Fianarantsoa climate

Name: Fianarantsoa
Address: MG

Fianarantsoa is warmest in December, with average highs of 25 °C, and coldest in July, when nights average 10 °C. January is the wettest month (290 mm) and August the driest (9.9 mm). Figures are 1991–2020 climate normals.

Across a full year Fianarantsoa averages 1,148 mm of rain and 84 days above 25 °C.

Madagascar · population 203,105 · 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 December 25 °C
Coldest month July 10 °C
Driest month August 10 mm
Wettest month January 290 mm
Least cloud September 51 % cloud
Hottest on record October 32 °C
Coldest on record July 2.7 °C

What to expectFianarantsoa through the year

Fianarantsoa has a clear annual cycle: average daily highs run from 18 °C in July to 25 °C in December, a swing of 6.8 °C in mean temperature across the year.

Counted across a normal year, 84 days a year reach 25 °C, 1 of them reach 30 °C. The warmest reading in the 1991–2020 record is 32 °C, in October.

Rain is strongly seasonal. January averages 290 mm against 10 mm in August — 29 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	24.5 °C	290 mm	82 %
February	24.2 °C	220 mm	81 %
March	23.9 °C	150 mm	75 %
April	22.7 °C	53 mm	67 %
May	21.0 °C	25 mm	64 %
June	18.8 °C	16 mm	61 %
July	17.8 °C	17 mm	64 %
August	19.4 °C	10 mm	57 %
September	21.7 °C	11 mm	51 %
October	23.8 °C	45 mm	55 %
November	25.0 °C	98 mm	63 %
December	25.1 °C	212 mm	74 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C
January	24.5 °C	17.3 °C	20.3 °C	30.1 °C	11.1 °C	14
February	24.2 °C	17.3 °C	20.1 °C	29.3 °C	12.8 °C	9
March	23.9 °C	16.8 °C	19.7 °C	28.2 °C	12.2 °C	9
April	22.7 °C	15.4 °C	18.4 °C	27.7 °C	9.7 °C	3
May	21.0 °C	13.4 °C	16.6 °C	26.5 °C	7.6 °C	1
June	18.8 °C	11.3 °C	14.5 °C	24.3 °C	5.2 °C	0
July	17.8 °C	10.2 °C	13.5 °C	24.0 °C	2.7 °C	0
August	19.4 °C	10.4 °C	14.3 °C	25.7 °C	5.1 °C	0
September	21.7 °C	11.5 °C	16.0 °C	30.4 °C	6.6 °C	3
October	23.8 °C	13.7 °C	18.1 °C	31.5 °C	8.0 °C	11
November	25.0 °C	15.5 °C	19.6 °C	31.1 °C	8.7 °C	16
December	25.1 °C	16.8 °C	20.3 °C	30.0 °C	11.2 °C	18

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	290 mm	23	13 h/day	82 %	86 %	15 km/h
February	220 mm	19	13 h/day	81 %	86 %	16 km/h
March	150 mm	16	12 h/day	75 %	86 %	15 km/h
April	53 mm	10	12 h/day	67 %	85 %	15 km/h
May	25 mm	6	11 h/day	64 %	84 %	14 km/h
June	16 mm	4	11 h/day	61 %	84 %	15 km/h
July	17 mm	4	11 h/day	64 %	84 %	16 km/h
August	10 mm	3	11 h/day	57 %	81 %	16 km/h
September	11 mm	3	12 h/day	51 %	78 %	17 km/h
October	45 mm	8	13 h/day	55 %	77 %	16 km/h
November	98 mm	13	13 h/day	63 %	79 %	15 km/h
December	212 mm	20	13 h/day	74 %	83 %	14 km/h

How Fianarantsoa 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
Fianarantsoa	25 °C	10 °C	1,148 mm	84
Antsirabe · Madagascar	25 °C	7.5 °C	1,596 mm	60
Antananarivo · Madagascar	26 °C	9.8 °C	1,070 mm	113
Toliara · Madagascar	32 °C	17 °C	556 mm	351

Where Fianarantsoa ranks

Ranking	Position	Value
The coolest places in Africa in August	11th of 50	19 °C
The coolest places in Africa in September	17th of 50	22 °C
Places with the best weather in Africa in September	18th of 50	92/100
The coolest places in Africa in July	18th of 50	18 °C
The coolest places in Africa in June	25th of 50	19 °C
The coolest places in Africa in May	25th of 50	21 °C

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

QuestionsCommon questions about Fianarantsoa’s climate

When is the best time to visit Fianarantsoa?

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

How hot does Fianarantsoa get?

In December, the warmest month, daily highs average 25 °C. About 1 days a year pass 30 °C. The highest value in the 1991–2020 record is 32 °C.

How cold does it get in winter?

Nights average 10 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Fianarantsoa?

January, averaging 290 mm over 23 days with rain. The driest month is August with 10 mm. The year as a whole averages 1,148 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 Fianarantsoa 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: -21.453°, 47.086° (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.