Monrovia weather in December

In December, Monrovia sees average daytime highs of 28°C and overnight lows near 24°C, with 105 mm of rain across 23.1 wet days and about 11.6 hours of daylight. It is the 6th-warmest and 10th-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 25% of the time in December, and the air most often feels miserable.

Daylight stretches from about 11 h 42 min at the start of December to 11 h 36 min by month's end. Set against the rest of the year, December is Monrovia's 3rd-clearest and 12th-windiest month. For the whole year in context, see Monrovia's year-round climate.

Daytime high
28°
6th warmest
Overnight low
24°
7th coldest
Rainfall
105 mm
23.1 wet days
Daylight
11 h 36 min
6:50 AM – 6:28 PM
Cloud cover
57%
3rd clearest
Wind
6 km/h
12th windiest
Solar energy
4.74 kWh/m²
Travel score
4.2
out of 10

Monrovia is capital city of Liberia.

Density
7,941/km²
people per km²
Founded
1822

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 28°C through the month.

A typical December day in Monrovia reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°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)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824
312824

How December really feels in Monrovia

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.

Monrovia weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°8317.511.74.9
Feb29° / 25°10220.111.84.2
Mar29° / 25°16125.1123.7
Apr29° / 25°20826.312.13.3
May29° / 25°32129.912.33.0
Jun27° / 24°4922912.43.4
Jul26° / 24°41926.812.33.9
Aug26° / 24°49227.212.23.8
Sep27° / 24°53029.3123.4
Oct28° / 24°35930.411.93.4
Nov28° / 24°19227.611.73.4
Dec28° / 24°10523.111.64.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 32% of December, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34357
44357
54456
64654
74654
84951
94951
105149
115248
125347
135446
145644
155644
165743
175842
186040
196040
206238
216337
226436
236535
246535
256733
266733
276832
286832
296931
306931
316931

Chance of precipitation in December

Any precipitation

Monrovia gets around 105 mm of rain over 23.1 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 74% and peaks near 87% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
187
287
386
486
585
684
783
883
982
1081
1180
1279
1378
1477
1576
1675
1774
1873
1972
2071
2170
2268
2367
2466
2565
2663
2762
2861
2959
3058
3157

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the miserable band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
104654
204654
304654
404654
504654
604555
704555
804555
904555
1004456
1104456
1204357
1304357
1404258
1504258
1604258
1704258
1804159
1904159
2004258
2104258
2204258
2304357
2404456
2504555
2604753
2704852
2814950
2915049
3015148
3115247

Wind in December

Winds average 6 km/h in December, the calmest month.

Across December, 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.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 42 min at the start of December to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:43 AM to 6:57 AM, and sunset from 6:23 PM to 6:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:436:23
211.76:446:23
311.76:446:23
411.76:456:24
511.76:456:24
611.66:456:24
711.66:466:25
811.66:466:25
911.66:476:26
1011.66:476:26
1111.66:486:26
1211.66:486:27
1311.66:496:27
1411.66:496:28
1511.66:506:28
1611.66:506:28
1711.66:516:29
1811.66:516:29
1911.66:526:30
2011.66:526:30
2111.66:536:31
2211.66:536:31
2311.66:546:32
2411.66:546:32
2511.66:556:33
2611.66:556:33
2711.66:556:34
2811.66:566:34
2911.66:566:35
3011.66:576:35
3111.66:576:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.74 kWh/m².

For context, solar energy here swings from a low near 3.89 kWh/m² to a high of 5.44 kWh/m² in March across the year — December's 4.74 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Monrovia

In seasonPeak

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

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

Monrovia sees seasonal dust haze (February), heaviest in February.

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

Is December a good time to visit Monrovia?

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

4.2
Sightseeing
2nd-best month of the year
5.0
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Monrovia for sightseeing.

What to pack for Monrovia in December

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

In December, Monrovia sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Monrovia in December

The nearest coast averages about 29°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in May at about 29°C and coldest in August near 27°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb27Warm
Mar27Warm
Apr28Tropical
May29Tropical
Jun28Tropical
Jul27Warm
Aug27Warm
Sep27Warm
Oct28Warm
Nov28Tropical
Dec29Tropical

UV index in Monrovia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Monrovia peaks around September 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highSep 16UV 13Dec 15UV 8
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr12Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Monrovia 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 Monrovia is worst in February — around 50 µg/m³ PM2.5 (poor), about 6.3× the cleanest month (September, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateFeb 1249 µg/m³Sep 148 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb50Poor
Mar44Poor
Apr40Poor
May18Moderate
Jun15Moderate
Jul13Moderate
Aug9Good
Sep8Good
Oct10Good
Nov16Moderate
Dec35Poor
Location & terrain

Where is Monrovia?

Monrovia sits at 6.3°N, 10.8°W, 32 m above sea level, in Liberia. The nearest listed city is Harbel, 49 km away.

HarbelKakataTubmanburgBuchananGbarngaKenemaSegbwemaBo

Topography around Monrovia

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

Within 3 km, the terrain around Monrovia has only modest variations in elevation — a maximum elevation change of 75 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 75 m; within 80 km, significant variations in elevation — a maximum elevation change of 337 m.

The land around Monrovia is covered by water (58%) and artificial surfaces (24%) within 3 km, water (65%) within 16 km, and trees (55%) and water (39%) within 80 km.

3 km
75 m
16 km
75 m
80 km
337 m
treesshrubsgrasslandartificial surfacesbare terrainwatermangroves
December weather nearby: Harbel 49 km · Kakata 55 km · Tubmanburg 63 km · Buchanan 95 km · Gbarnga 166 km · Kenema 181 km · Segbwema 189 km · Bo 212 km

Liberia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 0% of US
price level, 2025
GDP per capita
$915
2025
Happiness
4.3 / 10
World Happiness, 2025
Homicide rate
3.1
per 100k, 2012
Road deaths
38.9
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 85%Muslim 12%none 3%Traditional 1%

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 Monrovia (6.3005°, -10.7969°, elevation 32 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).