Boma climate

Name: Boma
Address: CD

Boma is warmest in March, with average highs of 31 °C, and coldest in July, when nights average 19 °C. December is the wettest month (186 mm) and July the driest (2.7 mm). Figures are 1991–2020 climate normals.

Across a full year Boma averages 1,150 mm of rain and 363 days above 25 °C.

Democratic Republic of the Congo · population 297,009 · 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 March 31 °C
Coldest month July 19 °C
Driest month July 3 mm
Wettest month December 186 mm
Least cloud June 68 % cloud
Hottest on record January 36 °C
Coldest on record July 15 °C

What to expectBoma through the year

Boma has a clear annual cycle: average daily highs run from 28 °C in July to 31 °C in March, a swing of 4.2 °C in mean temperature across the year.

Counted across a normal year, 363 days a year reach 25 °C, 148 of them reach 30 °C. The warmest reading in the 1991–2020 record is 36 °C, in January.

Rain is strongly seasonal. December averages 186 mm against 3 mm in July — 68 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	30.1 °C	176 mm	87 %
February	30.6 °C	151 mm	86 %
March	30.8 °C	151 mm	86 %
April	30.4 °C	184 mm	86 %
May	29.6 °C	66 mm	77 %
June	28.1 °C	4 mm	68 %
July	27.6 °C	3 mm	69 %
August	27.4 °C	6 mm	76 %
September	28.4 °C	13 mm	81 %
October	29.9 °C	56 mm	84 %
November	30.2 °C	155 mm	85 %
December	29.9 °C	186 mm	87 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	30.1 °C	23.6 °C	26.1 °C	36.3 °C	20.6 °C	31	18
February	30.6 °C	23.9 °C	26.5 °C	34.7 °C	20.8 °C	28	20
March	30.8 °C	24.3 °C	26.8 °C	35.9 °C	21.3 °C	31	25
April	30.4 °C	24.2 °C	26.6 °C	34.8 °C	20.1 °C	30	20
May	29.6 °C	23.4 °C	25.9 °C	33.2 °C	19.0 °C	31	12
June	28.1 °C	20.5 °C	23.8 °C	32.4 °C	15.9 °C	30	3
July	27.6 °C	18.9 °C	22.6 °C	32.3 °C	14.9 °C	30	2
August	27.4 °C	19.4 °C	22.9 °C	32.1 °C	15.8 °C	30	1
September	28.4 °C	20.9 °C	24.1 °C	33.5 °C	17.6 °C	30	3
October	29.9 °C	22.8 °C	25.6 °C	34.5 °C	20.0 °C	31	13
November	30.2 °C	23.6 °C	26.1 °C	34.5 °C	19.4 °C	30	19
December	29.9 °C	23.6 °C	26.0 °C	33.4 °C	20.2 °C	31	15

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	176 mm	22	12 h/day	87 %	86 %	9.0 km/h
February	151 mm	19	12 h/day	86 %	86 %	9.2 km/h
March	151 mm	20	12 h/day	86 %	86 %	9.2 km/h
April	184 mm	22	12 h/day	86 %	88 %	8.4 km/h
May	66 mm	11	12 h/day	77 %	86 %	8.7 km/h
June	4 mm	1	12 h/day	68 %	82 %	9.6 km/h
July	3 mm	0	12 h/day	69 %	80 %	10 km/h
August	6 mm	1	12 h/day	76 %	79 %	10 km/h
September	13 mm	2	12 h/day	81 %	79 %	11 km/h
October	56 mm	10	12 h/day	84 %	80 %	12 km/h
November	155 mm	22	12 h/day	85 %	84 %	10 km/h
December	186 mm	23	12 h/day	87 %	87 %	9.1 km/h

How Boma 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
Boma	31 °C	19 °C	1,150 mm	363
Matadi · Democratic Republic of the Congo	31 °C	18 °C	1,065 mm	359
Soyo · Angola	29 °C	20 °C	780 mm	266
Cabinda · Angola	29 °C	20 °C	1,267 mm	298
Pointe-Noire · Republic of the Congo	29 °C	20 °C	1,446 mm	327
Uíge · Angola	30 °C	16 °C	1,921 mm	345
Kinshasa · Democratic Republic of the Congo	31 °C	20 °C	1,074 mm	365

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

QuestionsCommon questions about Boma’s climate

When is the best time to visit Boma?

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

How hot does Boma get?

In March, the warmest month, daily highs average 31 °C. About 148 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average 19 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Boma?

December, averaging 186 mm over 23 days with rain. The driest month is July with 3 mm. The year as a whole averages 1,150 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 Boma 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
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.