Obuasi climate — normals and trends
Obuasi (Ghana) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.6 °C and it receives 1,195 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 February (27.4 °C on average) and the coldest is August (24.1 °C). Rainfall peaks in June.
Obuasi averages 0 frost days, 184 hot days (≥ 30 °C) and 220 rainy days per year.
Obuasi has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.0 °C (on 15 February 2024) and the coldest 15.8 °C (on 29 December 1977).
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
ObuasiAshanti
- coords
- 6.20°, -1.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.6°C
Average daily high
30.1°C
Average daily low
22.6°C
Annual rainfall
1,195mm
Sunshine / day
8.8h
Mean relative humidity
82%
Average peak wind
11.4km/h
Seasonal range
3.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
184 d/yr
Rainy days (≥ 1 mm)
220 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.0 °C
Average feels-like low
26.3 °C
Average peak gust
26.1 km/h
Tropical nights (≥ 20 °C)
358 d/yr
Solar radiation
16.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.82 · 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
39.0 °C
15 February 2024
Coldest day
15.8 °C
29 December 1977
Wettest day
157 mm
5 October 2019
Windiest day
20.3 km/h
15 February 2024
Strongest gust
46.4 km/h
3 March 1983
Hottest feels-like
44.4 °C
19 February 2024
Coldest feels-like
12.8 °C
9 January 1957
Sunniest day
12.0 h
14 April 1940
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 | 35.2 °C | +3.3 °C | 4 mm | -23 mm |
| Feb | 34.6 °C | +1.7 °C | 29 mm | -21 mm |
| Mar | 33.7 °C | +1.4 °C | 84 mm | -20 mm |
| Apr | 32.6 °C | +1.1 °C | 74 mm | -46 mm |
| May | 31.6 °C | +1.2 °C | 118 mm | -31 mm |
| Jun | 30.2 °C | +1.5 °C | 173 mm | +10 mm |
| Jul | 28.5 °C | +0.8 °C | 45 mm | -72 mm |
| Aug | 27.6 °C | -0.1 °C | 65 mm | -20 mm |
| Sep | 29.4 °C | +1.0 °C | 122 mm | -10 mm |
| Oct | 30.5 °C | +1.1 °C | 133 mm | -11 mm |
| Nov | 31.1 °C | +1.1 °C | 50 mm | -23 mm |
| Dec | 31.1 °C | +0.7 °C | 45 mm | +13 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 Obuasi?
Obuasi has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.6 °C and it receives 1,195 mm of precipitation per year.
What is the hottest day ever recorded in Obuasi?
The hottest day measured in Obuasi between 1940 and 2025 was 15 February 2024, reaching 39.0 °C.
What is the coldest day in Obuasi?
The coldest day measured in Obuasi between 1940 and 2025 was 29 December 1977, at 15.8 °C.
Does it snow in Obuasi?
Almost never: Obuasi sees virtually no snow, with about 0 frost days per year.
Has the climate of Obuasi warmed?
Yes: Obuasi warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Obuasi?
The wettest day measured in Obuasi between 1940 and 2025 was 5 October 2019, with 157 mm of rain in 24 hours.
What was the windiest day in Obuasi?
The windiest day measured in Obuasi between 1940 and 2025 was 15 February 2024, with winds reaching 20.3 km/h.
What is the warmest month in Obuasi?
The warmest month in Obuasi is February (27.4 °C on average); the coldest is August (24.1 °C).
How much does it rain in Obuasi?
Obuasi receives on average 1,195 mm of precipitation per year, spread over about 220 rainy days.
Is it sunny in Obuasi?
Obuasi gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
Are there tropical nights in Obuasi?
Yes: Obuasi has on average 358 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Obuasi?
In Obuasi, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 19 February 2024, and the lowest was 12.8 °C on 9 January 1957.
Compare Obuasi with another city
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Nearby cities
The climate around Obuasi