Bitam weather in September

In September, Bitam sees average daytime highs of 28°C and overnight lows near 21°C, with 174 mm of rain across 26.2 wet days and about 12 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Bitam's 10th-clearest and 2nd-windiest month. For the whole year in context, see Bitam's year-round climate.

Daytime high
28°
9th warmest
Overnight low
21°
5th coldest
Rainfall
174 mm
26.2 wet days
Daylight
12 hours
6:08 AM – 6:09 PM
Cloud cover
83%
10th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.35 kWh/m²
Travel score
3.4
out of 10

Bitam is town in northern Gabon.

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 28°C through the month.

A typical September day in Bitam reaches about 28°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162821
172821
182821
192821
202821
212821
222821
232821
242821
252921
262921
272921
282921
292921
302921

How September really feels in Bitam

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Bitam weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 21°5812.711.94.5
Feb30° / 21°7813.611.94.1
Mar30° / 21°16523.1123.3
Apr30° / 21°19025.5123.0
May29° / 21°15525.712.13.3
Jun28° / 21°12822.512.14.1
Jul27° / 20°10419.612.14.8
Aug28° / 20°10219.612.14.7
Sep28° / 21°17426.2123.4
Oct28° / 21°21627.9123.3
Nov29° / 20°17825.111.93.5
Dec29° / 21°7414.611.94.6

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 6% of September, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5694
6694
7694
8694
9694
10694
11694
12793
13793
14793
15793
16793
17793
18793
19793
20793
21793
22793
23793
24694
25694
26694
27694
28694
29694
30595

Chance of precipitation in September

Any precipitation

Bitam gets around 174 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 88% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
179
281
382
483
584
685
785
886
986
1087
1187
1288
1388
1489
1589
1690
1790
1890
1990
2090
2190
2290
2390
2490
2590
2690
2790
2890
2990
3090

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1964
2955
3955
4946
5946
6937
7937
8928
9928
10928
11919
12919
139010
149010
158911
168911
178911
188812
198812
208713
218713
228713
238614
248614
258515
268515
278416
288317
298317
308218

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 6:13 AM to 6:04 AM, and sunset from 6:15 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:136:15
212.06:126:15
312.06:126:14
412.06:126:14
512.06:116:13
612.06:116:13
712.06:116:12
812.06:106:12
912.06:106:12
1012.06:106:11
1112.06:106:11
1212.06:096:10
1312.06:096:10
1412.06:096:10
1512.06:086:09
1612.06:086:09
1712.06:086:08
1812.06:076:08
1912.06:076:07
2012.06:076:07
2112.06:066:07
2212.06:066:06
2312.06:066:06
2412.06:066:05
2512.06:056:05
2612.06:056:04
2712.06:056:04
2812.06:046:04
2912.06:046:03
3012.06:046:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.35 kWh/m².

For context, solar energy here swings from a low near 3.99 kWh/m² to a high of 5.03 kWh/m² in March across the year — September's 4.35 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Bitam?

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

3.4
Sightseeing
8th-best month of the year
4.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Bitam.

What to pack for Bitam in September

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

In September, Bitam sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

UV index in Bitam 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 Bitam peaks around March 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highMar 21UV 14Dec 16UV 10
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov11Extreme
Dec9Very high

Air quality in Bitam 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 Bitam is worst in February — around 53 µg/m³ PM2.5 (poor), about 6.7× the cleanest month (September, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateFeb 1351 µg/m³Sep 218 µg/m³
PM2.5 (µg/m³)Level
Jan40Poor
Feb53Poor
Mar32Moderate
Apr22Moderate
May15Moderate
Jun16Moderate
Jul16Moderate
Aug13Moderate
Sep8Good
Oct9Good
Nov16Moderate
Dec32Moderate
Location & terrain

Where is Bitam?

Bitam sits at 2.1°N, 11.5°E, 575 m above sea level, in Gabon. The nearest listed city is Ebebiyin, 21 km away.

AmbamOyemCiudad de la Paz

Topography around Bitam

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

Within 3 km, the terrain around Bitam has only modest variations in elevation — a maximum elevation change of 112 m around an average of 586 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 233 m; within 80 km, large variations in elevation — a maximum elevation change of 610 m.

The land around Bitam is covered by trees (74%) within 3 km, trees (98%) within 16 km, and trees (100%) within 80 km.

3 km
112 m
16 km
233 m
80 km
610 m
treesgrasslandartificial surfaces
September weather nearby: Ebebiyin 21 km · Ambam 42 km · Oyem 54 km · Ciudad de la Paz 92 km · Ébolowa 100 km · Sangmélima 109 km · Lolodorf 154 km · Mbalmayo 160 km

Gabon travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$8,263
2025
Happiness
5.2 / 10
World Happiness, 2025
Road deaths
23.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 46%Roman Catholic 30%Muslim 11%none 7%

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 Bitam (2.076°, 11.5007°, elevation 575 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).