Déressia climate — normals and trends

Déressia (Chad) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 28.1 °C and it receives 823 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 (33.1 °C on average) and the coldest is August (25.3 °C). Rainfall peaks in August.

Déressia averages 0 frost days, 310 hot days (≥ 30 °C) and 116 rainy days per year.

Déressia has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 45.9 °C (on 10 March 2016) and the coldest 12.2 °C (on 19 January 1968).

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

DéressiaTandjilé Region

coords
9.76°, 16.27°
period
19402025 · 86 yrs
BShHot semi-aridWarmest monthAprilColdest monthAugustWettest monthAugustDriest monthJanuary

Mean daily temperature

28.1°C

Average daily high

34.5°C

Average daily low

22.7°C

Annual rainfall

823mm

Sunshine / day

10.7h

Mean relative humidity

50%

Average peak wind

13.9km/h

Seasonal range

7.8°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

310 d/yr

Rainy days (≥ 1 mm)

116 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.7 °C

Average feels-like low

23.1 °C

Average peak gust

30.2 km/h

Tropical nights (≥ 20 °C)

295 d/yr

Solar radiation

21.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.19 · p = < 0.001

1940Each stripe is one year, from 1940 (left) to 2025 (right). Blue = colder than the period average, red = warmer.2025

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

45.9 °C

10 March 2016

Coldest day

12.2 °C

19 January 1968

Wettest day

128 mm

31 May 1987

Windiest day

35.4 km/h

10 May 1967

Strongest gust

66.2 km/h

5 April 1967

Hottest feels-like

47.2 °C

21 April 2024

Coldest feels-like

7.9 °C

19 January 1968

Sunniest day

12.0 h

13 May 1958

YearHottest dayColdest dayAnnual meanRainfallHot daysFrost days
202543.7 °C30 March 202514.3 °C17 December 202528.6 °C729 mm3280
202445.2 °C30 March 202414.5 °C26 December 202429.0 °C882 mm3310
202343.4 °C8 April 202316.4 °C11 January 202328.8 °C687 mm3410
202244.8 °C7 March 202215.4 °C30 December 202228.3 °C741 mm3210
202143.9 °C8 April 202116.2 °C9 February 202129.1 °C577 mm3380
202044.6 °C3 April 202014.6 °C3 January 202028.8 °C555 mm3310
201944.4 °C21 March 201915.8 °C10 December 201928.7 °C970 mm3290
201843.4 °C27 March 201814.4 °C5 January 201828.9 °C728 mm3360
201743.4 °C22 March 201716.1 °C11 January 201728.8 °C708 mm3270
201645.9 °C10 March 201615.3 °C31 January 201628.8 °C825 mm3420
201544.2 °C1 May 201513.3 °C12 January 201529.0 °C608 mm3390
201443.7 °C23 March 201415.6 °C27 December 201428.7 °C774 mm3390
201343.3 °C27 February 201314.5 °C16 December 201328.8 °C672 mm3180
201243.7 °C9 April 201214.7 °C9 January 201228.1 °C889 mm3210
201143.3 °C24 March 201113.1 °C28 November 201128.2 °C784 mm3250
201045.0 °C20 April 201014.7 °C30 December 201028.9 °C863 mm3200
200943.5 °C7 March 200914.9 °C27 December 200928.7 °C638 mm3420
200842.8 °C26 March 200815.5 °C22 January 200827.8 °C757 mm3200
200743.8 °C31 March 200715.0 °C15 January 200728.6 °C729 mm3170
200643.3 °C28 February 200613.9 °C31 December 200628.6 °C735 mm3220
200543.8 °C21 February 200515.0 °C8 January 200528.9 °C839 mm3290
200443.5 °C25 March 200416.2 °C30 December 200428.2 °C744 mm3230
200343.4 °C8 April 200314.9 °C8 December 200328.3 °C914 mm3130
200242.4 °C7 April 200212.2 °C13 January 200228.2 °C696 mm3230
200142.3 °C13 April 200113.6 °C6 January 200127.8 °C861 mm3180
200043.0 °C22 March 200015.0 °C15 December 200027.6 °C809 mm3210
199943.0 °C20 March 199914.0 °C10 January 199927.9 °C1,022 mm2940
199844.6 °C11 April 199814.9 °C15 January 199828.6 °C867 mm3210
199742.1 °C23 March 199716.0 °C23 January 199727.7 °C777 mm3430
199642.4 °C31 March 199613.9 °C21 December 199627.9 °C1,024 mm3160
199543.1 °C17 March 199515.8 °C13 January 199528.0 °C910 mm3250
199443.5 °C8 March 199415.0 °C15 January 199428.1 °C1,100 mm3100
199342.9 °C4 March 199313.9 °C7 January 199328.1 °C735 mm3250
199244.0 °C27 March 199213.7 °C5 January 199227.6 °C866 mm3050
199143.1 °C31 March 199114.6 °C21 December 199128.2 °C782 mm3220
199043.5 °C8 April 199016.9 °C3 January 199028.8 °C716 mm3420
198941.3 °C7 April 198912.8 °C21 January 198927.1 °C768 mm3070
198842.9 °C1 March 198816.4 °C28 December 198827.6 °C1,129 mm2920
198743.3 °C21 March 198715.7 °C18 December 198728.3 °C918 mm3240
198643.1 °C16 April 198612.9 °C8 December 198627.9 °C827 mm3020
198543.6 °C19 March 198516.7 °C29 December 198527.7 °C1,041 mm2830
198442.3 °C30 March 198415.3 °C25 January 198428.0 °C765 mm3240
198343.2 °C17 April 198314.1 °C4 January 198328.0 °C597 mm3160
198242.7 °C17 March 198214.0 °C4 December 198227.3 °C824 mm3020
198142.2 °C16 April 198115.7 °C23 January 198127.2 °C976 mm2980
198042.5 °C21 March 198012.9 °C27 December 198027.6 °C1,074 mm2980
197942.5 °C16 April 197916.1 °C4 January 197927.7 °C942 mm3050
197841.9 °C5 April 197813.0 °C11 January 197827.4 °C1,020 mm3040
197744.3 °C21 April 197713.0 °C26 December 197727.7 °C921 mm3170
197640.7 °C27 March 197614.2 °C2 January 197627.4 °C887 mm3160
197542.3 °C15 March 197513.9 °C7 December 197527.2 °C1,122 mm2950
197441.8 °C23 March 197414.3 °C30 December 197427.5 °C979 mm2930
197343.8 °C22 March 197315.5 °C23 December 197328.8 °C711 mm3290
197243.3 °C28 March 197215.3 °C8 January 197228.3 °C737 mm3300
197143.2 °C11 March 197113.0 °C1 January 197127.8 °C703 mm3040
197042.8 °C7 April 197013.4 °C3 December 197027.8 °C800 mm3080
196943.3 °C5 April 196915.5 °C23 December 196927.8 °C1,073 mm3130
196842.6 °C7 April 196812.2 °C19 January 196827.4 °C739 mm3050
196743.1 °C3 April 196713.6 °C27 January 196727.2 °C838 mm2980
196643.4 °C5 May 196613.9 °C5 January 196629.2 °C425 mm3420
196543.1 °C24 April 196514.6 °C18 December 196529.0 °C429 mm3470
196443.1 °C31 March 196415.4 °C13 January 196428.8 °C527 mm3130
196342.7 °C25 March 196314.5 °C9 December 196328.3 °C635 mm3180
196241.1 °C23 March 196214.2 °C7 January 196227.9 °C702 mm2930
196142.1 °C17 April 196115.6 °C28 December 196127.7 °C766 mm2860
196043.2 °C29 March 196016.4 °C24 January 196028.3 °C692 mm3050
195942.6 °C15 March 195915.2 °C29 December 195928.3 °C569 mm3180
195842.0 °C29 March 195816.1 °C8 January 195827.7 °C976 mm2730
195741.1 °C6 May 195713.7 °C11 January 195727.0 °C995 mm2660
195642.0 °C11 May 195615.8 °C20 December 195627.7 °C1,022 mm2650
195542.1 °C26 April 195515.7 °C31 December 195527.2 °C978 mm2570
195440.8 °C30 April 195415.1 °C15 January 195427.4 °C890 mm2580
195342.4 °C23 April 195313.1 °C23 December 195327.0 °C1,295 mm2520
195241.6 °C28 March 195216.3 °C6 January 195227.7 °C1,059 mm2870
195142.2 °C12 March 195115.7 °C27 December 195127.7 °C933 mm3030
195041.7 °C1 March 195015.7 °C21 November 195027.4 °C964 mm2800
194942.9 °C29 April 194916.0 °C8 February 194929.2 °C382 mm3360
194841.1 °C28 March 194814.6 °C22 December 194827.0 °C1,081 mm2710
194741.7 °C31 March 194716.3 °C8 December 194727.1 °C1,239 mm2320
194643.2 °C10 March 194615.5 °C13 January 194627.4 °C1,036 mm2580
194541.9 °C26 April 194514.8 °C9 February 194527.4 °C822 mm2850
194442.6 °C14 March 194415.8 °C1 December 194427.7 °C996 mm2730
194341.7 °C14 March 194317.5 °C18 November 194329.1 °C437 mm3090
194242.2 °C27 March 194218.4 °C22 January 194228.2 °C845 mm2800
194143.1 °C1 April 194116.4 °C27 December 194129.1 °C593 mm3370
194040.7 °C9 April 194017.7 °C10 January 194028.3 °C579 mm3430

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?

Across the whole year

Average daily high
35.5 °C
+1.0 °C
Hot days (≥ 30 °C)
328 d/yr
+18
Frost days (< 0 °C)
0 d/yr
0
Annual rainfall
729 mm
-94 mm

Month by month

Highvs. normalPrecipitationvs. normal
Jan35.8 °C+1.2 °C0 mm0 mm
Feb38.5 °C+1.2 °C0 mm0 mm
Mar42.0 °C+2.2 °C0 mm-3 mm
Apr40.5 °C+0.8 °C8 mm-10 mm
May38.7 °C+1.7 °C6 mm-51 mm
Jun34.8 °C+1.3 °C71 mm-27 mm
Jul30.3 °C-0.1 °C298 mm+104 mm
Aug29.4 °C+0.1 °C230 mm-12 mm
Sep30.8 °C+0.6 °C96 mm-61 mm
Oct33.2 °C+0.4 °C21 mm-30 mm
Nov36.2 °C+1.3 °C0 mm-4 mm
Dec36.3 °C+2.0 °C0 mm-0 mm

The year's extremes

Hottest day
43.7 °C
30 Mar 2025
Coldest day
14.3 °C
17 Dec 2025
Wettest day
52.7 mm
29 Jun 2025
Windiest day
28.0 km/h
21 Mar 2025
Strongest gust
56.9 km/h
5 Oct 2025
Hottest feels-like
45.8 °C
24 Apr 2025
Coldest feels-like
10.8 °C
11 Jan 2025
Sunniest day
12.0 h
21 Mar 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 Déressia?

Déressia has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.1 °C and it receives 823 mm of precipitation per year.

What is the hottest day ever recorded in Déressia?

The hottest day measured in Déressia between 1940 and 2025 was 10 March 2016, reaching 45.9 °C.

What is the coldest day in Déressia?

The coldest day measured in Déressia between 1940 and 2025 was 19 January 1968, at 12.2 °C.

Does it snow in Déressia?

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

Has the climate of Déressia warmed?

Yes: Déressia warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Déressia?

The wettest day measured in Déressia between 1940 and 2025 was 31 May 1987, with 128 mm of rain in 24 hours.

What was the windiest day in Déressia?

The windiest day measured in Déressia between 1940 and 2025 was 10 May 1967, with winds reaching 35.4 km/h.

What is the warmest month in Déressia?

The warmest month in Déressia is April (33.1 °C on average); the coldest is August (25.3 °C).

How much does it rain in Déressia?

Déressia receives on average 823 mm of precipitation per year, spread over about 116 rainy days.

Is it sunny in Déressia?

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

Are there tropical nights in Déressia?

Yes: Déressia has on average 295 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Déressia?

In Déressia, between 1940 and 2025, the highest apparent temperature reached 47.2 °C on 21 April 2024, and the lowest was 7.9 °C on 19 January 1968.

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