Bariadi climate

Name: Bariadi
Address: TZ

Bariadi is warmest in September, with average highs of 30 °C, and coldest in July, when nights average 17 °C. December is the wettest month (143 mm) and July the driest (3.1 mm). Figures are 1991–2020 climate normals.

Across a full year Bariadi averages 877 mm of rain and 341 days above 25 °C.

Tanzania · population 260,927 · 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 September 30 °C
Coldest month July 17 °C
Driest month July 3 mm
Wettest month December 143 mm
Least cloud August 53 % cloud
Hottest on record February 35 °C
Coldest on record July 14 °C

What to expectBariadi through the year

Bariadi changes little through the year. Average daily highs stay between 29 and 30 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 341 days a year reach 25 °C, 85 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in February.

Rain is strongly seasonal. December averages 143 mm against 3 mm in July — 46 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.3 °C	118 mm	66 %
February	28.4 °C	91 mm	65 %
March	28.2 °C	134 mm	67 %
April	27.1 °C	133 mm	74 %
May	27.8 °C	41 mm	62 %
June	28.4 °C	8 mm	60 %
July	28.7 °C	3 mm	53 %
August	29.4 °C	11 mm	53 %
September	30.4 °C	18 mm	56 %
October	30.1 °C	54 mm	68 %
November	28.2 °C	124 mm	73 %
December	27.2 °C	143 mm	67 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.3 °C	17.9 °C	22.2 °C	34.1 °C	15.0 °C	27	3
February	28.4 °C	18.3 °C	22.9 °C	35.3 °C	15.4 °C	27	7
March	28.2 °C	18.3 °C	22.8 °C	35.3 °C	15.9 °C	28	8
April	27.1 °C	17.8 °C	22.1 °C	33.8 °C	15.1 °C	27	2
May	27.8 °C	18.0 °C	22.7 °C	32.1 °C	14.6 °C	30	3
June	28.4 °C	17.6 °C	22.9 °C	31.8 °C	15.0 °C	30	2
July	28.7 °C	16.9 °C	22.8 °C	31.3 °C	14.3 °C	31	3
August	29.4 °C	17.5 °C	23.4 °C	32.4 °C	14.5 °C	31	10
September	30.4 °C	18.5 °C	24.4 °C	34.2 °C	15.6 °C	30	19
October	30.1 °C	18.9 °C	24.1 °C	35.0 °C	16.2 °C	30	18
November	28.2 °C	18.4 °C	22.8 °C	33.6 °C	15.8 °C	26	8
December	27.2 °C	18.0 °C	22.2 °C	35.0 °C	15.5 °C	26	4

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	118 mm	16	12 h/day	66 %	71 %	12 km/h
February	91 mm	14	12 h/day	65 %	67 %	13 km/h
March	134 mm	17	12 h/day	67 %	69 %	12 km/h
April	133 mm	17	12 h/day	74 %	73 %	12 km/h
May	41 mm	8	12 h/day	62 %	62 %	14 km/h
June	8 mm	2	12 h/day	60 %	50 %	15 km/h
July	3 mm	0	12 h/day	53 %	44 %	17 km/h
August	11 mm	2	12 h/day	53 %	44 %	17 km/h
September	18 mm	4	12 h/day	56 %	45 %	15 km/h
October	54 mm	9	12 h/day	68 %	54 %	14 km/h
November	124 mm	16	12 h/day	73 %	67 %	13 km/h
December	143 mm	18	12 h/day	67 %	71 %	12 km/h

How Bariadi 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
Bariadi	30 °C	17 °C	877 mm	341
Bunda · Tanzania	29 °C	17 °C	1,169 mm	323
Mwanza · Tanzania	26 °C	20 °C	1,613 mm	224
Musoma · Tanzania	27 °C	19 °C	1,186 mm	270
Kahama · Tanzania	30 °C	17 °C	761 mm	344
Geita · Tanzania	28 °C	17 °C	1,308 mm	311
Singida · Tanzania	29 °C	13 °C	608 mm	257

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

QuestionsCommon questions about Bariadi’s climate

When is the best time to visit Bariadi?

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

How hot does Bariadi get?

In September, the warmest month, daily highs average 30 °C. About 85 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 17 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Bariadi?

December, averaging 143 mm over 18 days with rain. The driest month is July with 3 mm. The year as a whole averages 877 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 Bariadi 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.