New Achimota weather in September

In September, New Achimota sees average daytime highs of 29°C and overnight lows near 23°C, with 103 mm of rain across 21.1 wet days and about 12 hours of daylight. It is the 10th-warmest and 3rd-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 3% 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 New Achimota's 9th-clearest and 5th-windiest month. For the whole year in context, see New Achimota's year-round climate.

Daytime high
29°
10th warmest
Overnight low
23°
3rd coldest
Rainfall
103 mm
21.1 wet days
Daylight
12 hours
5:54 AM – 5:56 PM
Cloud cover
77%
9th clearest
Wind
10 km/h
5th windiest
Solar energy
4.67 kWh/m²
Travel score
3.9
out of 10

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 New Achimota 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 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)
12823
22823
32823
42823
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924

How September really feels in New Achimota

Once humidity and wind are folded in, September averages 18 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
18
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.

New Achimota 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
Jan32° / 24°277.311.74.3
Feb33° / 25°379.311.83.6
Mar33° / 25°5713.3123.2
Apr32° / 25°6513.612.13.3
May31° / 25°10819.912.33.2
Jun29° / 24°15222.212.33.7
Jul28° / 23°8517.612.34.7
Aug28° / 23°5815.612.25.0
Sep29° / 23°10321.1123.9
Oct30° / 24°10320.811.93.7
Nov31° / 24°5515.411.73.8
Dec32° / 24°328.711.74.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21387
31387
41486
51585
61585
71684
81684
91684
101684
111783
121783
131783
141981
151981
161981
171981
182080
192179
202179
212278
222278
232377
242476
252575
262575
272674
282773
292872
302872

Chance of precipitation in September

Any precipitation

New Achimota gets around 103 mm of rain over 21.1 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 69% and peaks near 73% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
165
266
366
467
567
667
767
868
968
1068
1168
1268
1368
1468
1568
1669
1769
1870
1970
2071
2171
2271
2372
2472
2572
2672
2772
2872
2973
3073

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 (%)
13970
22980
32980
42980
52980
62980
72980
82980
92980
102980
112980
122980
132980
142980
152980
162980
172980
181990
191990
201990
211981
221981
231981
240991
250991
260991
270991
280991
290982
300982

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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
612.15:576:02
712.15:566:01
812.15:566:00
912.15:566:00
1012.15:565:59
1112.15:565:59
1212.15:555:58
1312.05:555:58
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
2712.05:525:51
2812.05:525:50
2912.05:525:50
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 4.67 kWh/m².

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 5.75 kWh/m² in March across the year — September's 4.67 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for New Achimota

In seasonPeak

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

New Achimota 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 New Achimota?

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

3.9
Sightseeing
5th-best month of the year
5.0
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in New Achimota.

What to pack for New Achimota in September

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

In September, New Achimota sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near New Achimota 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 31 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
Sep24Warm
Oct27Warm
Nov28Tropical
Dec28Tropical

UV index in New Achimota 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 New Achimota peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 24UV 13Dec 17UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in New Achimota 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 New Achimota 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 New Achimota?

New Achimota sits at 5.6°N, 0.3°W, 59 m above sea level, in Ghana. The nearest listed city is Dome, 4.0 km away.

Topography around New Achimota

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

Within 3 km, the terrain around New Achimota has only modest variations in elevation — a maximum elevation change of 140 m around an average of 50 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 380 m; within 80 km, large variations in elevation — a maximum elevation change of 838 m.

The land around New Achimota is covered by artificial surfaces (97%) within 3 km, artificial surfaces (63%) within 16 km, and trees (43%) and water (30%) within 80 km.

3 km
140 m
16 km
380 m
80 km
838 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Dome 4.0 km · Taifa 4.0 km · Awoshi 5.0 km · Gbawe 8.0 km · Accra 10 km · Osu 11 km · Atsiaman 11 km · Medina Estates 11 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 New Achimota (5.6266°, -0.2581°, elevation 59 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).