Tonj climate — normals and trends

Q: What is the climate of Tonj?

Tonj has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 1,135 mm of precipitation per year.

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

The hottest day measured in Tonj between 1940 and 2025 was 26 February 2005, reaching 43.3 °C.

Q: What is the coldest day in Tonj?

The coldest day measured in Tonj between 1940 and 2025 was 28 December 1983, at 14.8 °C.

Q: Does it snow in Tonj?

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

Q: Has the climate of Tonj warmed?

Yes: Tonj warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Tonj?

The wettest day measured in Tonj between 1940 and 2025 was 26 November 1963, with 90 mm of rain in 24 hours.

Q: What was the windiest day in Tonj?

The windiest day measured in Tonj between 1940 and 2025 was 14 June 1967, with winds reaching 26.0 km/h.

Q: What is the warmest month in Tonj?

The warmest month in Tonj is March (30.2 °C on average); the coldest is August (25.1 °C).

Q: How much does it rain in Tonj?

Tonj receives on average 1,135 mm of precipitation per year, spread over about 168 rainy days.

Q: Is it sunny in Tonj?

Tonj gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Tonj (South Sudan) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.3 °C and it receives 1,135 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 (30.2 °C on average) and the coldest is August (25.1 °C). Rainfall peaks in August.

Tonj averages 0 frost days, 295 hot days (≥ 30 °C) and 168 rainy days per year.

Tonj has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.

The hottest day of the period reached 43.3 °C (on 26 February 2005) and the coldest 14.8 °C (on 28 December 1983).

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

TonjWarrap

coords: 7.27°, 28.68°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthMarchColdest monthAugustWettest monthAugustDriest monthJanuary

Mean daily temperature

27.3°C

Average daily high

33.0°C

Average daily low

23.0°C

Annual rainfall

1,135mm

Sunshine / day

10.5h

Mean relative humidity

61%

Average peak wind

11.7km/h

Seasonal range

5.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

295 d/yr

Rainy days (≥ 1 mm)

168 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.3 °C

Average feels-like low

24.6 °C

Average peak gust

29.0 km/h

Tropical nights (≥ 20 °C)

351 d/yr

Solar radiation

20.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.5 °C

since 1940

+0.3 °C per decade · r² = 0.70 · 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

43.3 °C

26 February 2005

Coldest day

14.8 °C

28 December 1983

Wettest day

90 mm

26 November 1963

Windiest day

26.0 km/h

14 June 1967

Strongest gust

60.1 km/h

18 January 1979

Hottest feels-like

45.5 °C

28 March 2016

Coldest feels-like

10.9 °C

5 February 1957

Sunniest day

12.0 h

9 April 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	41.2 °C23 February 2025	17.4 °C31 December 2025	28.1 °C	592 mm	326
2024	42.4 °C14 March 2024	21.1 °C22 August 2024	29.7 °C	752 mm	332
2023	41.4 °C9 April 2023	21.8 °C24 June 2023	29.4 °C	634 mm	348
2022	41.7 °C22 March 2022	20.2 °C29 August 2022	28.6 °C	775 mm	307
2021	41.6 °C10 March 2021	21.0 °C7 February 2021	28.8 °C	734 mm	316
2020	41.8 °C6 March 2020	19.0 °C12 January 2020	28.8 °C	849 mm	324
2019	42.0 °C21 March 2019	19.8 °C29 December 2019	28.8 °C	884 mm	326
2018	41.3 °C10 February 2018	21.2 °C24 August 2018	28.8 °C	682 mm	339
2017	42.7 °C15 March 2017	21.2 °C22 August 2017	29.2 °C	764 mm	333
2016	42.4 °C29 February 2016	19.3 °C28 January 2016	29.0 °C	770 mm	336
2015	42.6 °C19 February 2015	17.6 °C11 January 2015	28.7 °C	749 mm	344
2014	40.6 °C1 March 2014	20.7 °C19 August 2014	28.2 °C	913 mm	326
2013	41.3 °C3 March 2013	19.8 °C16 December 2013	28.6 °C	805 mm	329
2012	40.9 °C3 April 2012	20.0 °C24 January 2012	28.1 °C	861 mm	303
2011	40.7 °C3 April 2011	17.5 °C1 December 2011	27.7 °C	996 mm	316
2010	42.0 °C31 January 2010	21.1 °C3 January 2010	28.3 °C	1,054 mm	317
2009	40.8 °C7 March 2009	20.0 °C6 January 2009	28.6 °C	797 mm	353
2008	39.7 °C5 March 2008	20.7 °C15 October 2008	27.9 °C	921 mm	320
2007	40.7 °C2 April 2007	18.5 °C1 January 2007	28.0 °C	897 mm	321
2006	40.8 °C27 February 2006	17.8 °C30 December 2006	27.9 °C	964 mm	320
2005	43.3 °C26 February 2005	19.8 °C7 January 2005	28.5 °C	964 mm	329
2004	40.8 °C26 March 2004	18.9 °C7 February 2004	28.0 °C	828 mm	331
2003	40.6 °C7 March 2003	18.8 °C8 December 2003	27.8 °C	1,131 mm	312
2002	41.6 °C8 April 2002	17.6 °C13 January 2002	27.6 °C	833 mm	328
2001	39.2 °C27 February 2001	16.7 °C26 January 2001	27.5 °C	980 mm	331
2000	41.8 °C22 March 2000	18.1 °C30 January 2000	27.3 °C	1,050 mm	316
1999	41.0 °C6 February 1999	19.0 °C10 January 1999	27.3 °C	1,129 mm	309
1998	42.1 °C3 April 1998	17.7 °C17 January 1998	27.8 °C	1,252 mm	318
1997	39.5 °C23 March 1997	17.7 °C13 February 1997	27.1 °C	987 mm	316
1996	39.6 °C10 March 1996	18.5 °C28 March 1996	26.9 °C	1,324 mm	285
1995	40.5 °C11 March 1995	19.2 °C26 December 1995	27.2 °C	1,244 mm	298
1994	39.5 °C7 March 1994	18.3 °C6 December 1994	27.1 °C	1,206 mm	295
1993	40.1 °C4 March 1993	17.6 °C15 January 1993	26.9 °C	1,053 mm	307
1992	40.9 °C12 March 1992	16.1 °C5 January 1992	26.9 °C	1,090 mm	303
1991	40.3 °C6 February 1991	19.0 °C17 December 1991	27.1 °C	1,357 mm	302
1990	41.2 °C8 April 1990	19.2 °C1 January 1990	27.9 °C	1,006 mm	324
1989	40.4 °C3 March 1989	16.7 °C12 January 1989	26.9 °C	1,091 mm	302
1988	41.6 °C3 March 1988	19.0 °C29 December 1988	27.6 °C	1,113 mm	303
1987	41.4 °C23 March 1987	17.2 °C4 January 1987	27.4 °C	1,060 mm	325
1986	39.8 °C24 February 1986	15.7 °C7 December 1986	26.7 °C	1,250 mm	286
1985	41.0 °C14 March 1985	17.8 °C18 February 1985	26.4 °C	1,375 mm	249
1984	39.9 °C20 February 1984	17.7 °C12 December 1984	26.7 °C	1,201 mm	285
1983	41.4 °C28 March 1983	14.8 °C28 December 1983	27.3 °C	1,103 mm	314
1982	40.3 °C26 March 1982	16.9 °C10 February 1982	26.9 °C	976 mm	303
1981	40.2 °C7 March 1981	18.9 °C11 February 1981	27.3 °C	1,100 mm	296
1980	40.2 °C11 March 1980	17.9 °C14 December 1980	26.9 °C	1,303 mm	301
1979	39.1 °C16 February 1979	18.5 °C29 December 1979	26.7 °C	1,476 mm	303
1978	40.2 °C6 February 1978	16.4 °C18 January 1978	26.5 °C	1,450 mm	264
1977	38.8 °C15 February 1977	18.0 °C1 November 1977	26.6 °C	1,285 mm	279
1976	38.7 °C2 March 1976	16.5 °C8 January 1976	26.5 °C	1,273 mm	276
1975	39.3 °C17 February 1975	17.2 °C19 January 1975	26.4 °C	1,384 mm	244
1974	40.9 °C13 March 1974	17.8 °C28 December 1974	26.3 °C	1,528 mm	263
1973	41.0 °C28 March 1973	18.4 °C6 November 1973	27.1 °C	1,271 mm	288
1972	40.3 °C31 March 1972	18.7 °C1 January 1972	26.8 °C	1,383 mm	285
1971	40.7 °C7 March 1971	15.3 °C25 December 1971	26.3 °C	1,321 mm	250
1970	40.2 °C27 February 1970	17.4 °C16 December 1970	26.8 °C	1,255 mm	279
1969	39.5 °C4 March 1969	18.1 °C31 January 1969	27.0 °C	1,419 mm	305
1968	38.9 °C5 April 1968	16.1 °C10 December 1968	26.9 °C	1,065 mm	304
1967	38.0 °C9 March 1967	18.1 °C21 November 1967	26.6 °C	1,117 mm	293
1966	40.1 °C2 May 1966	17.9 °C2 March 1966	27.8 °C	967 mm	298
1965	39.6 °C19 April 1965	18.0 °C18 December 1965	27.5 °C	889 mm	290
1964	40.5 °C11 April 1964	18.7 °C14 February 1964	27.2 °C	1,199 mm	226
1963	38.6 °C24 March 1963	18.4 °C27 December 1963	26.5 °C	1,232 mm	254
1962	38.4 °C26 February 1962	15.4 °C4 January 1962	26.3 °C	1,449 mm	290
1961	40.8 °C8 March 1961	15.4 °C28 December 1961	26.6 °C	1,215 mm	279
1960	39.8 °C23 February 1960	18.8 °C31 January 1960	27.1 °C	1,311 mm	307
1959	40.5 °C15 March 1959	17.4 °C29 December 1959	26.6 °C	1,306 mm	304
1958	40.5 °C3 April 1958	16.7 °C17 February 1958	26.9 °C	1,449 mm	290
1957	38.2 °C6 May 1957	15.2 °C6 February 1957	26.4 °C	1,246 mm	300
1956	39.8 °C8 March 1956	16.9 °C18 January 1956	26.2 °C	1,318 mm	267
1955	39.4 °C17 March 1955	17.9 °C19 December 1955	26.1 °C	1,470 mm	269
1954	41.2 °C6 March 1954	16.9 °C9 December 1954	26.1 °C	1,221 mm	229
1953	38.9 °C21 January 1953	14.9 °C20 December 1953	26.0 °C	1,518 mm	275
1952	39.1 °C25 January 1952	18.8 °C1 January 1952	26.4 °C	1,735 mm	288
1951	39.5 °C24 April 1951	17.0 °C26 December 1951	26.3 °C	1,477 mm	295
1950	38.6 °C26 February 1950	17.4 °C6 December 1950	25.8 °C	1,639 mm	262
1949	39.2 °C24 March 1949	17.8 °C11 February 1949	26.2 °C	1,615 mm	280
1948	39.2 °C3 April 1948	18.4 °C24 December 1948	26.3 °C	1,482 mm	236
1947	38.5 °C2 March 1947	18.4 °C7 December 1947	26.6 °C	1,225 mm	236
1946	40.9 °C30 March 1946	15.8 °C11 December 1946	26.8 °C	1,152 mm	232
1945	39.2 °C23 February 1945	17.6 °C18 January 1945	26.4 °C	1,111 mm	260
1944	40.3 °C17 February 1944	18.2 °C2 December 1944	26.9 °C	1,043 mm	270
1943	40.9 °C14 March 1943	17.0 °C11 December 1943	26.4 °C	1,388 mm	220
1942	40.3 °C6 February 1942	17.7 °C6 January 1942	26.8 °C	1,060 mm	269
1941	41.2 °C22 March 1941	17.3 °C5 December 1941	27.3 °C	889 mm	300
1940	38.9 °C10 March 1940	18.3 °C21 November 1940	26.5 °C	1,333 mm	248

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

34.1 °C

+1.1 °C

Hot days (≥ 30 °C)

326 d/yr

+31

Frost days (< 0 °C)

0 d/yr

Annual rainfall

592 mm

-543 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	36.9 °C	+2.0 °C	0 mm	-3 mm
Feb	39.2 °C	+2.8 °C	0 mm	-9 mm
Mar	37.6 °C	+0.9 °C	2 mm	-30 mm
Apr	36.2 °C	+0.7 °C	16 mm	-57 mm
May	35.0 °C	+1.8 °C	19 mm	-108 mm
Jun	33.6 °C	+2.3 °C	23 mm	-124 mm
Jul	30.1 °C	+0.2 °C	137 mm	-39 mm
Aug	29.6 °C	0.0 °C	141 mm	-49 mm
Sep	31.1 °C	+0.7 °C	155 mm	-25 mm
Oct	31.7 °C	+0.6 °C	93 mm	-57 mm
Nov	34.1 °C	+1.5 °C	7 mm	-35 mm
Dec	33.9 °C	-0.1 °C	0 mm	-7 mm

The year's extremes

Hottest day

41.2 °C

23 Feb 2025

Coldest day

17.4 °C

31 Dec 2025

Wettest day

25.7 mm

20 Sep 2025

Windiest day

22.7 km/h

23 Apr 2025

Strongest gust

46.8 km/h

23 Apr 2025

Hottest feels-like

42.5 °C

4 Apr 2025

Coldest feels-like

14.1 °C

19 Dec 2025

Sunniest day

12.0 h

9 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 Tonj?

Tonj has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 1,135 mm of precipitation per year.

What is the hottest day ever recorded in Tonj?

The hottest day measured in Tonj between 1940 and 2025 was 26 February 2005, reaching 43.3 °C.

What is the coldest day in Tonj?

The coldest day measured in Tonj between 1940 and 2025 was 28 December 1983, at 14.8 °C.

Does it snow in Tonj?

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

Has the climate of Tonj warmed?

Yes: Tonj warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Tonj?

The wettest day measured in Tonj between 1940 and 2025 was 26 November 1963, with 90 mm of rain in 24 hours.

What was the windiest day in Tonj?

The windiest day measured in Tonj between 1940 and 2025 was 14 June 1967, with winds reaching 26.0 km/h.

What is the warmest month in Tonj?

The warmest month in Tonj is March (30.2 °C on average); the coldest is August (25.1 °C).

How much does it rain in Tonj?

Tonj receives on average 1,135 mm of precipitation per year, spread over about 168 rainy days.

Is it sunny in Tonj?

Tonj gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Are there tropical nights in Tonj?

Yes: Tonj has on average 351 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Tonj?

In Tonj, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 28 March 2016, and the lowest was 10.9 °C on 5 February 1957.

Compare Tonj with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Tonj

Other cities — South Sudan

All cities in South Sudan →