Port-Gentil weather in December

In December, Port-Gentil sees average daytime highs of 27°C and overnight lows near 25°C, with 262 mm of rain across 28.4 wet days and about 12 hours of daylight. It is the 5th-warmest and 2nd-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 4% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Port-Gentil's 7th-clearest and 8th-windiest month. For the whole year in context, see Port-Gentil's year-round climate.

Daytime high
27°
5th warmest
Overnight low
25°
7th coldest
Rainfall
262 mm
28.4 wet days
Daylight
12 hours
6:20 AM – 6:22 PM
Cloud cover
79%
7th clearest
Wind
12 km/h
8th windiest
Solar energy
4.55 kWh/m²
Travel score
3.7
out of 10

Port-Gentil is city in Gabon.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Port-Gentil reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°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, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725
312725

How December really feels in Port-Gentil

Once humidity and wind are folded in, December 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

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

Port-Gentil weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°23027.4123.8
Feb28° / 26°16922.7123.9
Mar28° / 26°17624123.8
Apr28° / 26°16122124.1
May27° / 25°11017.3125.3
Jun25° / 24°183.8127.6
Jul24° / 23°82.2128.1
Aug24° / 23°72.2128.0
Sep25° / 24°348.6126.7
Oct26° / 25°14723.2124.5
Nov27° / 25°27528123.6
Dec27° / 25°26228.4123.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21783
31783
41783
51882
61882
71981
81981
91981
102080
112080
122080
132080
142080
152080
162080
172080
181981
191981
201981
211981
221882
231882
241882
251882
261882
271882
281882
291882
301882
311981

Chance of precipitation in December

Any precipitation

Port-Gentil gets around 262 mm of rain over 28.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 94% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
194
294
394
494
594
693
793
893
993
1093
1193
1292
1392
1492
1592
1692
1791
1891
1991
2090
2190
2289
2389
2489
2589
2688
2788
2888
2988
3088
3188

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1964
2964
3964
4973
5973
6973
7973
8964
9964
10964
11964
12955
13955
14955
15955
16946
17946
18946
19937
20937
21937
22937
23937
24937
25937
26937
27937
28937
29928
30928
31928

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 6:13 AM to 6:27 AM, and sunset from 6:16 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:136:16
212.06:146:16
312.06:146:17
412.06:156:17
512.06:156:17
612.06:156:18
712.06:166:18
812.06:166:19
912.06:176:19
1012.06:176:20
1112.06:186:20
1212.06:186:20
1312.06:186:21
1412.06:196:21
1512.06:196:22
1612.06:206:22
1712.06:206:23
1812.06:216:23
1912.06:216:24
2012.06:226:24
2112.06:226:25
2212.06:236:25
2312.06:236:26
2412.06:246:26
2512.06:246:27
2612.06:246:27
2712.06:256:27
2812.06:256:28
2912.06:266:28
3012.06:266:29
3112.06:276:29

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.55 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 5.13 kWh/m² in March across the year — December's 4.55 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.7Bright
314.7Bright
Planning a trip in December

Hazard calendar for Port-Gentil

In seasonPeak

In December, Port-Gentil sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Port-Gentil's rainy season runs October–April, when most of the year's rain falls.

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

Is December a good time to visit Port-Gentil?

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

3.7
Sightseeing
11th-best month of the year
3.8
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Port-Gentil.

What to pack for Port-Gentil in December

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

In December, Port-Gentil sees daytime highs around 27°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Port-Gentil in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in March at about 29°C and coldest in July near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Warm
Jun26Warm
Jul25Warm
Aug25Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec28Warm

UV index in Port-Gentil in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Port-Gentil 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
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Port-Gentil in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Port-Gentil is worst in February — around 25 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (October, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 1224 µg/m³Oct 178 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb25Moderate
Mar18Moderate
Apr14Moderate
May16Moderate
Jun21Moderate
Jul21Moderate
Aug18Moderate
Sep11Good
Oct8Good
Nov11Good
Dec17Moderate
Location & terrain

Where is Port-Gentil?

Port-Gentil sits at 0.7°S, 8.8°E, 4 m above sea level, in Gabon. The nearest listed city is Owendo, 138 km away.

OwendoLibrevilleAkandaLambarénéNtoumOyamMouila

Topography around Port-Gentil

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

Within 3 km, the terrain around Port-Gentil has only modest variations in elevation — a maximum elevation change of 9 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 41 m; within 80 km, only modest variations in elevation — a maximum elevation change of 236 m.

The land around Port-Gentil is covered by artificial surfaces (50%) and water (38%) within 3 km, water (77%) within 16 km, and water (60%) and trees (28%) within 80 km.

3 km
9 m
16 km
41 m
80 km
236 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Owendo 138 km · Libreville 144 km · Akanda 160 km · Lambaréné 162 km · Ntoum 165 km · Oyam 219 km · São Tomé 257 km · Mouila 283 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 Port-Gentil (-0.7193°, 8.7815°, elevation 4 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).