Hyperlocal rainfall totals + real-time NOAA forecasts
Accurate weather without the clutter
Kollam, Kerala Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Kollam, Kerala?
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).
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.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 23° | 33° |
| Spring | Mar–May | 25° | 34° |
| Summer | Jun–Aug | 24° | 31° |
| Autumn | Sep–Nov | 23° | 32° |
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.
The longest dry spell in the last five years lasted 36 days, to September 24, 2026.
From October 2025 to September 2026 Kollam got no rain, against a normal of 1618 mm for those months.
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. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 62% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 15% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 11% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 9% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 13% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 17% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 19% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 18% of daylight hours, derived from ERA5 cloud cover. 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. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. 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 estimated sunshine of 62% of daylight hours from ERA5 cloud cover. July is the cloudiest, at 9%. The annual cloud-cover estimate is 30% of daylight hours; it is not a measurement of sunshine duration. 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 65% of India.
Kollam weather records
These records cover THIRUVANANTHAPURAM during 1970–2026. Earlier records or other stations in the city may differ.
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 in the available station history brought 235 mm of precipitation, 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
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 22° | 33° | 20 mm | 2 | 76% | 56% | 38° | 15° |
| February | 23° | 33° | 19 mm | 2 | 75% | 62% | 38° | 18° |
| March | 24° | 34° | 23 mm | 2 | 78% | 56% | 38° | 19° |
| April | 25° | 34° | 84 mm | 7 | 81% | 41% | 39° | 20° |
| May | 25° | 33° | 169 mm | 11 | 85% | 15% | 38° | 20° |
| June | 24° | 31° | 281 mm | 20 | 87% | 11% | 37° | 21° |
| July | 23° | 31° | 171 mm | 19 | 88% | 9% | 39° | 20° |
| August | 24° | 31° | 148 mm | 15 | 88% | 13% | 38° | 19° |
| September | 24° | 31° | 186 mm | 14 | 87% | 17% | 36° | 21° |
| October | 23° | 32° | 270 mm | 16 | 85% | 19% | 37° | 20° |
| November | 23° | 32° | 184 mm | 13 | 82% | 18% | 39° | 19° |
| December | 23° | 32° | 62 mm | 6 | 78% | 41% | 36° | 18° |
Station: THIRUVANANTHAPURAM, 60 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
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?
Within the available 1970–2026 station history, 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 estimated sunshine of 62% of daylight hours from ERA5 cloud cover. July is the cloudiest.