Bolgatanga climate — normals and trends

Q: What is the climate of Bolgatanga?

Bolgatanga has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.3 °C and it receives 724 mm of precipitation per year.

Q: What is the hottest day ever recorded in Bolgatanga?

The hottest day measured in Bolgatanga between 1940 and 2025 was 9 April 1983, reaching 43.0 °C.

Q: What is the coldest day in Bolgatanga?

The coldest day measured in Bolgatanga between 1940 and 2025 was 9 January 1957, at 14.5 °C.

Q: Does it snow in Bolgatanga?

Almost never: Bolgatanga sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Bolgatanga warmed?

Yes: Bolgatanga warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Bolgatanga?

The wettest day measured in Bolgatanga between 1940 and 2025 was 31 July 2021, with 148 mm of rain in 24 hours.

Q: What was the windiest day in Bolgatanga?

The windiest day measured in Bolgatanga between 1940 and 2025 was 24 January 1992, with winds reaching 32.8 km/h.

Q: What is the warmest month in Bolgatanga?

The warmest month in Bolgatanga is April (32.1 °C on average); the coldest is August (25.5 °C).

Q: How much does it rain in Bolgatanga?

Bolgatanga receives on average 724 mm of precipitation per year, spread over about 113 rainy days.

Q: Is it sunny in Bolgatanga?

Bolgatanga gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Bolgatanga (Ghana) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 28.3 °C and it receives 724 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 (32.1 °C on average) and the coldest is August (25.5 °C). Rainfall peaks in August.

Bolgatanga averages 0 frost days, 303 hot days (≥ 30 °C) and 113 rainy days per year.

Bolgatanga has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The hottest day of the period reached 43.0 °C (on 9 April 1983) and the coldest 14.5 °C (on 9 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

BolgatangaUpper East

coords: 10.79°, -0.85°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthAprilColdest monthAugustWettest monthAugustDriest monthJanuary

Mean daily temperature

28.3°C

Average daily high

33.9°C

Average daily low

23.3°C

Annual rainfall

724mm

Sunshine / day

10.7h

Mean relative humidity

55%

Average peak wind

14.6km/h

Seasonal range

6.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

303 d/yr

Rainy days (≥ 1 mm)

113 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.5 °C

Average feels-like low

24.4 °C

Average peak gust

31.2 km/h

Tropical nights (≥ 20 °C)

329 d/yr

Solar radiation

20.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.58 · p = < 0.001

19402025

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

43.0 °C

9 April 1983

Coldest day

14.5 °C

9 January 1957

Wettest day

148 mm

31 July 2021

Windiest day

32.8 km/h

24 January 1992

Strongest gust

61.9 km/h

24 January 1992

Hottest feels-like

47.4 °C

25 April 2025

Coldest feels-like

9.7 °C

9 January 1957

Sunniest day

12.1 h

14 July 1959

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	42.0 °C12 March 2025	19.1 °C25 November 2025	29.3 °C	627 mm	316
2024	42.6 °C16 March 2024	18.2 °C21 December 2024	29.4 °C	703 mm	332
2023	41.3 °C11 April 2023	17.8 °C3 January 2023	29.3 °C	636 mm	337
2022	40.7 °C10 March 2022	18.3 °C17 November 2022	28.5 °C	830 mm	307
2021	42.5 °C8 April 2021	19.1 °C2 January 2021	29.4 °C	673 mm	330
2020	41.1 °C6 April 2020	16.3 °C3 January 2020	29.0 °C	880 mm	309
2019	42.2 °C21 March 2019	18.4 °C26 December 2019	29.2 °C	712 mm	323
2018	40.7 °C3 March 2018	17.7 °C14 January 2018	29.0 °C	796 mm	319
2017	41.3 °C19 April 2017	19.2 °C11 January 2017	29.2 °C	687 mm	327
2016	41.1 °C23 April 2016	19.0 °C2 January 2016	29.2 °C	672 mm	331
2015	41.4 °C22 April 2015	16.9 °C14 January 2015	29.3 °C	676 mm	327
2014	40.5 °C24 February 2014	17.8 °C27 December 2014	29.1 °C	648 mm	327
2013	42.0 °C6 March 2013	17.6 °C6 January 2013	28.9 °C	525 mm	320
2012	41.0 °C6 April 2012	16.4 °C17 January 2012	28.6 °C	760 mm	316
2011	42.0 °C17 April 2011	18.2 °C19 January 2011	29.1 °C	584 mm	335
2010	42.0 °C22 February 2010	16.1 °C12 December 2010	29.1 °C	742 mm	321
2009	41.1 °C24 March 2009	17.4 °C24 January 2009	29.1 °C	650 mm	323
2008	40.6 °C26 March 2008	14.8 °C8 January 2008	28.3 °C	621 mm	306
2007	41.5 °C31 March 2007	16.6 °C5 January 2007	28.5 °C	709 mm	301
2006	41.3 °C11 April 2006	16.7 °C29 November 2006	28.7 °C	639 mm	308
2005	41.6 °C10 March 2005	17.8 °C15 January 2005	28.8 °C	541 mm	296
2004	40.6 °C4 April 2004	18.1 °C4 December 2004	28.6 °C	473 mm	304
2003	40.8 °C9 April 2003	16.1 °C10 December 2003	28.6 °C	672 mm	289
2002	40.6 °C16 March 2002	15.5 °C28 December 2002	28.5 °C	689 mm	305
2001	41.2 °C3 March 2001	17.8 °C29 December 2001	28.6 °C	691 mm	312
2000	40.8 °C5 May 2000	18.6 °C22 December 2000	28.5 °C	650 mm	322
1999	40.9 °C23 March 1999	16.8 °C30 December 1999	28.0 °C	986 mm	277
1998	42.2 °C3 April 1998	18.2 °C18 December 1998	28.9 °C	712 mm	300
1997	40.3 °C16 March 1997	18.7 °C20 November 1997	28.6 °C	648 mm	327
1996	40.3 °C20 March 1996	17.8 °C21 December 1996	28.5 °C	718 mm	311
1995	41.3 °C2 April 1995	16.7 °C11 January 1995	28.1 °C	742 mm	306
1994	41.1 °C23 March 1994	16.2 °C16 January 1994	28.3 °C	746 mm	309
1993	40.9 °C4 March 1993	16.6 °C11 January 1993	28.6 °C	700 mm	304
1992	40.9 °C1 April 1992	16.6 °C5 January 1992	28.0 °C	833 mm	290
1991	41.6 °C28 March 1991	16.9 °C24 December 1991	27.9 °C	753 mm	275
1990	40.1 °C29 March 1990	18.3 °C7 December 1990	28.4 °C	653 mm	301
1989	41.3 °C27 April 1989	15.3 °C2 January 1989	27.8 °C	863 mm	286
1988	42.2 °C5 March 1988	16.6 °C24 December 1988	28.5 °C	976 mm	299
1987	42.1 °C6 April 1987	17.9 °C23 December 1987	29.2 °C	656 mm	335
1986	40.8 °C15 April 1986	17.5 °C13 January 1986	28.4 °C	809 mm	303
1985	41.4 °C11 March 1985	16.3 °C17 December 1985	28.3 °C	684 mm	292
1984	42.5 °C7 April 1984	17.0 °C23 December 1984	28.7 °C	630 mm	343
1983	43.0 °C9 April 1983	17.6 °C7 January 1983	28.9 °C	557 mm	313
1982	41.6 °C8 April 1982	16.8 °C10 January 1982	28.2 °C	676 mm	328
1981	42.1 °C10 April 1981	17.7 °C9 January 1981	28.5 °C	846 mm	315
1980	42.0 °C25 March 1980	15.9 °C28 December 1980	28.4 °C	879 mm	311
1979	39.7 °C13 March 1979	16.0 °C5 January 1979	27.7 °C	833 mm	300
1978	41.0 °C27 March 1978	16.9 °C6 December 1978	27.8 °C	943 mm	301
1977	41.3 °C18 April 1977	15.5 °C28 December 1977	27.9 °C	737 mm	299
1976	41.7 °C10 April 1976	15.4 °C13 December 1976	27.4 °C	820 mm	279
1975	40.8 °C20 March 1975	16.5 °C22 January 1975	27.9 °C	539 mm	295
1974	40.7 °C30 April 1974	15.6 °C6 December 1974	27.7 °C	682 mm	277
1973	42.1 °C13 March 1973	16.4 °C2 December 1973	28.6 °C	620 mm	318
1972	40.6 °C11 March 1972	16.8 °C10 November 1972	28.1 °C	639 mm	331
1971	40.6 °C7 March 1971	16.0 °C17 November 1971	27.8 °C	896 mm	293
1970	41.3 °C23 April 1970	16.0 °C6 December 1970	28.3 °C	755 mm	302
1969	42.3 °C6 April 1969	15.3 °C30 November 1969	27.9 °C	776 mm	291
1968	40.5 °C19 April 1968	16.2 °C24 November 1968	27.6 °C	930 mm	303
1967	40.0 °C15 March 1967	17.3 °C4 January 1967	27.6 °C	797 mm	284
1966	41.2 °C29 March 1966	16.8 °C5 January 1966	28.0 °C	693 mm	305
1965	40.6 °C12 March 1965	17.2 °C6 December 1965	27.7 °C	800 mm	284
1964	41.3 °C9 March 1964	18.4 °C12 January 1964	28.2 °C	590 mm	299
1963	41.4 °C31 March 1963	16.1 °C13 December 1963	28.2 °C	686 mm	301
1962	40.6 °C4 March 1962	17.2 °C18 January 1962	27.7 °C	734 mm	291
1961	39.6 °C26 March 1961	16.8 °C12 December 1961	27.8 °C	566 mm	298
1960	40.3 °C2 April 1960	15.5 °C28 December 1960	27.7 °C	783 mm	288
1959	41.4 °C14 April 1959	16.7 °C31 December 1959	28.0 °C	870 mm	294
1958	40.7 °C30 March 1958	16.1 °C10 January 1958	28.4 °C	655 mm	284
1957	39.3 °C16 April 1957	14.5 °C9 January 1957	26.8 °C	1,012 mm	236
1956	39.5 °C7 March 1956	16.6 °C1 January 1956	27.5 °C	768 mm	280
1955	40.3 °C16 March 1955	16.1 °C27 December 1955	27.3 °C	731 mm	260
1954	40.8 °C12 April 1954	16.0 °C9 December 1954	27.5 °C	806 mm	271
1953	41.2 °C22 April 1953	17.7 °C2 February 1953	28.1 °C	629 mm	295
1952	40.7 °C20 March 1952	16.7 °C2 January 1952	27.4 °C	771 mm	279
1951	41.5 °C14 March 1951	16.2 °C23 November 1951	27.3 °C	915 mm	292
1950	40.5 °C31 March 1950	17.3 °C15 January 1950	27.2 °C	852 mm	269
1949	39.8 °C3 May 1949	18.4 °C13 February 1949	28.2 °C	689 mm	302
1948	40.8 °C27 March 1948	17.3 °C4 February 1948	27.5 °C	701 mm	290
1947	40.8 °C21 April 1947	17.1 °C1 January 1947	27.5 °C	814 mm	258
1946	40.7 °C22 April 1946	16.6 °C1 January 1946	27.9 °C	500 mm	314
1945	39.8 °C11 April 1945	16.5 °C7 November 1945	26.8 °C	783 mm	277
1944	40.7 °C17 April 1944	15.5 °C25 November 1944	27.5 °C	1,170 mm	276
1943	40.7 °C17 April 1943	17.7 °C29 January 1943	27.4 °C	694 mm	265
1942	40.5 °C30 March 1942	17.3 °C27 January 1942	28.4 °C	546 mm	296
1941	41.9 °C29 March 1941	18.1 °C29 January 1941	28.9 °C	509 mm	342
1940	40.4 °C10 April 1940	17.6 °C10 February 1940	28.5 °C	459 mm	348

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?

Year

Across the whole year

Average daily high

34.7 °C

+0.8 °C

Hot days (≥ 30 °C)

316 d/yr

+13

Frost days (< 0 °C)

0 d/yr

Annual rainfall

627 mm

-97 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	35.9 °C	+1.6 °C	0 mm	-0 mm
Feb	37.7 °C	+1.2 °C	0 mm	-2 mm
Mar	39.8 °C	+1.5 °C	2 mm	-11 mm
Apr	38.9 °C	+1.2 °C	9 mm	-26 mm
May	35.8 °C	+0.1 °C	22 mm	-37 mm
Jun	33.9 °C	+0.9 °C	52 mm	-18 mm
Jul	30.1 °C	-0.1 °C	156 mm	+17 mm
Aug	29.4 °C	+0.4 °C	210 mm	+4 mm
Sep	30.0 °C	+0.2 °C	160 mm	+12 mm
Oct	33.5 °C	+1.0 °C	16 mm	-31 mm
Nov	36.0 °C	+1.0 °C	1 mm	-4 mm
Dec	36.0 °C	+1.7 °C	0 mm	-1 mm

The year's extremes

Hottest day

42.0 °C

12 Mar 2025

Coldest day

19.1 °C

25 Nov 2025

Wettest day

33.3 mm

13 Jul 2025

Windiest day

24.3 km/h

9 Apr 2025

Strongest gust

45.7 km/h

17 Jul 2025

Hottest feels-like

47.4 °C

25 Apr 2025

Coldest feels-like

15.9 °C

11 Jan 2025

Sunniest day

12.0 h

3 Apr 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Bolgatanga?

Bolgatanga has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.3 °C and it receives 724 mm of precipitation per year.

What is the hottest day ever recorded in Bolgatanga?

The hottest day measured in Bolgatanga between 1940 and 2025 was 9 April 1983, reaching 43.0 °C.

What is the coldest day in Bolgatanga?

The coldest day measured in Bolgatanga between 1940 and 2025 was 9 January 1957, at 14.5 °C.

Does it snow in Bolgatanga?

Almost never: Bolgatanga sees virtually no snow, with about 0 frost days per year.

Has the climate of Bolgatanga warmed?

Yes: Bolgatanga warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Bolgatanga?

The wettest day measured in Bolgatanga between 1940 and 2025 was 31 July 2021, with 148 mm of rain in 24 hours.

What was the windiest day in Bolgatanga?

The windiest day measured in Bolgatanga between 1940 and 2025 was 24 January 1992, with winds reaching 32.8 km/h.

What is the warmest month in Bolgatanga?

The warmest month in Bolgatanga is April (32.1 °C on average); the coldest is August (25.5 °C).

How much does it rain in Bolgatanga?

Bolgatanga receives on average 724 mm of precipitation per year, spread over about 113 rainy days.

Is it sunny in Bolgatanga?

Bolgatanga gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Are there tropical nights in Bolgatanga?

Yes: Bolgatanga has on average 329 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Bolgatanga?

In Bolgatanga, between 1940 and 2025, the highest apparent temperature reached 47.4 °C on 25 April 2025, and the lowest was 9.7 °C on 9 January 1957.

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