Koforidua weather in September

In September, Koforidua sees average daytime highs of 29°C and overnight lows near 22°C, with 168 mm of rain across 25.9 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 29°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 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Koforidua's 9th-clearest and 7th-windiest month. For the whole year in context, see Koforidua's year-round climate.

Daytime high
29°
10th warmest
Overnight low
22°
3rd coldest
Rainfall
168 mm
25.9 wet days
Daylight
12 hours
5:54 AM – 5:56 PM
Cloud cover
80%
9th clearest
Wind
8 km/h
7th windiest
Solar energy
4.31 kWh/m²
Travel score
3.4
out of 10

Koforidua is capital city of Eastern Region.

Founded
1875

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 Koforidua reaches about 29°C in the afternoon and slips back to 22°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 30°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)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132922
142922
152922
162922
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Koforidua

Once humidity and wind are folded in, September averages 9 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
9
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.

Koforidua 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
Jan32° / 23°408.211.74.3
Feb33° / 24°591211.83.4
Mar32° / 24°10319.3123.0
Apr32° / 24°11521.112.13.0
May31° / 23°16725.512.32.9
Jun29° / 23°19325.712.33.4
Jul28° / 22°1322212.34.3
Aug28° / 22°10320.812.24.5
Sep29° / 22°16825.9123.4
Oct30° / 23°15325.311.93.3
Nov31° / 23°8118.611.73.7
Dec31° / 23°4210.311.74.5

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 11% of September, with mostly cloudy or overcast conditions the remaining 87%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2892
3991
4991
5991
6991
7991
8991
9991
101090
111090
121090
131090
141189
151189
161189
171288
181387
191486
201486
211585
221684
231684
241783
251882
261882
271981
281981
292080
302080

Chance of precipitation in September

Any precipitation

Koforidua gets around 168 mm of rain over 25.9 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 86% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
183
283
384
484
585
685
785
885
985
1085
1185
1285
1385
1485
1585
1685
1785
1886
1986
2086
2186
2286
2387
2487
2587
2687
2787
2887
2987
3087

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 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11090
21090
3991
4991
5892
6892
7892
8793
9793
10793
11793
12793
13694
14694
15694
16595
17595
18595
19496
20496
21496
22397
23397
24397
25298
26298
27298
28199
29199
30199

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:57 AM to 5:52 AM, and sunset from 6:04 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:576:04
212.15:576:04
312.15:576:03
412.15:576:03
512.15:576:02
612.15:566:02
712.15:566:01
812.15:566:01
912.15:566:00
1012.15:566:00
1112.15:555:59
1212.15:555:59
1312.15:555:58
1412.05:555:57
1512.05:555:57
1612.05:545:56
1712.05:545:56
1812.05:545:55
1912.05:545:55
2012.05:545:54
2112.05:535:54
2212.05:535:53
2312.05:535:53
2412.05:535:52
2512.05:535:52
2612.05:525:51
2712.05:525:50
2812.05:525:50
2912.05:525:49
3012.05:525:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.31 kWh/m².

For context, solar energy here swings from a low near 3.99 kWh/m² to a high of 5.61 kWh/m² in March across the year — September's 4.31 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Koforidua

In seasonPeak

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

Koforidua 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 Koforidua?

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

3.4
Sightseeing
6th-best month of the year
4.2
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Koforidua.

What to pack for Koforidua in September

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

In September, Koforidua sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

Sea temperature near Koforidua in September

The nearest coast averages about 25°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 67 km away) is warmest in May at about 29°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
May29Tropical
Jun27Warm
Jul24Warm
Aug23Refreshing
Sep25Warm
Oct27Warm
Nov28Tropical
Dec28Warm

UV index in Koforidua 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 Koforidua peaks around April 10 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 highApr 10UV 13Dec 17UV 9
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Koforidua 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 Koforidua is worst in January — around 97 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 22 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1695 µg/m³Aug 1922 µg/m³
PM2.5 (µg/m³)Level
Jan97Unhealthy
Feb76Unhealthy
Mar42Poor
Apr38Poor
May26Moderate
Jun27Moderate
Jul24Moderate
Aug22Moderate
Sep23Moderate
Oct32Moderate
Nov40Poor
Dec78Unhealthy
Location & terrain

Where is Koforidua?

Koforidua sits at 6.1°N, 0.3°W, 172 m above sea level, in Ghana. The nearest listed city is Suhum, 22 km away.

AdentaAtsiamanAnyinamTaifa

Topography around Koforidua

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

Within 3 km, the terrain around Koforidua has significant variations in elevation — a maximum elevation change of 332 m around an average of 216 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 586 m; within 80 km, large variations in elevation — a maximum elevation change of 838 m.

The land around Koforidua is covered by artificial surfaces (54%) and trees (39%) within 3 km, trees (79%) within 16 km, and trees (48%) within 80 km.

3 km
332 m
16 km
586 m
80 km
838 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Suhum 22 km · Aburi 29 km · Nsawam 33 km · Begoro 35 km · Adenta 44 km · Atsiaman 45 km · Anyinam 45 km · Taifa 48 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 Koforidua (6.0941°, -0.2591°, elevation 172 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).