Savalou weather in September

In September, Savalou sees average daytime highs of 30°C and overnight lows near 23°C, with 205 mm of rain across 23.5 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 1% 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 Savalou's 10th-clearest and 11th-windiest month. For the whole year in context, see Savalou's year-round climate.

Daytime high
30°
10th warmest
Overnight low
23°
5th coldest
Rainfall
205 mm
23.5 wet days
Daylight
12 hours
6:45 AM – 6:48 PM
Cloud cover
79%
10th clearest
Wind
6 km/h
11th windiest
Solar energy
4.4 kWh/m²
Travel score
3.2
out of 10

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 Savalou reaches about 30°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 28°C and 32°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Savalou

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.

Savalou 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 22°4111.63.8
Feb36° / 24°142.511.72.6
Mar36° / 25°53911.92.2
Apr34° / 25°971412.22.5
May33° / 24°1411912.42.7
Jun31° / 23°16322.412.53.0
Jul30° / 23°19424.412.43.3
Aug29° / 23°21423.712.33.5
Sep30° / 23°20523.5123.2
Oct32° / 23°1031611.83.5
Nov34° / 23°153.511.63.7
Dec34° / 22°40.911.53.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
2991
3991
4991
51090
61090
71090
81189
91189
101189
111288
121288
131288
141486
151486
161486
171585
181585
191684
201684
211684
221783
231783
241783
251783
261783
271783
281783
291783
301783

Chance of precipitation in September

Any precipitation

Savalou gets around 205 mm of rain over 23.5 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 78% and peaks near 83% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
183
283
383
483
583
683
783
883
983
1082
1182
1282
1381
1481
1580
1680
1779
1878
1977
2076
2175
2275
2374
2473
2572
2672
2771
2871
2970
3070

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.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11990
21990
31990
41990
51990
61990
71990
81990
91990
1001000
1101000
1201000
1301000
1401000
1501000
1601000
1701000
1801000
190991
200991
210991
220991
230991
240991
250991
260991
270991
280991
290991
300991

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.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 6:47 AM to 6:43 AM, and sunset from 6:56 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:476:56
212.16:476:56
312.16:476:55
412.16:476:55
512.16:476:54
612.16:476:54
712.16:466:53
812.16:466:52
912.16:466:52
1012.16:466:51
1112.16:466:51
1212.16:466:50
1312.16:466:49
1412.16:456:49
1512.16:456:48
1612.06:456:48
1712.06:456:47
1812.06:456:47
1912.06:456:46
2012.06:456:45
2112.06:446:45
2212.06:446:44
2312.06:446:44
2412.06:446:43
2512.06:446:42
2612.06:446:42
2712.06:446:41
2812.06:436:41
2911.96:436:40
3011.96:436:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.02 kWh/m² in March across the year — September's 4.4 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Savalou

In seasonPeak

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

Savalou's monsoon runs April–October, when most of the year's rain falls.

Savalou 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 Savalou?

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 Savalou.

What to pack for Savalou in September

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

In September, Savalou sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

UV index in Savalou 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 Savalou peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 24UV 13Dec 20UV 7
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov9Very high
Dec7High

Air quality in Savalou 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 Savalou 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).

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 984 µg/m³Aug 1219 µg/m³
PM2.5 (µg/m³)Level
Jan82Unhealthy
Feb85Unhealthy
Mar45Poor
Apr39Poor
May24Moderate
Jun20Moderate
Jul19Moderate
Aug19Moderate
Sep20Moderate
Oct30Moderate
Nov38Poor
Dec67Unhealthy
Location & terrain

Where is Savalou?

Savalou sits at 7.9°N, 2.0°E, 181 m above sea level, in Benin. The nearest listed city is Glazoué, 28 km away.

BantéSavéDjidjaOuesséKpozounAbomey

Topography around Savalou

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

Within 3 km, the terrain around Savalou has significant variations in elevation — a maximum elevation change of 428 m around an average of 188 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 453 m; within 80 km, significant variations in elevation — a maximum elevation change of 521 m.

The land around Savalou is covered by trees (46%) and shrubs (27%) within 3 km, trees (40%) and shrubs (39%) within 16 km, and shrubs (47%) and trees (31%) within 80 km.

3 km
428 m
16 km
453 m
80 km
521 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Glazoué 28 km · Dassa-Zoumè 30 km · Banté 55 km · Savé 57 km · Djidja 65 km · Ouessé 80 km · Kpozoun 82 km · Abomey 83 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 Savalou (7.9281°, 1.9756°, elevation 181 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).