Climate averages 1991–2020
Kollam weather
in May.
A hot, very wet month: the 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Kollam: daytime highs average 29.9°C and nights cool to about 25.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 302 mm of rain on roughly 28 days, which makes May a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average May day.
The nearest other city in this atlas is Thiruvananthapuram (60 km away). In May its highs average 29.0°C, 0.9°C cooler than Kollam, with 224 mm of rain.
Among the 692 cities listed in India, Kollam ranks joint 662nd of 692 for the warmest May highs and 678th of 692 for the driest May (rainfall, lowest first). The mean May high of those 692 cities is 37.3°C; Kollam is 7.4°C cooler than that mean.
From May to June, average highs fall by 1.8°C to 28.1°C, and monthly rainfall rises from 302 mm to 414 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Kollam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.9°C23.5°C | 23.5°C | 20 | 4.2 | 11.712 h |
| February | 31.7°C24.0°C | 24.0°C | 25 | 6.6 | 11.812 h |
| March | 32.0°C25.0°C | 25.0°C | 67 | 16.4 | 12.112 h |
| April | 31.2°C25.7°C | 25.7°C | 156 | 26.5 | 12.312 h |
| May, selected | 29.9°C25.7°C | 25.7°C | 302 | 28.4 | 12.513 h |
| June | 28.1°C24.8°C | 24.8°C | 414 | 29.9 | 12.613 h |
| July | 27.6°C24.3°C | 24.3°C | 355 | 30.0 | 12.613 h |
| August | 27.6°C24.2°C | 24.2°C | 286 | 28.9 | 12.412 h |
| September | 28.1°C24.3°C | 24.3°C | 245 | 26.6 | 12.212 h |
| October | 28.4°C24.2°C | 24.2°C | 251 | 27.1 | 11.912 h |
| November | 28.8°C24.1°C | 24.1°C | 178 | 20.7 | 11.712 h |
| December | 29.7°C23.7°C | 23.7°C | 64 | 8.7 | 11.612 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Thiruvananthapuram in MayIndia · 60 kmHigh 29.0°C · Low 25.3°C · 224 mm rain
- Alappuzha in MayIndia · 73 kmHigh 30.1°C · Low 25.5°C · 299 mm rain
- Neyyāttinkara in MayIndia · 77 kmHigh 29.2°C · Low 25.5°C · 224 mm rain
- Thenkasi in MayIndia · 81 kmHigh 32.4°C · Low 23.7°C · 145 mm rain
- Kadayanallur in MayIndia · 86 kmHigh 33.1°C · Low 24.1°C · 145 mm rain
- Nāgercoil in MayIndia · 122 kmHigh 30.9°C · Low 25.9°C · 85 mm rain
- Tirunelveli in MayIndia · 122 kmHigh 36.2°C · Low 25.9°C · 54 mm rain
- Rajapalayam in MayIndia · 124 kmHigh 36.4°C · Low 25.3°C · 116 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Kollam) is explained once on the Kollam year overview and on the Sources, method and limits page.