Foso weather in September

In September, Foso sees average daytime highs of 29°C and overnight lows near 23°C, with 167 mm of rain across 26.2 wet days and about 12 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°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 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Foso's 8th-clearest and 4th-windiest month. For the whole year in context, see Foso's year-round climate.

Daytime high
29°
10th warmest
Overnight low
23°
6th coldest
Rainfall
167 mm
26.2 wet days
Daylight
12 hours
5:59 AM – 6:00 PM
Cloud cover
81%
8th clearest
Wind
7 km/h
4th windiest
Solar energy
4.09 kWh/m²
Travel score
3.2
out of 10

Foso is town and Municipal Capital in Central Region, Ghana.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Foso reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
303023

How September really feels in Foso

Once humidity and wind are folded in, September averages 23 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
23
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.

Foso weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°379.311.74.2
Feb33° / 24°6012.611.83.2
Mar33° / 24°12021.3122.7
Apr32° / 24°14122.812.12.7
May31° / 23°20827.212.32.7
Jun29° / 23°22527.112.33.1
Jul28° / 22°14823.912.33.9
Aug28° / 22°10621.912.24.1
Sep29° / 23°16726.2123.2
Oct30° / 23°19227.711.92.9
Nov31° / 23°10720.411.73.4
Dec31° / 23°4510.911.74.4

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 9% of September, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5694
6793
7793
8793
9793
10892
11892
12892
13892
14892
15991
16991
17991
18991
191090
201090
211090
221090
231189
241189
251189
261288
271288
281387
291387
301486

Chance of precipitation in September

Any precipitation

Foso gets around 167 mm of rain over 26.2 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 87% and peaks near 92% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
184
285
385
485
585
685
785
885
985
1085
1185
1285
1385
1485
1585
1686
1786
1887
1987
2088
2188
2289
2389
2490
2590
2691
2791
2892
2992
3092

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 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
15950
25950
34960
44960
54960
64960
74960
84960
94960
104960
113970
123970
133970
143970
153970
163970
172980
182980
192980
202980
211990
221990
231990
241990
251990
261981
270991
280991
290991
300991

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:02 AM to 5:56 AM, and sunset from 6:08 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:026:08
212.16:016:08
312.16:016:07
412.16:016:07
512.16:016:06
612.16:016:06
712.16:006:05
812.16:006:05
912.16:006:04
1012.16:006:04
1112.16:006:03
1212.15:596:03
1312.05:596:02
1412.05:596:01
1512.05:596:01
1612.05:596:00
1712.05:586:00
1812.05:585:59
1912.05:585:59
2012.05:585:58
2112.05:575:58
2212.05:575:57
2312.05:575:57
2412.05:575:56
2512.05:575:56
2612.05:575:55
2712.05:565:55
2812.05:565:54
2912.05:565:54
3012.05:565:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.09 kWh/m².

For context, solar energy here swings from a low near 3.76 kWh/m² to a high of 5.24 kWh/m² in March across the year — September's 4.09 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Foso

In seasonPeak

None of Foso's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is September a good time to visit Foso?

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

3.2
Sightseeing
6th-best month of the year
4.2
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Foso.

What to pack for Foso in September

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

In September, Foso sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

Sea temperature near Foso in September

The nearest coast averages about 24°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 65 km away) is warmest in May at about 28°C and coldest in August near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May28Tropical
Jun27Warm
Jul24Warm
Aug23Refreshing
Sep24Warm
Oct26Warm
Nov28Tropical
Dec28Warm

UV index in Foso in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Foso peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 23UV 13Dec 17UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Foso 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 Foso is worst in January — around 79 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 18 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyJan 1878 µg/m³Aug 2318 µg/m³
PM2.5 (µg/m³)Level
Jan79Unhealthy
Feb72Unhealthy
Mar42Poor
Apr39Poor
May24Moderate
Jun22Moderate
Jul20Moderate
Aug18Moderate
Sep18Moderate
Oct24Moderate
Nov34Moderate
Dec67Unhealthy
Location & terrain

Where is Foso?

Foso sits at 5.7°N, 1.3°W, 148 m above sea level, in Ghana. The nearest listed city is Twifu Praso, 31 km away.

Assin FosoAkim OdaMankesimSaltpondDunkwaAkwatiaKade

Topography around Foso

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

Within 3 km, the terrain around Foso has only modest variations in elevation — a maximum elevation change of 92 m around an average of 158 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 224 m; within 80 km, large variations in elevation — a maximum elevation change of 772 m.

The land around Foso is covered by trees (69%) and artificial surfaces (25%) within 3 km, trees (94%) within 16 km, and trees (89%) within 80 km.

3 km
92 m
16 km
224 m
80 km
772 m
treesshrubsgrasslandartificial surfaceswater
September weather nearby: Twifu Praso 31 km · Assin Foso 40 km · Akim Oda 42 km · Mankesim 56 km · Saltpond 60 km · Dunkwa 61 km · Akwatia 65 km · Kade 66 km

Ghana travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$3,257
2025
Happiness
4.6 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
1.8
per 100k, 2022
Road deaths
25.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 540
Religion
Christian 71%Muslim 20%other 5%traditionalist 3%

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 Foso (5.7012°, -1.2866°, elevation 148 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).