Kollam climate
Kollam (Kerala, India) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C81 °F, and about 2,053 mm81 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Kollam climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3188 | 2170 | 2679 | 150.6 |
| Feb | 3493 | 2272 | 2883 | 251.0 |
| Mar | 3596 | 2476 | 3086 | 602.4 |
| Apr | 3392 | 2578 | 2985 | 1305.1 |
| May | 3188 | 2678 | 2883 | 2339.2 |
| Jun | 2984 | 2577 | 2781 | 30212 |
| Jul | 2883 | 2476 | 2679 | 2449.6 |
| Aug | 2883 | 2475 | 2679 | 2108.3 |
| Sep | 2984 | 2475 | 2679 | 2339.2 |
| Oct | 2984 | 2475 | 2680 | 32713 |
| Nov | 2984 | 2374 | 2679 | 2188.6 |
| Dec | 2984 | 2271 | 2578 | 552.2 |
| Year | 3596 | 2170 | 2781 | 2,05381 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 73% | 39% | 5.6 | 11:39 |
| Feb | 64% | 37% | 6.2 | 11:50 |
| Mar | 65% | 44% | 6.4 | 12:03 |
| Apr | 75% | 60% | 6.1 | 12:19 |
| May | 83% | 74% | 5.2 | 12:32 |
| Jun | 89% | 82% | 4.9 | 12:38 |
| Jul | 90% | 84% | 4.9 | 12:36 |
| Aug | 90% | 80% | 5.3 | 12:25 |
| Sep | 89% | 74% | 5.5 | 12:10 |
| Oct | 88% | 76% | 5.1 | 11:55 |
| Nov | 86% | 72% | 4.7 | 11:42 |
| Dec | 83% | 57% | 4.9 | 11:36 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Kollam is like
The warmest month is March, with an average high of 35 °C96 °F and a low of 24 °C76 °F. The coldest is December, when highs average 29 °C84 °F and lows 22 °C71 °F. Seasonal differences are small — just 4.3 °C7.7 °F between the warmest and the coolest month.
It is very wet, receiving about 2,053 mm81 in of precipitation per year. The wettest three-month stretch is May–July, which brings 38% of the annual total. Months with less than 20 mm0.8 in on average: January. The wettest month is October (327 mm13 in), the driest is January (15 mm0.6 in).
Relative humidity ranges from 64% in February to 90% in July. The clearest skies (lowest average cloud amount, 37%) are typical of February. Average wind speed near the ground ranges from 4 km/h (2 mph) in November to 8 km/h (5 mph) in July. Daylight lasts from about 11.6 hours in December to 12.6 hours in June.
Best time to visit Kollam
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December and January: average highs of 29 °C84 °F to 31 °C88 °F with 15 mm0.6 in to 55 mm2.2 in of precipitation per month.
The most challenging month is October, which is very wet (327 mm13 in) and humid (88% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Kollam
- Wetter months (May–November) — highs 2883 to 31 °C88 °F, lows 2374 to 26 °C78 °F, about 252 mm9.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (December–April) — highs 2984 to 35 °C96 °F, lows 2170 to 25 °C78 °F, about 57 mm2.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Kollam compares
Compared with Thiruvananthapuram, about 60 km to the southeast, Kollam has practically the same average temperature and receives 14% more precipitation (2,053 mm81 in vs 1,797 mm71 in). The difference is largest in December (0.7 °C1.3 °F cooler).
Of the 382 places in India covered by World Climates, Kollam is the 95th warmest by annual mean temperature and the 25th wettest by annual precipitation. See all of them on the India climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Hà Tiên (Vietnam, Aw), São Félix do Xingu (Brazil, Aw) and Porto Velho (Brazil, Aw).
Nearby places
- Thiruvananthapuram 60 km · 27 °C81 °F · 1,797 mm71 in
- Alappuzha 73 km · 28 °C82 °F · 2,710 mm107 in
- Nagercoil 122 km · 27 °C81 °F · 1,314 mm52 in
- Tirunelveli 122 km · 27 °C81 °F · 1,293 mm51 in
- Kanayannur 126 km · 28 °C82 °F · 2,653 mm104 in
- Sivakasi 147 km · 27 °C81 °F · 1,321 mm52 in
- Thoothukudi 171 km · 28 °C83 °F · 1,053 mm41 in
- Thrissur 186 km · 27 °C81 °F · 2,276 mm90 in
Frequently asked questions
What is the warmest month in Kollam?
March is the warmest month in Kollam, with an average high of 35 °C (96 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Kollam?
December is the coldest month, with an average high of 29 °C (84 °F) and an average low of 22 °C (71 °F).
When does it rain the most in Kollam?
October is the wettest month with about 327 mm (12.9 in) of precipitation; January is the driest with about 15 mm (0.6 in).
What is the best time to visit Kollam?
Judging by long-term averages, the most comfortable months are December and January.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 212 m, while Kollam lies at about 13 m. Temperatures on this page were therefore adjusted by +1.3 °C2.3 °F using the standard lapse rate of 6.5 °C per 1,000 m.