Ntoum weather in December

In December, Ntoum sees average daytime highs of 29°C and overnight lows near 24°C, with 308 mm of rain across 30.3 wet days and about 12 hours of daylight. It is the 6th-warmest and 3rd-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 1% 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 Ntoum's 2nd-clearest and 9th-windiest month. For the whole year in context, see Ntoum's year-round climate.

Daytime high
29°
6th warmest
Overnight low
24°
7th coldest
Rainfall
308 mm
30.3 wet days
Daylight
12 hours
6:18 AM – 6:16 PM
Cloud cover
81%
2nd clearest
Wind
5 km/h
9th windiest
Solar energy
4.12 kWh/m²
Travel score
2.9
out of 10

Ntoum 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 29°C through the month.

A typical December day in Ntoum reaches about 29°C in the afternoon and slips back to 24°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 30°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How December really feels in Ntoum

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ntoum weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°24829.6122.8
Feb30° / 24°24026.6122.7
Mar30° / 24°29829.7122.6
Apr30° / 24°27027.7122.7
May30° / 24°23027.6123.0
Jun28° / 23°8012.8125.3
Jul27° / 22°357.5126.4
Aug27° / 22°429.3126.0
Sep28° / 23°16223.3124.0
Oct29° / 23°36830.4122.9
Nov29° / 23°38829.7122.8
Dec29° / 24°30830.3122.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6892
7991
8991
9991
10991
111090
121090
131189
141189
151189
161189
171189
181288
191288
201288
211288
221288
231288
241387
251288
261288
271288
281288
291387
301387
311387

Chance of precipitation in December

Any precipitation

Ntoum gets around 308 mm of rain over 30.3 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 98% and peaks near 99% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
199
299
399
499
598
698
798
898
998
1098
1197
1297
1397
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2497
2597
2698
2798
2898
2998
3098
3198

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 79% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18416
28416
38416
48416
58416
68416
78416
88416
98416
108317
118317
128218
138218
148119
158020
168020
177921
187822
197723
207723
217624
227525
237525
247525
257525
267525
277426
287426
297426
307426
317426

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:11 AM to 6:25 AM, and sunset from 6:10 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:116:10
212.06:126:10
312.06:126:11
412.06:136:11
512.06:136:12
612.06:136:12
712.06:146:12
812.06:146:13
912.06:156:13
1012.06:156:14
1112.06:166:14
1212.06:166:15
1312.06:166:15
1412.06:176:16
1512.06:176:16
1612.06:186:16
1712.06:186:17
1812.06:196:17
1912.06:196:18
2012.06:206:18
2112.06:206:19
2212.06:216:19
2312.06:216:20
2412.06:226:20
2512.06:226:21
2612.06:226:21
2712.06:236:22
2812.06:236:22
2912.06:246:23
3012.06:246:23
3112.06:256:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.12 kWh/m².

For context, solar energy here swings from a low near 3.35 kWh/m² to a high of 4.69 kWh/m² in March across the year — December's 4.12 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in December

Is December a good time to visit Ntoum?

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

2.9
Sightseeing
6th-best month of the year
3.7
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Ntoum.

What to pack for Ntoum in December

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

In December, Ntoum sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

Sea temperature near Ntoum 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 43 km away) is warmest in March at about 29°C and coldest in August 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Ntoum in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ntoum peaks around March 20 at about 13 (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 highExtremeVery highMar 20UV 13Jun 19UV 8
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar13Extreme
Apr12Extreme
May11Extreme
Jun8Very high
Jul9Very high
Aug9Very high
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec9Very high

Air quality in Ntoum 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 Ntoum is worst in February — around 46 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (September, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateFeb 1345 µg/m³Sep 2321 µg/m³
PM2.5 (µg/m³)Level
Jan41Poor
Feb46Poor
Mar36Poor
Apr31Moderate
May30Moderate
Jun32Moderate
Jul31Moderate
Aug26Moderate
Sep21Moderate
Oct21Moderate
Nov26Moderate
Dec36Poor
Location & terrain

Where is Ntoum?

Ntoum sits at 0.4°N, 9.8°E, 11 m above sea level, in Gabon. The nearest listed city is Owendo, 31 km away.

AkandaOyamLambarénéBataPort-GentilCiudad de la Paz

Topography around Ntoum

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

Within 3 km, the terrain around Ntoum has only modest variations in elevation — a maximum elevation change of 85 m around an average of 19 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 299 m; within 80 km, large variations in elevation — a maximum elevation change of 908 m.

The land around Ntoum is covered by trees (85%) within 3 km, trees (88%) within 16 km, and trees (66%) and water (26%) within 80 km.

3 km
85 m
16 km
299 m
80 km
908 m
treesgrasslandartificial surfaceswatermangroves
December weather nearby: Owendo 31 km · Libreville 34 km · Akanda 54 km · Oyam 122 km · Lambaréné 132 km · Bata 164 km · Port-Gentil 165 km · Ciudad de la Paz 178 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 Ntoum (0.3905°, 9.761°, elevation 11 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).