Tarkwa climate — normals and trends
Tarkwa (Ghana) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 2,423 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 March (26.3 °C on average) and the coldest is August (23.9 °C). Rainfall peaks in June.
Tarkwa averages 0 frost days, 175 hot days (≥ 30 °C) and 316 rainy days per year.
Tarkwa has warmed by +2.2 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.5 °C (on 8 February 2020) and the coldest 15.4 °C (on 9 January 1992).
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
TarkwaWestern
- coords
- 5.30°, -1.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
29.7°C
Average daily low
22.1°C
Annual rainfall
2,423mm
Sunshine / day
9.3h
Mean relative humidity
88%
Average peak wind
9.3km/h
Seasonal range
2.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
175 d/yr
Rainy days (≥ 1 mm)
316 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.6 °C
Average feels-like low
26.2 °C
Average peak gust
25.2 km/h
Tropical nights (≥ 20 °C)
353 d/yr
Solar radiation
16.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.86 · 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
36.5 °C
8 February 2020
Coldest day
15.4 °C
9 January 1992
Wettest day
212 mm
31 May 2021
Windiest day
20.4 km/h
16 August 1974
Strongest gust
43.6 km/h
4 August 1947
Hottest feels-like
44.2 °C
22 February 2016
Coldest feels-like
15.2 °C
4 January 2020
Sunniest day
12.0 h
23 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 | 32.7 °C | +1.9 °C | 82 mm | -30 mm |
| Feb | 32.3 °C | +0.8 °C | 124 mm | -22 mm |
| Mar | 32.3 °C | +0.9 °C | 152 mm | -75 mm |
| Apr | 31.9 °C | +0.8 °C | 167 mm | -66 mm |
| May | 31.4 °C | +1.3 °C | 279 mm | -7 mm |
| Jun | 29.9 °C | +1.5 °C | 431 mm | +141 mm |
| Jul | 28.3 °C | +0.8 °C | 72 mm | -105 mm |
| Aug | 27.1 °C | -0.3 °C | 101 mm | -17 mm |
| Sep | 29.1 °C | +0.9 °C | 150 mm | -59 mm |
| Oct | 30.2 °C | +0.8 °C | 277 mm | +3 mm |
| Nov | 31.2 °C | +0.9 °C | 219 mm | +0 mm |
| Dec | 31.0 °C | +0.7 °C | 179 mm | +45 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 Tarkwa?
Tarkwa has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 2,423 mm of precipitation per year.
What is the hottest day ever recorded in Tarkwa?
The hottest day measured in Tarkwa between 1940 and 2025 was 8 February 2020, reaching 36.5 °C.
What is the coldest day in Tarkwa?
The coldest day measured in Tarkwa between 1940 and 2025 was 9 January 1992, at 15.4 °C.
Does it snow in Tarkwa?
Almost never: Tarkwa sees virtually no snow, with about 0 frost days per year.
Has the climate of Tarkwa warmed?
Yes: Tarkwa warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tarkwa?
The wettest day measured in Tarkwa between 1940 and 2025 was 31 May 2021, with 212 mm of rain in 24 hours.
What was the windiest day in Tarkwa?
The windiest day measured in Tarkwa between 1940 and 2025 was 16 August 1974, with winds reaching 20.4 km/h.
What is the warmest month in Tarkwa?
The warmest month in Tarkwa is March (26.3 °C on average); the coldest is August (23.9 °C).
How much does it rain in Tarkwa?
Tarkwa receives on average 2,423 mm of precipitation per year, spread over about 316 rainy days.
Is it sunny in Tarkwa?
Tarkwa gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Tarkwa?
Yes: Tarkwa has on average 353 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tarkwa?
In Tarkwa, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 22 February 2016, and the lowest was 15.2 °C on 4 January 2020.
Compare Tarkwa with another city
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Nearby cities
The climate around Tarkwa