Ouessé weather in September

In September, Ouessé sees average daytime highs of 30°C and overnight lows near 22°C, with 215 mm of rain across 23.9 wet days and about 12 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 0% 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 Ouessé's 10th-clearest and 11th-windiest month. For the whole year in context, see Ouessé's year-round climate.

Daytime high: 30°; 10th warmest
Overnight low: 22°; 5th coldest
Rainfall: 215 mm; 23.9 wet days
Daylight: 12 hours; 6:43 AM – 6:46 PM
Cloud cover: 80%; 10th clearest
Wind: 6 km/h; 11th windiest
Solar energy: 4.29 kWh/m²
Travel score: 3.2; out of 10

Ouessé is commune of Benin.

Density: 5/km²; people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Ouessé 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

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Ouessé reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°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)	29	29	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	31	31	31	31	31	31	31
Avg low (°C)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23

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

How September really feels in Ouessé

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.

Ouessé weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	34° / 21°	4	0.6	11.6	3.9
Feb	36° / 23°	12	2	11.7	2.7
Mar	36° / 25°	45	7.7	11.9	2.2
Apr	34° / 24°	89	13.4	12.2	2.5
May	33° / 24°	132	18	12.4	2.9
Jun	31° / 23°	145	21.1	12.5	3.2
Jul	29° / 23°	198	24.7	12.4	3.4
Aug	29° / 22°	216	24.9	12.3	3.4
Sep	30° / 22°	215	23.9	12	3.2
Oct	32° / 23°	117	17.3	11.8	3.4
Nov	34° / 22°	15	3	11.6	3.7
Dec	34° / 21°	3	0.7	11.5	4.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 11% of September, with mostly cloudy or overcast conditions the remaining 89%.

	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 (%)	8	8	8	8	9	9	10	10	11	11	11	11	12	12	12	12	13	13	13	12	13	13	13	13	13	13	13	13	13	14
Cloudier (%)	92	92	92	92	91	91	90	90	89	89	89	89	88	88	88	88	87	87	87	88	87	87	87	87	87	87	87	87	87	86

	Clearer (%)	Cloudier (%)
1	8	92
2	8	92
3	8	92
4	8	92
5	9	91
6	9	91
7	10	90
8	10	90
9	11	89
10	11	89
11	11	89
12	11	89
13	12	88
14	12	88
15	12	88
16	12	88
17	13	87
18	13	87
19	13	87
20	12	88
21	13	87
22	13	87
23	13	87
24	13	87
25	13	87
26	13	87
27	13	87
28	13	87
29	13	87
30	14	86

Chance of precipitation in September

Any precipitation

Ouessé gets around 215 mm of rain over 23.9 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 80% and peaks near 84% 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 (%)	83	84	84	84	84	83	83	83	83	83	83	83	82	82	82	81	81	80	79	79	78	77	77	76	75	75	74	74	74	73

	Rain chance (%)
1	83
2	84
3	84
4	84
5	84
6	83
7	83
8	83
9	83
10	83
11	83
12	83
13	82
14	82
15	82
16	81
17	81
18	80
19	79
20	79
21	78
22	77
23	77
24	76
25	75
26	75
27	74
28	74
29	74
30	73

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 99% 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 (%)	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1
Oppressive (%)	99	99	99	99	99	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	99	99

	Muggy (%)	Oppressive (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	0	100
13	0	100
14	0	100
15	0	100
16	0	100
17	0	100
18	0	100
19	0	100
20	0	100
21	0	100
22	0	100
23	0	100
24	0	100
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 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)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5
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	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	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 6:45 AM to 6:42 AM, and sunset from 6:55 PM to 6:38 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	12.1	12.1	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	12.0	11.9	11.9	11.9
Sunrise (AM)	6:45	6:45	6:45	6:45	6:45	6:45	6:44	6:44	6:44	6:44	6:44	6:44	6:44	6:43	6:43	6:43	6:43	6:43	6:43	6:43	6:43	6:42	6:42	6:42	6:42	6:42	6:42	6:42	6:42	6:42
Sunset (PM)	6:55	6:54	6:54	6:53	6:53	6:52	6:51	6:51	6:50	6:50	6:49	6:48	6:48	6:47	6:47	6:46	6:45	6:45	6:44	6:44	6:43	6:42	6:42	6:41	6:41	6:40	6:39	6:39	6:38	6:38

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.2	6:45	6:55
2	12.2	6:45	6:54
3	12.1	6:45	6:54
4	12.1	6:45	6:53
5	12.1	6:45	6:53
6	12.1	6:45	6:52
7	12.1	6:44	6:51
8	12.1	6:44	6:51
9	12.1	6:44	6:50
10	12.1	6:44	6:50
11	12.1	6:44	6:49
12	12.1	6:44	6:48
13	12.1	6:44	6:48
14	12.1	6:43	6:47
15	12.1	6:43	6:47
16	12.0	6:43	6:46
17	12.0	6:43	6:45
18	12.0	6:43	6:45
19	12.0	6:43	6:44
20	12.0	6:43	6:44
21	12.0	6:43	6:43
22	12.0	6:42	6:42
23	12.0	6:42	6:42
24	12.0	6:42	6:41
25	12.0	6:42	6:41
26	12.0	6:42	6:40
27	12.0	6:42	6:39
28	11.9	6:42	6:39
29	11.9	6:42	6:38
30	11.9	6:42	6:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.29 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 6.1 kWh/m² in February across the year — September's 4.29 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)	4.0	4.1	4.1	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.3	4.3	4.4	4.4	4.4	4.4	4.4	4.4	4.5	4.5	4.5	4.5	4.5	4.5
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	4.0	Bright
2	4.1	Bright
3	4.1	Bright
4	4.1	Bright
5	4.1	Bright
6	4.1	Bright
7	4.1	Bright
8	4.2	Bright
9	4.2	Bright
10	4.2	Bright
11	4.2	Bright
12	4.2	Bright
13	4.3	Bright
14	4.3	Bright
15	4.3	Bright
16	4.3	Bright
17	4.3	Bright
18	4.3	Bright
19	4.4	Bright
20	4.4	Bright
21	4.4	Bright
22	4.4	Bright
23	4.4	Bright
24	4.4	Bright
25	4.5	Bright
26	4.5	Bright
27	4.5	Bright
28	4.5	Bright
29	4.5	Bright
30	4.5	Bright

Planning a trip in September

Hazard calendar for Ouessé

In seasonPeak

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

Ouessé's monsoon runs May–October, when most of the year's rain falls.

Ouessé sees seasonal dust haze (January–April), heaviest in February.

Monsoon

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Ouessé?

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

3.2

Sightseeing

7th-best month of the year

4.4

Beach & pool

12th-best month of the year

September is a weaker month for outdoor sightseeing in Ouessé.

What to pack for Ouessé in September

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

In September, Ouessé sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

UV index in Ouessé in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ouessé peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 7 (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)	8	9	13	13	11	11	11	11	12	12	9	7
Level	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	8	Very high
Feb	9	Very high
Mar	13	Extreme
Apr	13	Extreme
May	11	Extreme
Jun	11	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	12	Extreme
Oct	12	Extreme
Nov	9	Very high
Dec	7	Very high

Air quality in Ouessé 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 Ouessé is worst in February — around 85 µg/m³ PM2.5 (unhealthy), about 4.6× the cleanest month (August, 19 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)	82	85	45	39	24	20	19	19	20	30	38	67
Level	Unhealthy	Unhealthy	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	82	Unhealthy
Feb	85	Unhealthy
Mar	45	Poor
Apr	39	Poor
May	24	Moderate
Jun	20	Moderate
Jul	19	Moderate
Aug	19	Moderate
Sep	20	Moderate
Oct	30	Moderate
Nov	38	Poor
Dec	67	Unhealthy

Location & terrain

Where is Ouessé?

Ouessé sits at 8.5°N, 2.4°E, 231 m above sea level, in Benin. The nearest listed city is Tchaourou, 48 km away.

Topography around Ouessé

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

Within 3 km, the terrain around Ouessé has only modest variations in elevation — a maximum elevation change of 58 m around an average of 228 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 164 m; within 80 km, significant variations in elevation — a maximum elevation change of 522 m.

The land around Ouessé is covered by trees (40%) and shrubs (32%) within 3 km, shrubs (43%) and trees (35%) within 16 km, and trees (48%) and shrubs (35%) within 80 km.

3 km

58 m

trees 40%

16 km

164 m

shrubs 43%

80 km

522 m

trees 48%

treesshrubsgrasslandcroplandartificial surfaces

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

September weather nearby: Tchaourou 48 km · Savé 51 km · Banté 60 km · Glazoué 62 km · Savalou 80 km · Dassa-Zoumè 86 km · Parakou 97 km · Bassila 102 km

Benin travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type C / E; 220 V · 50 Hz
Prices: ≈ 34% of US; price level, 2025
GDP per capita: $1,658; 2025
Happiness: 4.4 / 10; World Happiness, 2025
Safe drinking water: 18%; of population, 2024
Homicide rate: 1.1; per 100k, 2017
Road deaths: 26.8; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Very low; EF EPI 406
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 Ouessé (8.4864°, 2.4287°, elevation 231 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	29	22
2	29	22
3	30	22
4	30	22
5	30	22
6	30	22
7	30	22
8	30	22
9	30	22
10	30	22
11	30	22
12	30	22
13	30	22
14	30	22
15	30	22
16	30	23
17	30	23
18	30	23
19	30	23
20	30	23
21	30	23
22	30	23
23	30	23
24	31	23
25	31	23
26	31	23
27	31	23
28	31	23
29	31	23
30	31	23

	Clearer (%)	Cloudier (%)
1	8	92
2	8	92
3	8	92
4	8	92
5	9	91
6	9	91
7	10	90
8	10	90
9	11	89
10	11	89
11	11	89
12	11	89
13	12	88
14	12	88
15	12	88
16	12	88
17	13	87
18	13	87
19	13	87
20	12	88
21	13	87
22	13	87
23	13	87
24	13	87
25	13	87
26	13	87
27	13	87
28	13	87
29	13	87
30	14	86

	Rain chance (%)
1	83
2	84
3	84
4	84
5	84
6	83
7	83
8	83
9	83
10	83
11	83
12	83
13	82
14	82
15	82
16	81
17	81
18	80
19	79
20	79
21	78
22	77
23	77
24	76
25	75
26	75
27	74
28	74
29	74
30	73

	Muggy (%)	Oppressive (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	0	100
13	0	100
14	0	100
15	0	100
16	0	100
17	0	100
18	0	100
19	0	100
20	0	100
21	0	100
22	0	100
23	0	100
24	0	100
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

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

	Clearer (%)	Cloudier (%)
1	8	92
2	8	92
3	8	92
4	8	92
5	9	91
6	9	91
7	10	90
8	10	90
9	11	89
10	11	89
11	11	89
12	11	89
13	12	88
14	12	88
15	12	88
16	12	88
17	13	87
18	13	87
19	13	87
20	12	88
21	13	87
22	13	87
23	13	87
24	13	87
25	13	87
26	13	87
27	13	87
28	13	87
29	13	87
30	14	86

	Rain chance (%)
1	83
2	84
3	84
4	84
5	84
6	83
7	83
8	83
9	83
10	83
11	83
12	83
13	82
14	82
15	82
16	81
17	81
18	80
19	79
20	79
21	78
22	77
23	77
24	76
25	75
26	75
27	74
28	74
29	74
30	73

	Muggy (%)	Oppressive (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	0	100
13	0	100
14	0	100
15	0	100
16	0	100
17	0	100
18	0	100
19	0	100
20	0	100
21	0	100
22	0	100
23	0	100
24	0	100
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

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

	Clearer (%)	Cloudier (%)
1	8	92
2	8	92
3	8	92
4	8	92
5	9	91
6	9	91
7	10	90
8	10	90
9	11	89
10	11	89
11	11	89
12	11	89
13	12	88
14	12	88
15	12	88
16	12	88
17	13	87
18	13	87
19	13	87
20	12	88
21	13	87
22	13	87
23	13	87
24	13	87
25	13	87
26	13	87
27	13	87
28	13	87
29	13	87
30	14	86

	Rain chance (%)
1	83
2	84
3	84
4	84
5	84
6	83
7	83
8	83
9	83
10	83
11	83
12	83
13	82
14	82
15	82
16	81
17	81
18	80
19	79
20	79
21	78
22	77
23	77
24	76
25	75
26	75
27	74
28	74
29	74
30	73

	Muggy (%)	Oppressive (%)
1	1	99
2	1	99
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	0	100
13	0	100
14	0	100
15	0	100
16	0	100
17	0	100
18	0	100
19	0	100
20	0	100
21	0	100
22	0	100
23	0	100
24	0	100
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99