Lambaréné weather in September

In September, Lambaréné sees average daytime highs of 29°C and overnight lows near 23°C, with 81 mm of rain across 13.9 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-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 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 Lambaréné's 7th-clearest and 1st-windiest month. For the whole year in context, see Lambaréné's year-round climate.

Daytime high
29°
9th warmest
Overnight low
23°
4th coldest
Rainfall
81 mm
13.9 wet days
Daylight
12 hours
6:13 AM – 6:13 PM
Cloud cover
84%
7th clearest
Wind
7 km/h
1st windiest
Solar energy
3.57 kWh/m²
Travel score
4.5
out of 10

Lambaréné is town in 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 29°C through the month.

A typical September day in Lambaréné 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 28°C and 31°C. Set against its neighbours, September runs about 2°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12823
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303024

How September really feels in Lambaréné

Once humidity and wind are folded in, September averages 21 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
21
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.

Lambaréné weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°23428.2122.6
Feb31° / 24°20524.5122.5
Mar31° / 24°25128.2122.4
Apr31° / 24°22926.4122.5
May31° / 24°19525.2123.0
Jun28° / 23°437.4125.8
Jul27° / 22°122.5126.8
Aug28° / 22°133.1126.6
Sep29° / 23°8113.9124.5
Oct30° / 24°27028.3122.8
Nov30° / 24°35329.6122.6
Dec30° / 24°30429.5122.6

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 4% of September, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8397
9397
10397
11397
12397
13496
14496
15496
16496
17496
18595
19595
20595
21595
22694
23694
24694
25793
26793
27793
28793
29892
30892

Chance of precipitation in September

Any precipitation

Lambaréné gets around 81 mm of rain over 13.9 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 47% and peaks near 75% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
122
223
324
426
527
628
730
832
933
1035
1137
1239
1341
1443
1545
1647
1750
1852
1954
2056
2158
2259
2361
2463
2565
2667
2769
2871
2973
3075

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 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
133670
231690
329710
426740
524760
622780
720800
818820
916840
1014860
1113870
1211890
1310900
149910
158920
167930
176940
186940
195950
205950
215941
225941
234951
244942
254942
264933
273943
283943
293934
302944

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

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
157calm
167calm
177calm
187calm
197calm
207calm
217calm
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 6:19 AM to 6:08 AM, and sunset from 6:18 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:196:18
212.06:196:18
312.06:186:18
412.06:186:17
512.06:186:17
612.06:176:17
712.06:176:16
812.06:176:16
912.06:166:16
1012.06:166:15
1112.06:156:15
1212.06:156:15
1312.06:156:14
1412.06:146:14
1512.06:146:14
1612.06:136:13
1712.06:136:13
1812.06:136:13
1912.06:126:12
2012.06:126:12
2112.06:126:11
2212.06:116:11
2312.06:116:11
2412.06:106:10
2512.06:106:10
2612.06:106:10
2712.06:096:09
2812.06:096:09
2912.06:096:09
3012.06:086:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.57 kWh/m².

For context, solar energy here swings from a low near 3.06 kWh/m² to a high of 4.83 kWh/m² in March across the year — September's 3.57 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.2Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.4Moderate
73.4Moderate
83.4Moderate
93.4Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Lambaréné

In seasonPeak

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

Lambaréné's rainy season runs October–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Lambaréné?

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

4.5
Sightseeing
4th-best month of the year
5.8
Beach & pool
4th-best month of the year

September is a reasonable time to visit Lambaréné for sightseeing.

What to pack for Lambaréné in September

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

In September, Lambaréné sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 14 days see rain.

light clothesrain gear

UV index in Lambaréné 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 Lambaréné peaks around March 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 highExtremeMar 20UV 14Jun 19UV 8
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun8Very high
Jul9Very high
Aug9Very high
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec10Very high

Air quality in Lambaréné 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 Lambaréné is worst in February — around 30 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (October, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateFeb 1329 µg/m³Oct 1812 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb30Moderate
Mar21Moderate
Apr17Moderate
May18Moderate
Jun26Moderate
Jul26Moderate
Aug22Moderate
Sep15Moderate
Oct11Good
Nov14Moderate
Dec20Moderate
Location & terrain

Where is Lambaréné?

Lambaréné sits at 0.7°S, 10.2°E, 26 m above sea level, in Gabon. The nearest listed city is Oyam, 74 km away.

OyamNtoumOwendoLibrevilleMouilaPort-GentilAkandaKoulamoutou

Topography around Lambaréné

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

Within 3 km, the terrain around Lambaréné has only modest variations in elevation — a maximum elevation change of 75 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 331 m; within 80 km, large variations in elevation — a maximum elevation change of 876 m.

The land around Lambaréné is covered by trees (54%) and water (22%) within 3 km, trees (90%) within 16 km, and trees (94%) within 80 km.

3 km
75 m
16 km
331 m
80 km
876 m
treesgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Oyam 74 km · Ntoum 132 km · Owendo 137 km · Libreville 150 km · Mouila 158 km · Port-Gentil 162 km · Akanda 177 km · Koulamoutou 252 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 Lambaréné (-0.7001°, 10.2406°, elevation 26 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).