Bata weather in September

In September, Bata sees average daytime highs of 27°C and overnight lows near 24°C, with 245 mm of rain across 27.6 wet days and about 12 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°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 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Bata's 11th-clearest and 4th-windiest month. For the whole year in context, see Bata's year-round climate.

Daytime high
27°
10th warmest
Overnight low
24°
3rd coldest
Rainfall
245 mm
27.6 wet days
Daylight
12 hours
6:15 AM – 6:16 PM
Cloud cover
86%
11th clearest
Wind
9 km/h
4th windiest
Solar energy
3.76 kWh/m²
Travel score
3.6
out of 10

Bata is most populous city in Equatorial Guinea.

Density
69/km²
people per km²
Founded
1851

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 27°C through the month.

A typical September day in Bata reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12723
22723
32723
42723
52723
62723
72723
82723
92723
102723
112723
122723
132723
142724
152724
162724
172724
182724
192724
202724
212724
222724
232724
242724
252724
262724
272724
282724
292724
302724

How September really feels in Bata

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.

Bata weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°16428.211.93.3
Feb29° / 25°16825.811.93.1
Mar29° / 25°23628.6122.9
Apr29° / 25°25628.1122.9
May29° / 25°26529.512.13.0
Jun27° / 24°17922.412.14.3
Jul26° / 23°11017.212.15.2
Aug26° / 23°9619.712.14.8
Sep27° / 24°24527.6123.6
Oct28° / 24°33530.7123.2
Nov28° / 24°32529.811.93.2
Dec28° / 24°21329.711.93.2

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 3% of September, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2496
3595
4595
5595
6595
7595
8595
9496
10496
11496
12496
13496
14397
15397
16397
17397
18298
19298
20298
21298
22298
23298
24298
25298
26298
27298
28298
29298
30298

Chance of precipitation in September

Any precipitation

Bata gets around 245 mm of rain over 27.6 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 92% and peaks near 97% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
177
279
380
482
583
684
786
887
988
1089
1190
1291
1392
1493
1594
1695
1796
1896
1997
2097
2197
2297
2397
2497
2597
2697
2797
2897
2997
3097

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 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
13970
23970
33970
42980
52980
62980
71990
81990
91990
101990
111990
1201000
1301000
1401000
1501000
1601000
1701000
1801000
1901000
2001000
2101000
2201000
2301000
2401000
2501000
2601000
2701000
280991
290991
300991

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 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
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:20 AM to 6:11 AM, and sunset from 6:22 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:206:22
212.06:196:21
312.06:196:21
412.06:196:21
512.06:186:20
612.06:186:20
712.06:186:19
812.06:176:19
912.06:176:19
1012.06:176:18
1112.06:176:18
1212.06:166:17
1312.06:166:17
1412.06:166:16
1512.06:156:16
1612.06:156:16
1712.06:156:15
1812.06:146:15
1912.06:146:14
2012.06:146:14
2112.06:136:13
2212.06:136:13
2312.06:136:13
2412.06:126:12
2512.06:126:12
2612.06:126:11
2712.06:126:11
2812.06:116:11
2912.06:116:10
3012.06:116:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.76 kWh/m².

For context, solar energy here swings from a low near 3.61 kWh/m² to a high of 4.8 kWh/m² in March across the year — September's 3.76 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.7Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.7Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Bata?

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

3.6
Sightseeing
4th-best month of the year
3.7
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Bata.

What to pack for Bata in September

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

In September, Bata sees daytime highs around 27°C and nights near 24°C. Pack rain gear. Worth having: light clothes. About 28 days see rain.

rain gearlight clothes

Sea temperature near Bata in September

The nearest coast averages about 26°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 16 km away) is warmest in March at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Bata 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 Bata peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 highExtremeVery highMar 24UV 13Dec 18UV 9
UV index (midday)Level
Jan10Extreme
Feb11Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec9Very high

Air quality in Bata 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 Bata is worst in February — around 39 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (October, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateFeb 1238 µg/m³Oct 1210 µg/m³
PM2.5 (µg/m³)Level
Jan34Moderate
Feb39Poor
Mar27Moderate
Apr20Moderate
May17Moderate
Jun21Moderate
Jul22Moderate
Aug17Moderate
Sep11Good
Oct10Good
Nov15Moderate
Dec27Moderate
Location & terrain

Where is Bata?

Bata sits at 1.9°N, 9.8°E, 13 m above sea level, in Equatorial Guinea. The nearest listed city is Kribi, 120 km away.

KribiCiudad de la PazEbebiyinAmbam

Topography around Bata

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

Within 3 km, the terrain around Bata has only modest variations in elevation — a maximum elevation change of 40 m around an average of 9 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 380 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,211 m.

The land around Bata is covered by water (47%) and artificial surfaces (41%) within 3 km, water (49%) and trees (40%) within 16 km, and trees (67%) and water (31%) within 80 km.

3 km
40 m
16 km
380 m
80 km
1,211 m
treesgrasslandartificial surfaceswatermangroves
September weather nearby: Kribi 120 km · Ciudad de la Paz 121 km · Akanda 148 km · Ntoum 164 km · Libreville 167 km · Ebebiyin 177 km · Owendo 177 km · Ambam 178 km

Equatorial Guinea travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$6,615
2025
Road deaths
27.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Roman Catholic 88%Protestant 5%other 5%Muslim 2%

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 Bata (1.8639°, 9.7658°, elevation 13 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).