 2025 was 21 February 2016, reaching 40.0 °C.
What is the coldest day in Bumpe?
The coldest day measured in Bumpe between 1940 and 2025 was 10 January 1957, at 15.3 °C.
Does it snow in Bumpe?
Almost never: Bumpe sees virtually no snow, with about 0 frost days per year.
Has the climate of Bumpe warmed?
Yes: Bumpe warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bumpe?
The wettest day measured in Bumpe between 1940 and 2025 was 2 September 1952, with 267 mm of rain in 24 hours.
What was the windiest day in Bumpe?
The windiest day measured in Bumpe between 1940 and 2025 was 21 February 1943, with winds reaching 20.5 km/h.
What is the warmest month in Bumpe?
The warmest month in Bumpe is March (27.4 °C on average); the coldest is August (23.9 °C).
How much does it rain in Bumpe?
Bumpe receives on average 2,685 mm of precipitation per year, spread over about 251 rainy days.
Is it sunny in Bumpe?
Bumpe gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
Are there tropical nights in Bumpe?
Yes: Bumpe has on average 359 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bumpe?
In Bumpe, between 1940 and 2025, the highest apparent temperature reached 47.0 °C on 27 April 2024, and the lowest was 14.4 °C on 6 January 1989.
Compare Bumpe with another city
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Nearby cities
The climate around Bumpe