Déressia weather in September

In September, Déressia sees average daytime highs of 31°C and overnight lows near 23°C, with 160 mm of rain across 21.8 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 30°C in the first days to 32°C by the end. The sky is clear or mostly clear about 9% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Déressia's 11th-clearest and 12th-windiest month. For the whole year in context, see Déressia's year-round climate.

Daytime high: 31°; 10th warmest
Overnight low: 23°; 6th coldest
Rainfall: 160 mm; 21.8 wet days
Daylight: 12 h 06 min; 5:48 AM – 5:51 PM
Cloud cover: 73%; 11th clearest
Wind: 7 km/h; 12th windiest
Solar energy: 5.33 kWh/m²
Travel score: 3.2; out of 10

← August Déressia year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 30°C in the first days to 32°C by the end.

A typical September day in Déressia reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and about 3°C cooler than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	31	32	32	32
Avg low (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	31	23
13	31	23
14	31	23
15	31	23
16	31	23
17	31	23
18	31	23
19	31	23
20	31	23
21	31	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	32	23
29	32	23
30	32	23

How September really feels in Déressia

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Déressia weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	35° / 18°	0	0	11.5	3.3
Feb	38° / 22°	0	0	11.7	1.4
Mar	40° / 25°	2	0.5	11.9	0.0
Apr	40° / 28°	16	4.4	12.2	0.2
May	37° / 27°	60	11.4	12.4	1.5
Jun	33° / 25°	93	14.4	12.6	2.9
Jul	31° / 23°	186	23.5	12.5	3.1
Aug	30° / 23°	241	26.3	12.3	3.1
Sep	31° / 23°	160	21.8	12.1	3.2
Oct	33° / 23°	49	9.8	11.8	3.4
Nov	35° / 21°	1	0.4	11.6	2.9
Dec	35° / 18°	0	0	11.4	3.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 72%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	16	16	17	18	19	19	20	21	22	23	24	24	26	27	27	28	29	30	30	30	32	32	33	34	35	36	38	39	40	41
Cloudier (%)	84	84	83	82	81	81	80	79	78	77	76	76	74	73	73	72	71	70	70	70	68	68	67	66	65	64	62	61	60	59

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	17	83
4	18	82
5	19	81
6	19	81
7	20	80
8	21	79
9	22	78
10	23	77
11	24	76
12	24	76
13	26	74
14	27	73
15	27	73
16	28	72
17	29	71
18	30	70
19	30	70
20	30	70
21	32	68
22	32	68
23	33	67
24	34	66
25	35	65
26	36	64
27	38	62
28	39	61
29	40	60
30	41	59

Chance of precipitation in September

Any precipitation

Déressia gets around 160 mm of rain over 21.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 72% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	81	80	80	79	79	78	78	77	77	76	76	76	75	75	74	73	73	72	71	70	68	67	66	65	64	62	61	59	58	56

	Rain chance (%)
1	81
2	80
3	80
4	79
5	79
6	78
7	78
8	77
9	77
10	76
11	76
12	76
13	75
14	75
15	74
16	73
17	73
18	72
19	71
20	70
21	68
22	67
23	66
24	65
25	64
26	62
27	61
28	59
29	58
30	56

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Muggy (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1
Oppressive (%)	95	95	94	94	94	94	93	93	93	92	92	92	92	91	91	90	90	89	89	88	88	87	87	86	85	85	84	84	84	84
Miserable (%)	5	5	6	6	6	6	7	7	7	8	8	8	8	9	9	10	10	11	11	12	12	13	13	14	14	14	15	15	15	15

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	95	5
2	0	95	5
3	0	94	6
4	0	94	6
5	0	94	6
6	0	94	6
7	0	93	7
8	0	93	7
9	0	93	7
10	0	92	8
11	0	92	8
12	0	92	8
13	0	92	8
14	0	91	9
15	0	91	9
16	0	90	10
17	0	90	10
18	0	89	11
19	0	89	11
20	0	88	12
21	0	88	12
22	0	87	13
23	0	87	13
24	0	86	14
25	1	85	14
26	1	85	14
27	1	84	15
28	1	84	15
29	1	84	15
30	1	84	15

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	7	calm
2	7	calm
3	7	calm
4	7	calm
5	7	calm
6	7	calm
7	7	calm
8	7	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 5:49 AM to 5:47 AM, and sunset from 6:00 PM to 5:42 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.2	12.2	12.2	12.2	12.2	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	11.9	11.9	11.9
Sunrise (AM)	5:49	5:49	5:49	5:49	5:49	5:49	5:48	5:48	5:48	5:48	5:48	5:48	5:48	5:48	5:48	5:48	5:48	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47	5:47
Sunset (PM)	6:00	6:00	5:59	5:58	5:58	5:57	5:57	5:56	5:55	5:55	5:54	5:53	5:53	5:52	5:51	5:51	5:50	5:50	5:49	5:48	5:48	5:47	5:46	5:46	5:45	5:44	5:44	5:43	5:43	5:42

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	5:49	6:00
2	12.2	5:49	6:00
3	12.2	5:49	5:59
4	12.2	5:49	5:58
5	12.2	5:49	5:58
6	12.1	5:49	5:57
7	12.1	5:48	5:57
8	12.1	5:48	5:56
9	12.1	5:48	5:55
10	12.1	5:48	5:55
11	12.1	5:48	5:54
12	12.1	5:48	5:53
13	12.1	5:48	5:53
14	12.1	5:48	5:52
15	12.1	5:48	5:51
16	12.1	5:48	5:51
17	12.0	5:48	5:50
18	12.0	5:47	5:50
19	12.0	5:47	5:49
20	12.0	5:47	5:48
21	12.0	5:47	5:48
22	12.0	5:47	5:47
23	12.0	5:47	5:46
24	12.0	5:47	5:46
25	12.0	5:47	5:45
26	12.0	5:47	5:44
27	12.0	5:47	5:44
28	11.9	5:47	5:43
29	11.9	5:47	5:43
30	11.9	5:47	5:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.33 kWh/m².

For context, solar energy here swings from a low near 4.8 kWh/m² to a high of 6.98 kWh/m² in March across the year — September's 5.33 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	5.0	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.6	5.6	5.7	5.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.0	Bright
5	5.1	Bright
6	5.1	Bright
7	5.1	Bright
8	5.1	Bright
9	5.2	Bright
10	5.2	Bright
11	5.2	Bright
12	5.3	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.4	Bright
17	5.4	Bright
18	5.4	Bright
19	5.5	Bright
20	5.5	Bright
21	5.5	Bright
22	5.5	Bright
23	5.5	Bright
24	5.6	Bright
25	5.6	Bright
26	5.6	Bright
27	5.6	Bright
28	5.6	Bright
29	5.7	Bright
30	5.7	Bright

Planning a trip in September

Hazard calendar for Déressia

In seasonPeak

In September, Déressia sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Déressia's monsoon runs July–September, when most of the year's rain falls.

Déressia sees seasonal dust haze (March–June), heaviest in March.

Monsoon

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Déressia?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.2

Sightseeing

4th-best month of the year

4.7

Beach & pool

6th-best month of the year

September is a weaker month for outdoor sightseeing in Déressia.

What to pack for Déressia in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Déressia sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Déressia in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Déressia peaks around March 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	10	12	13	12	10	11	12	13	11	11	9	8
Level	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Extreme
Feb	12	Extreme
Mar	13	Extreme
Apr	12	Extreme
May	10	Very high
Jun	11	Extreme
Jul	12	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in Déressia in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Déressia is worst in March — around 62 µg/m³ PM2.5 (unhealthy), about 4.8× the cleanest month (July, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	52	53	62	36	19	17	13	16	18	25	31	52
Level	Poor	Poor	Unhealthy	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor

	PM2.5 (µg/m³)	Level
Jan	52	Poor
Feb	53	Poor
Mar	62	Unhealthy
Apr	36	Poor
May	19	Moderate
Jun	17	Moderate
Jul	13	Moderate
Aug	16	Moderate
Sep	18	Moderate
Oct	25	Moderate
Nov	31	Moderate
Dec	52	Poor

Location & terrain

Where is Déressia?

Déressia sits at 9.8°N, 16.3°E, 346 m above sea level, in Chad. The nearest listed city is Laï, 41 km away.

Topography around Déressia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Déressia.

Within 3 km, the terrain around Déressia has only modest variations in elevation — a maximum elevation change of 8 m around an average of 345 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 22 m; within 80 km, only modest variations in elevation — a maximum elevation change of 187 m.

The land around Déressia is covered by cropland (66%) and grassland (28%) within 3 km, grassland (63%) and cropland (26%) within 16 km, and grassland (45%), cropland (32%) and shrubs (21%) within 80 km.

3 km

8 m

cropland 66%

16 km

22 m

grassland 63%

80 km

187 m

grassland 45%

treesshrubsgrasslandcroplandartificial surfaceswetland

← August Déressia year-round climate October →Best places to visit in September

September weather nearby: Laï 41 km · Béré 51 km · Kelo 71 km · Gounou Gaya 84 km · Benoy 87 km · Bousso 94 km · Bongor 114 km · Bébédja 125 km

Chad travel facts

Travel advisory: Level 4; Do Not Travel
Power plugs: Type C / D / E / F; 220 V · 50 Hz
Prices: ≈ 35% of US; price level, 2025
GDP per capita: $1,022; 2025
Happiness: 4.4 / 10; World Happiness, 2025
Safe drinking water: 6%; of population, 2024
Road deaths: 32.4; per 100k/yr, 2019
Income group: Low; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Déressia (9.7602°, 16.2698°, elevation 346 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	31	23
13	31	23
14	31	23
15	31	23
16	31	23
17	31	23
18	31	23
19	31	23
20	31	23
21	31	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	32	23
29	32	23
30	32	23

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	17	83
4	18	82
5	19	81
6	19	81
7	20	80
8	21	79
9	22	78
10	23	77
11	24	76
12	24	76
13	26	74
14	27	73
15	27	73
16	28	72
17	29	71
18	30	70
19	30	70
20	30	70
21	32	68
22	32	68
23	33	67
24	34	66
25	35	65
26	36	64
27	38	62
28	39	61
29	40	60
30	41	59

	Rain chance (%)
1	81
2	80
3	80
4	79
5	79
6	78
7	78
8	77
9	77
10	76
11	76
12	76
13	75
14	75
15	74
16	73
17	73
18	72
19	71
20	70
21	68
22	67
23	66
24	65
25	64
26	62
27	61
28	59
29	58
30	56

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	95	5
2	0	95	5
3	0	94	6
4	0	94	6
5	0	94	6
6	0	94	6
7	0	93	7
8	0	93	7
9	0	93	7
10	0	92	8
11	0	92	8
12	0	92	8
13	0	92	8
14	0	91	9
15	0	91	9
16	0	90	10
17	0	90	10
18	0	89	11
19	0	89	11
20	0	88	12
21	0	88	12
22	0	87	13
23	0	87	13
24	0	86	14
25	1	85	14
26	1	85	14
27	1	84	15
28	1	84	15
29	1	84	15
30	1	84	15

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	31	23
13	31	23
14	31	23
15	31	23
16	31	23
17	31	23
18	31	23
19	31	23
20	31	23
21	31	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	32	23
29	32	23
30	32	23

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	17	83
4	18	82
5	19	81
6	19	81
7	20	80
8	21	79
9	22	78
10	23	77
11	24	76
12	24	76
13	26	74
14	27	73
15	27	73
16	28	72
17	29	71
18	30	70
19	30	70
20	30	70
21	32	68
22	32	68
23	33	67
24	34	66
25	35	65
26	36	64
27	38	62
28	39	61
29	40	60
30	41	59

	Rain chance (%)
1	81
2	80
3	80
4	79
5	79
6	78
7	78
8	77
9	77
10	76
11	76
12	76
13	75
14	75
15	74
16	73
17	73
18	72
19	71
20	70
21	68
22	67
23	66
24	65
25	64
26	62
27	61
28	59
29	58
30	56

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	95	5
2	0	95	5
3	0	94	6
4	0	94	6
5	0	94	6
6	0	94	6
7	0	93	7
8	0	93	7
9	0	93	7
10	0	92	8
11	0	92	8
12	0	92	8
13	0	92	8
14	0	91	9
15	0	91	9
16	0	90	10
17	0	90	10
18	0	89	11
19	0	89	11
20	0	88	12
21	0	88	12
22	0	87	13
23	0	87	13
24	0	86	14
25	1	85	14
26	1	85	14
27	1	84	15
28	1	84	15
29	1	84	15
30	1	84	15

	Avg high (°C)	Avg low (°C)
1	30	23
2	30	23
3	30	23
4	30	23
5	30	23
6	30	23
7	30	23
8	30	23
9	30	23
10	30	23
11	30	23
12	31	23
13	31	23
14	31	23
15	31	23
16	31	23
17	31	23
18	31	23
19	31	23
20	31	23
21	31	23
22	31	23
23	31	23
24	31	23
25	31	23
26	31	23
27	31	23
28	32	23
29	32	23
30	32	23

	Clearer (%)	Cloudier (%)
1	16	84
2	16	84
3	17	83
4	18	82
5	19	81
6	19	81
7	20	80
8	21	79
9	22	78
10	23	77
11	24	76
12	24	76
13	26	74
14	27	73
15	27	73
16	28	72
17	29	71
18	30	70
19	30	70
20	30	70
21	32	68
22	32	68
23	33	67
24	34	66
25	35	65
26	36	64
27	38	62
28	39	61
29	40	60
30	41	59

	Rain chance (%)
1	81
2	80
3	80
4	79
5	79
6	78
7	78
8	77
9	77
10	76
11	76
12	76
13	75
14	75
15	74
16	73
17	73
18	72
19	71
20	70
21	68
22	67
23	66
24	65
25	64
26	62
27	61
28	59
29	58
30	56

	Muggy (%)	Oppressive (%)	Miserable (%)
1	0	95	5
2	0	95	5
3	0	94	6
4	0	94	6
5	0	94	6
6	0	94	6
7	0	93	7
8	0	93	7
9	0	93	7
10	0	92	8
11	0	92	8
12	0	92	8
13	0	92	8
14	0	91	9
15	0	91	9
16	0	90	10
17	0	90	10
18	0	89	11
19	0	89	11
20	0	88	12
21	0	88	12
22	0	87	13
23	0	87	13
24	0	86	14
25	1	85	14
26	1	85	14
27	1	84	15
28	1	84	15
29	1	84	15
30	1	84	15