Banjul weather in September

In September, Banjul sees average daytime highs of 30°C and overnight lows near 26°C, with 190 mm of rain across 20.2 wet days and about 12.1 hours of daylight. It is the 7th-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 9% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Banjul's 11th-clearest and 11th-windiest month. For the whole year in context, see Banjul's year-round climate.

Daytime high
30°
7th warmest
Overnight low
26°
10th coldest
Rainfall
190 mm
20.2 wet days
Daylight
12 h 06 min
6:58 AM – 7:03 PM
Cloud cover
74%
11th clearest
Wind
10 km/h
11th windiest
Solar energy
5.07 kWh/m²
Travel score
3.7
out of 10

Banjul is capital of The Gambia.

Density
3,055/km²
people per km²
Founded
1816

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 30°C through the month.

A typical September day in Banjul reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273126
283126
293126
303126

How September really feels in Banjul

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.

Banjul weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°20.211.36.8
Feb30° / 21°10.111.66.2
Mar31° / 21°00.111.95.9
Apr30° / 22°0012.36.4
May30° / 23°10.212.66.8
Jun30° / 25°122.112.86.2
Jul30° / 26°13014.712.74.5
Aug29° / 26°25423.512.43.5
Sep30° / 26°19020.212.13.7
Oct31° / 26°568.411.74.6
Nov32° / 24°20.511.45.1
Dec30° / 21°20.211.26.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11684
21783
31882
41981
51981
62080
72278
82278
92377
102575
112575
122674
132872
142872
152971
163169
173169
183268
193268
203367
213466
223466
233565
243664
253763
263862
274060
284060
294258
304456

Chance of precipitation in September

Any precipitation

Banjul gets around 190 mm of rain over 20.2 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 67% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
178
278
377
476
576
675
774
873
973
1072
1171
1271
1370
1469
1568
1667
1767
1866
1965
2064
2163
2262
2361
2459
2558
2656
2755
2853
2952
3050

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the miserable band about 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11189
21189
31189
41189
51189
61189
71090
81090
91090
10991
11991
12991
13991
14892
15892
16892
17892
18892
19793
20793
21793
22793
23694
24694
25694
26694
27694
28694
29694
30694

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
311calm
411calm
511calm
611calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 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 24 minutes over September. Sunrise moves from 6:58 AM to 6:59 AM, and sunset from 7:14 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:587:14
212.36:587:13
312.26:587:13
412.26:587:12
512.26:587:11
612.26:587:10
712.26:587:10
812.26:587:09
912.26:587:08
1012.26:587:07
1112.16:587:07
1212.16:587:06
1312.16:587:05
1412.16:587:04
1512.16:587:04
1612.16:587:03
1712.16:587:02
1812.06:587:01
1912.06:587:01
2012.06:587:00
2112.06:586:59
2212.06:596:58
2312.06:596:58
2412.06:596:57
2512.06:596:56
2611.96:596:55
2711.96:596:55
2811.96:596:54
2911.96:596:53
3011.96:596:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.74 kWh/m² to a high of 7.18 kWh/m² in April across the year — September's 5.07 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
Planning a trip in September

Hazard calendar for Banjul

In seasonPeak

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

Banjul sits in the Atlantic hurricane belt; the season peaks August–October.

Banjul's monsoon runs July–September, when most of the year's rain falls.

Banjul sees seasonal dust haze (February–August), heaviest in June.

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

Is September a good time to visit Banjul?

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

3.7
Sightseeing
11th-best month of the year
5.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Banjul.

What to pack for Banjul in September

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

In September, Banjul sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Banjul in September

The nearest coast averages about 29°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 20 km away) is warmest in October at about 29°C and coldest in March near 20°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb21Refreshing
Mar20Refreshing
Apr21Refreshing
May23Refreshing
Jun26Warm
Jul28Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov28Warm
Dec24Refreshing

UV index in Banjul 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 Banjul peaks around March 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 19UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7Very high

Air quality in Banjul 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 Banjul is worst in February — around 98 µg/m³ PM2.5 (unhealthy), about 4.2× the cleanest month (August, 24 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1397 µg/m³Aug 2024 µg/m³
PM2.5 (µg/m³)Level
Jan89Unhealthy
Feb98Unhealthy
Mar80Unhealthy
Apr61Unhealthy
May52Poor
Jun60Unhealthy
Jul36Poor
Aug24Moderate
Sep29Moderate
Oct50Poor
Nov64Unhealthy
Dec84Unhealthy
Location & terrain

Where is Banjul?

Banjul sits at 13.5°N, 16.6°W, 5 m above sea level, in Gambia. The nearest listed city is New Jeshwang, 9.0 km away.

Topography around Banjul

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

Within 3 km, the terrain around Banjul has only modest variations in elevation — a maximum elevation change of 11 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 38 m; within 80 km, only modest variations in elevation — a maximum elevation change of 53 m.

The land around Banjul is covered by water (76%) within 3 km, water (53%) within 16 km, and water (37%) within 80 km.

3 km
11 m
16 km
38 m
80 km
53 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: New Jeshwang 9.0 km · Abuko 10 km · Faji Kunda 10 km · Kanifing 10 km · Talinding 11 km · Ibo Town 11 km · Serekunda 11 km · Bakau 12 km

Gambia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type G
230 V · 50 Hz
Prices
≈ 25% of US
price level, 2025
GDP per capita
$919
2025
Happiness
4.3 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Road deaths
29.6
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 96%Christian 4%other or none 0%

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 Banjul (13.4527°, -16.578°, elevation 5 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).