Owerri climate

Name: Owerri
Address: NG

Owerri is warmest in February, with average highs of 34 °C, and coldest in July, when nights average 22 °C. September is the wettest month (323 mm) and December the driest (24 mm). Figures are 1991–2020 climate normals.

Across a full year Owerri averages 2,337 mm of rain and 360 days above 25 °C.

Nigeria · population 545,000 · 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 February 34 °C
Coldest month July 22 °C
Driest month December 24 mm
Wettest month September 323 mm
Least cloud December 53 % cloud
Hottest on record February 40 °C
Coldest on record January 17 °C

What to expectOwerri through the year

Owerri has a clear annual cycle: average daily highs run from 28 °C in July to 34 °C in February, a swing of 3.7 °C in mean temperature across the year.

Counted across a normal year, 360 days a year reach 25 °C, 217 of them reach 30 °C. The warmest reading in the 1991–2020 record is 40 °C, in February.

Rain is strongly seasonal. September averages 323 mm against 24 mm in December — 13 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	34.4 °C	25 mm	59 %
February	34.5 °C	52 mm	67 %
March	33.0 °C	132 mm	81 %
April	31.5 °C	210 mm	87 %
May	30.5 °C	270 mm	88 %
June	28.9 °C	296 mm	88 %
July	28.2 °C	310 mm	90 %
August	28.3 °C	277 mm	91 %
September	28.7 °C	323 mm	91 %
October	29.4 °C	304 mm	90 %
November	30.8 °C	115 mm	74 %
December	33.1 °C	24 mm	53 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	34.4 °C	22.7 °C	27.6 °C	38.2 °C	17.3 °C	31	31
February	34.5 °C	23.6 °C	27.9 °C	39.7 °C	17.3 °C	28	28
March	33.0 °C	23.8 °C	27.2 °C	38.7 °C	18.0 °C	31	29
April	31.5 °C	23.6 °C	26.5 °C	36.2 °C	21.6 °C	30	25
May	30.5 °C	23.2 °C	25.9 °C	34.5 °C	21.4 °C	31	21
June	28.9 °C	22.5 °C	24.8 °C	32.3 °C	20.4 °C	29	7
July	28.2 °C	22.0 °C	24.2 °C	32.0 °C	19.7 °C	30	3
August	28.3 °C	22.1 °C	24.3 °C	32.0 °C	20.2 °C	29	3
September	28.7 °C	22.2 °C	24.4 °C	32.2 °C	20.6 °C	29	6
October	29.4 °C	22.4 °C	24.8 °C	32.8 °C	20.0 °C	31	12
November	30.8 °C	22.7 °C	25.8 °C	34.5 °C	20.6 °C	30	23
December	33.1 °C	22.8 °C	27.0 °C	36.6 °C	18.1 °C	31	30

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	25 mm	5	12 h/day	59 %	67 %	11 km/h
February	52 mm	10	12 h/day	67 %	73 %	12 km/h
March	132 mm	20	12 h/day	81 %	81 %	11 km/h
April	210 mm	25	12 h/day	87 %	86 %	9.9 km/h
May	270 mm	28	12 h/day	88 %	88 %	9.0 km/h
June	296 mm	28	12 h/day	88 %	90 %	8.9 km/h
July	310 mm	29	12 h/day	90 %	90 %	9.4 km/h
August	277 mm	27	12 h/day	91 %	89 %	9.9 km/h
September	323 mm	29	12 h/day	91 %	90 %	9.2 km/h
October	304 mm	30	12 h/day	90 %	90 %	8.3 km/h
November	115 mm	18	12 h/day	74 %	86 %	8.6 km/h
December	24 mm	5	12 h/day	53 %	75 %	9.9 km/h

How Owerri 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
Owerri	34 °C	22 °C	2,337 mm	360
Umuahia · Nigeria	34 °C	22 °C	2,012 mm	358
Aba · Nigeria	33 °C	22 °C	2,561 mm	359
Nnewi · Nigeria	34 °C	22 °C	1,945 mm	360
Atani · Nigeria	35 °C	23 °C	1,517 mm	363
Port Harcourt · Nigeria	32 °C	23 °C	2,588 mm	360
Onitsha · Nigeria	35 °C	23 °C	1,264 mm	363

Where Owerri ranks

Ranking	Position	Value
The warmest places in Africa in January	21stof 50	34 °C
The warmest places in the world in January	22ndof 50	34 °C
The warmest places in Africa in December	41stof 50	33 °C
The warmest places in the world in December	47thof 50	33 °C

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

QuestionsCommon questions about Owerri’s climate

When is the best time to visit Owerri?

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, February is the warmest month and December the driest. The month-by-month table above has the full picture.

How hot does Owerri get?

In February, the warmest month, daily highs average 34 °C. About 217 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 22 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Owerri?

September, averaging 323 mm over 29 days with rain. The driest month is December with 24 mm. The year as a whole averages 2,337 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 Owerri 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.