Sinendé weather in September

In September, Sinendé sees average daytime highs of 31°C and overnight lows near 22°C, with 205 mm of rain across 22.7 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 7% 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 Sinendé's 10th-clearest and 12th-windiest month. For the whole year in context, see Sinendé's year-round climate.

Daytime high
31°
10th warmest
Overnight low
22°
6th coldest
Rainfall
205 mm
22.7 wet days
Daylight
12 h 06 min
6:43 AM – 6:46 PM
Cloud cover
74%
10th clearest
Wind
6 km/h
12th windiest
Solar energy
5.06 kWh/m²
Travel score
3.2
out of 10

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 Sinendé reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273222
283222
293222
303222

How September really feels in Sinendé

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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Sinendé 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 19°10.111.54.7
Feb35° / 22°20.511.73.1
Mar37° / 24°112.411.91.8
Apr36° / 25°47912.21.8
May34° / 24°11117.312.52.5
Jun32° / 23°13719.712.63.1
Jul30° / 22°21124.912.53.2
Aug29° / 22°28526.712.33.1
Sep31° / 22°20522.712.13.2
Oct33° / 22°6810.511.83.4
Nov35° / 21°20.411.53.5
Dec33° / 19°0011.44.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11486
21585
31585
41684
51684
61783
71783
81882
91981
102080
112080
122179
132278
142377
152476
162476
172674
182773
192872
202971
213070
223169
233268
243367
253565
263763
273862
283961
294060
304159

Chance of precipitation in September

Any precipitation

Sinendé gets around 205 mm of rain over 22.7 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 75% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
384
484
583
683
782
882
981
1080
1180
1279
1378
1477
1576
1675
1774
1873
1973
2072
2171
2270
2369
2468
2567
2667
2766
2865
2964
3063

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 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11990
201000
31990
41990
51990
61990
71990
81990
91990
101990
111990
121990
132980
142980
152980
162971
172971
182971
192971
202971
211981
221981
231981
241981
251981
261981
271981
282971
292980
302980

Wind in September

Winds average 6 km/h in September, the calmest month.

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

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:44 AM to 6:42 AM, and sunset from 6:56 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:446:56
212.26:446:56
312.26:446:55
412.26:446:54
512.26:446:54
612.26:446:53
712.16:446:52
812.16:446:52
912.16:446:51
1012.16:446:50
1112.16:446:50
1212.16:436:49
1312.16:436:48
1412.16:436:48
1512.16:436:47
1612.16:436:46
1712.06:436:46
1812.06:436:45
1912.06:436:45
2012.06:436:44
2112.06:436:43
2212.06:436:43
2312.06:436:42
2412.06:436:41
2512.06:426:41
2612.06:426:40
2711.96:426:39
2811.96:426:39
2911.96:426:38
3011.96:426:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 6.55 kWh/m² in March across the year — September's 5.06 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.3Bright
235.3Bright
245.3Bright
255.4Bright
265.4Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Sinendé

In seasonPeak

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

Sinendé's monsoon runs June–September, when most of the year's rain falls.

Sinendé sees seasonal dust haze (January–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 Sinendé?

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

3.2
Sightseeing
5th-best month of the year
4.6
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Sinendé.

What to pack for Sinendé in September

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

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

light clothesrain gearsun protection

UV index in Sinendé 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 Sinendé peaks around April 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 18UV 12Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar10Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Sinendé 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 Sinendé is worst in February — around 86 µg/m³ PM2.5 (unhealthy), about 6.4× the cleanest month (August, 14 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1384 µg/m³Aug 1114 µg/m³
PM2.5 (µg/m³)Level
Jan72Unhealthy
Feb86Unhealthy
Mar62Unhealthy
Apr44Poor
May24Moderate
Jun19Moderate
Jul14Moderate
Aug14Moderate
Sep19Moderate
Oct33Moderate
Nov46Poor
Dec67Unhealthy
Location & terrain

Where is Sinendé?

Sinendé sits at 10.3°N, 2.4°E, 371 m above sea level, in Benin. The nearest listed city is Tobré, 32 km away.

PéhonkoKérouNdaliPèrèrèNikkiBanikoara

Topography around Sinendé

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

Within 3 km, the terrain around Sinendé has only modest variations in elevation — a maximum elevation change of 114 m around an average of 362 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 195 m; within 80 km, significant variations in elevation — a maximum elevation change of 361 m.

The land around Sinendé is covered by cropland (37%) and shrubs (31%) within 3 km, cropland (55%) and shrubs (29%) within 16 km, and cropland (47%) and shrubs (35%) within 80 km.

3 km
114 m
16 km
195 m
80 km
361 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Tobré 32 km · Bembèrèkè 34 km · Péhonko 43 km · Kérou 61 km · Ndali 66 km · Pèrèrè 90 km · Nikki 102 km · Banikoara 106 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
Muslim 28%Roman Catholic 26%Protestant 14%Vodoun 12%

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 Sinendé (10.3496°, 2.3791°, elevation 371 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).