Monrovia climate

Name: Monrovia
Address: LR

Monrovia is warmest in April, with average highs of 29 °C, and coldest in September, when nights average 23 °C. September is the wettest month (516 mm) and January the driest (82 mm). Figures are 1991–2020 climate normals.

Across a full year Monrovia averages 3,443 mm of rain and 356 days above 25 °C.

Liberia · population 1,542,549 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month April 29 °C
Coldest month September 23 °C
Driest month January 82 mm
Wettest month September 516 mm
Least cloud January 49 % cloud
Hottest on record September 37 °C
Coldest on record January 20 °C
Warmest sea May 29 °C

What to expectMonrovia through the year

Monrovia changes little through the year. Average daily highs stay between 27 and 29 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 356 days a year reach 25 °C, 34 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in September.

Rain is strongly seasonal. September averages 516 mm against 82 mm in January — 6.3 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Monrovia is warmest in May at 29 °C and coldest in August at 27 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.4 °C	82 mm	49 %
February	29.3 °C	100 mm	55 %
March	29.3 °C	159 mm	65 %
April	29.4 °C	203 mm	75 %
May	28.9 °C	321 mm	84 %
June	27.6 °C	479 mm	83 %
July	26.6 °C	425 mm	84 %
August	26.4 °C	507 mm	87 %
September	27.1 °C	516 mm	85 %
October	28.0 °C	351 mm	79 %
November	28.7 °C	194 mm	70 %
December	28.9 °C	107 mm	55 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.4 °C	23.8 °C	26.3 °C	32.9 °C	20.0 °C	31	8
February	29.3 °C	24.4 °C	26.4 °C	32.2 °C	21.8 °C	28	6
March	29.3 °C	24.6 °C	26.5 °C	32.1 °C	21.4 °C	31	6
April	29.4 °C	24.6 °C	26.6 °C	31.7 °C	22.7 °C	30	6
May	28.9 °C	24.0 °C	26.1 °C	34.7 °C	21.9 °C	31	4
June	27.6 °C	23.3 °C	25.1 °C	34.3 °C	21.5 °C	29	0
July	26.6 °C	23.1 °C	24.6 °C	31.6 °C	21.1 °C	29	0
August	26.4 °C	23.0 °C	24.4 °C	32.4 °C	21.3 °C	27	0
September	27.1 °C	22.9 °C	24.6 °C	36.5 °C	21.4 °C	28	0
October	28.0 °C	23.1 °C	25.1 °C	31.0 °C	21.2 °C	31	0
November	28.7 °C	23.4 °C	25.6 °C	31.3 °C	21.6 °C	30	1
December	28.9 °C	23.7 °C	26.0 °C	33.2 °C	21.6 °C	31	3

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	82 mm	16	12 h/day	49 %	85 %	11 km/h	28.0 °C
February	100 mm	19	12 h/day	55 %	87 %	12 km/h	27.3 °C
March	159 mm	25	12 h/day	65 %	87 %	12 km/h	27.3 °C
April	203 mm	26	12 h/day	75 %	88 %	11 km/h	28.1 °C
May	321 mm	30	12 h/day	84 %	89 %	12 km/h	28.8 °C
June	479 mm	29	12 h/day	83 %	90 %	14 km/h	28.1 °C
July	425 mm	27	12 h/day	84 %	87 %	16 km/h	27.0 °C
August	507 mm	27	12 h/day	87 %	88 %	16 km/h	26.6 °C
September	516 mm	29	12 h/day	85 %	90 %	14 km/h	26.8 °C
October	351 mm	30	12 h/day	79 %	89 %	12 km/h	27.8 °C
November	194 mm	28	12 h/day	70 %	89 %	11 km/h	28.4 °C
December	107 mm	22	12 h/day	55 %	88 %	10 km/h	28.6 °C

How Monrovia compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Monrovia	29 °C	23 °C	3,443 mm	356
Kenema · Sierra Leone	34 °C	22 °C	2,287 mm	352
Bo · Sierra Leone	34 °C	22 °C	2,509 mm	353
Nzérékoré · Guinea	32 °C	20 °C	1,872 mm	345
Freetown · Sierra Leone	28 °C	24 °C	3,006 mm	360
Man · Ivory Coast	33 °C	21 °C	1,511 mm	358

Where Monrovia ranks

Ranking	Position	Value
Warmest sea temperatures in Africa in December	9th of 50	29 °C
Warmest sea temperatures in Africa in June	10th of 50	28 °C
Warmest sea temperatures in Africa in May	15th of 50	29 °C
Warmest sea temperatures in Africa in October	16th of 50	28 °C
Warmest sea temperatures in Africa in November	17th of 50	28 °C
Warmest sea temperatures in Africa year-round	17th of 50	28 °C

Planning a trip? See the best time to visit Monrovia.

QuestionsCommon questions about Monrovia’s climate

When is the best time to visit Monrovia?

That depends on what you want, so the honest answer is a comparison rather than a single month. July, August, September sit closest to 20 °C on average, April is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Monrovia get?

In April, the warmest month, daily highs average 29 °C. About 34 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 23 °C in September, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Monrovia?

September, averaging 516 mm over 29 days with rain. The driest month is January with 82 mm. The year as a whole averages 3,443 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Monrovia rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 6.301°, -10.797° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.