Kollam, Kerala Weather by Month and Climate Averages

Kollam, Kerala gets 1618 mm of precipitation a year over about 125 rainy days. March is the warmest month (average high 34°C) and January the coldest (average low 22°C).

Kollam climate at a glance

Tropical savanna climate

Kollam, Kerala has hot summers and hot winters. Daytime highs range from about 31°C in July to 34°C in March. June is usually the wettest month.

How much rain does Kollam get?

Kollam gets 1618 mm of precipitation in an average year, spread over about 125 days with measurable rain. That is more rainy days than 94% of India.

June is the wettest month, with 281 mm. February is the driest, with 19 mm. June has the most rainy days, about 20.

Kollam weather by month

Kollam weather in January

In January, Kollam averages a high of 33°C and a low of 22°C. It gets 20 mm of precipitation over about 2 rainy days. The sun is out about 56% of daylight hours. The January record high is 38°C (1990) and the record low is 15°C (1985).

Kollam weather in February

In February, Kollam averages a high of 33°C and a low of 23°C. It gets 19 mm of precipitation over about 2 rainy days. The sun is out about 62% of daylight hours. The February record high is 38°C (2019) and the record low is 18°C (1974).

Kollam weather in March

In March, Kollam averages a high of 34°C and a low of 24°C. It gets 23 mm of precipitation over about 2 rainy days. The sun is out about 56% of daylight hours. The March record high is 38°C (2010) and the record low is 19°C (1975).

Kollam weather in April

In April, Kollam averages a high of 34°C and a low of 25°C. It gets 84 mm of precipitation over about 7 rainy days. The sun is out about 41% of daylight hours. The April record high is 39°C (1976) and the record low is 20°C (2014).

Kollam weather in May

In May, Kollam averages a high of 33°C and a low of 25°C. It gets 169 mm of precipitation over about 11 rainy days. The sun is out about 15% of daylight hours. The May record high is 38°C (2009) and the record low is 20°C (2004).

Kollam weather in June

In June, Kollam averages a high of 31°C and a low of 24°C. It gets 281 mm of precipitation over about 20 rainy days. The sun is out about 11% of daylight hours. The June record high is 37°C (1978) and the record low is 21°C (2004).

Kollam weather in July

In July, Kollam averages a high of 31°C and a low of 23°C. It gets 171 mm of precipitation over about 19 rainy days. The sun is out about 9% of daylight hours. The July record high is 39°C (2006) and the record low is 20°C (1980).

Kollam weather in August

In August, Kollam averages a high of 31°C and a low of 24°C. It gets 148 mm of precipitation over about 15 rainy days. The sun is out about 13% of daylight hours. The August record high is 38°C (1979) and the record low is 19°C (2000).

Kollam weather in September

In September, Kollam averages a high of 31°C and a low of 24°C. It gets 186 mm of precipitation over about 14 rainy days. The sun is out about 17% of daylight hours. The September record high is 36°C (1999) and the record low is 21°C (1987).

Kollam weather in October

In October, Kollam averages a high of 32°C and a low of 23°C. It gets 270 mm of precipitation over about 16 rainy days. The sun is out about 19% of daylight hours. The October record high is 37°C (1981) and the record low is 20°C (1978).

Kollam weather in November

In November, Kollam averages a high of 32°C and a low of 23°C. It gets 184 mm of precipitation over about 13 rainy days. The sun is out about 18% of daylight hours. The November record high is 39°C (1983) and the record low is 19°C (1974).

Kollam weather in December

In December, Kollam averages a high of 32°C and a low of 23°C. It gets 62 mm of precipitation over about 6 rainy days. The sun is out about 41% of daylight hours. The December record high is 36°C (2023) and the record low is 18°C (2003).

Sunshine, humidity and wind in Kollam

February is the sunniest month in Kollam, with sunshine about 62% of daylight hours. July is the cloudiest, at 9%. Over the year the sun shines about 30% of daylight hours. Kollam is cloudier than 95% of India.

Humidity peaks in July at 88% and is lowest in February at 75%.

Kollam has about 147 days a year above 32°C. Kollam is hotter than 64% of India.

Kollam weather records

The hottest temperature on record at the Kollam station is 39°C, on November 3, 1983. The coldest is 15°C, on January 24, 1985.

The wettest day on record brought 235 mm of rain, on November 11, 1993.

19 all-time records have been set at the station since 1970.

The best time to visit Kollam

Winter (December–February) is hot, with average highs around 33°C and lows near 23°C.

Spring (March–May) is hot, with average highs around 34°C and lows near 25°C.

Summer (June–August) is hot, with average highs around 31°C and lows near 24°C. It can feel humid.

Autumn (September–November) is hot, with average highs around 31°C and lows near 24°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineSea tempRecord highRecord low
January20 mm276%56%-2°38°15°
February19 mm275%62%-2°38°18°
March23 mm278%56%-1°38°19°
April84 mm781%41%-1°39°20°
May169 mm1185%15%-1°38°20°
June281 mm2087%11%-2°37°21°
July171 mm1988%9%-3°39°20°
August148 mm1588%13%-3°38°19°
September186 mm1487%17%-2°36°21°
October270 mm1685%19%-2°37°20°
November184 mm1382%18%-2°39°19°
December62 mm678%41%-2°36°18°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Kollam climate questions

How much rain does Kollam get?

Kollam gets 1618 mm of precipitation in an average year, over about 125 rainy days.

What is the wettest month in Kollam?

June is the wettest month in Kollam, with 281 mm. February is the driest, with 19 mm.

How many rainy days does Kollam have a year?

Kollam has about 125 days with measurable rain in an average year. June has the most, about 20.

What is the hottest month in Kollam?

March is the warmest month in Kollam, with an average high of 34°C.

What is the coldest month in Kollam?

January is the coldest month in Kollam, with an average low of 22°C.

What is the record high temperature in Kollam?

The record high at the Kollam station is 39°C, set on November 3, 1983. The record low is 15°C, on January 24, 1985.

What is the sunniest month in Kollam?

February is the sunniest month in Kollam, with sunshine about 62% of daylight hours. July is the cloudiest.

Source: NOAA GHCN-Daily station THIRUVANANTHAPURAM (60 km away).

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Normals from NOAA GHCN-Daily station THIRUVANANTHAPURAM.