Kollam climate

Name: Kollam
Address: IN

Kollam is warmest in March, with average highs of 32 °C, and coldest in January, when nights average 23 °C. June is the wettest month (294 mm) and January the driest (17 mm). Figures are 1991–2020 climate normals.

Across a full year Kollam averages 1,874 mm of rain and 365 days above 25 °C.

India · population 367,107 · 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 32 °C
Coldest month January 23 °C
Driest month January 17 mm
Wettest month June 294 mm
Least cloud February 39 % cloud
Hottest on record February 36 °C
Coldest on record December 20 °C
Warmest sea April 30 °C

What to expectKollam through the year

Kollam changes little through the year. Average daily highs stay between 31 and 32 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 365 days a year reach 25 °C, 141 of them reach 30 °C. The warmest reading in the 1991–2020 record is 36 °C, in February.

Rain is strongly seasonal. June averages 294 mm against 17 mm in January — 17 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Kollam is warmest in April at 30 °C and coldest in July at 26 °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	31.0 °C	17 mm	43 %
February	31.8 °C	22 mm	39 %
March	32.0 °C	57 mm	43 %
April	31.2 °C	128 mm	62 %
May	29.9 °C	217 mm	78 %
June	28.1 °C	294 mm	90 %
July	27.7 °C	246 mm	92 %
August	27.7 °C	207 mm	88 %
September	28.1 °C	185 mm	82 %
October	28.4 °C	245 mm	82 %
November	28.9 °C	192 mm	74 %
December	29.8 °C	63 mm	56 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	31.0 °C	23.4 °C	26.7 °C	34.6 °C	20.5 °C	31	24
February	31.8 °C	23.9 °C	27.3 °C	36.1 °C	19.8 °C	28	26
March	32.0 °C	24.8 °C	28.0 °C	35.7 °C	21.7 °C	31	29
April	31.2 °C	25.6 °C	28.1 °C	35.4 °C	23.7 °C	30	26
May	29.9 °C	25.6 °C	27.5 °C	33.4 °C	23.4 °C	31	16
June	28.1 °C	24.8 °C	26.2 °C	31.4 °C	23.2 °C	30	1
July	27.7 °C	24.3 °C	25.6 °C	30.3 °C	22.7 °C	31	0
August	27.7 °C	24.2 °C	25.6 °C	29.9 °C	23.0 °C	31	0
September	28.1 °C	24.2 °C	25.9 °C	30.7 °C	22.6 °C	30	0
October	28.4 °C	24.1 °C	26.0 °C	31.1 °C	22.6 °C	31	1
November	28.9 °C	23.9 °C	26.1 °C	32.6 °C	21.1 °C	30	4
December	29.8 °C	23.6 °C	26.4 °C	33.4 °C	19.7 °C	31	14

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	17 mm	4	12 h/day	43 %	70 %	13 km/h	28.2 °C
February	22 mm	5	12 h/day	39 %	71 %	15 km/h	28.6 °C
March	57 mm	12	12 h/day	43 %	75 %	15 km/h	29.3 °C
April	128 mm	22	12 h/day	62 %	80 %	12 km/h	29.8 °C
May	217 mm	25	13 h/day	78 %	84 %	14 km/h	29.3 °C
June	294 mm	29	13 h/day	90 %	88 %	17 km/h	27.7 °C
July	246 mm	28	13 h/day	92 %	88 %	18 km/h	26.3 °C
August	207 mm	26	12 h/day	88 %	88 %	18 km/h	26.3 °C
September	185 mm	23	12 h/day	82 %	87 %	15 km/h	27.1 °C
October	245 mm	25	12 h/day	82 %	86 %	11 km/h	28.1 °C
November	192 mm	20	12 h/day	74 %	84 %	9.5 km/h	28.7 °C
December	63 mm	8	12 h/day	56 %	76 %	11 km/h	28.5 °C

Where Kollam ranks

Ranking	Position	Value
The warmest places in Asia in January	26thof 50	31 °C
Warmest sea temperatures in Asia in March	32ndof 50	29 °C
Warmest sea temperatures in the world in March	39thof 50	29 °C
Warmest sea temperatures in Asia in February	42ndof 50	29 °C
The warmest places in Asia in December	48thof 50	30 °C

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

QuestionsCommon questions about Kollam’s climate

When is the best time to visit Kollam?

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

How hot does Kollam get?

In March, the warmest month, daily highs average 32 °C. About 141 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 23 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Kollam?

June, averaging 294 mm over 29 days with rain. The driest month is January with 17 mm. The year as a whole averages 1,874 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 Kollam 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.