Climate averages 1991–2020
Kolkata weather
in May.
A very hot, wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a very hot month in Kolkata: daytime highs average 34.9°C and nights cool to about 26.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 122 mm of rain on roughly 12 days, which makes May a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 12 min on an average May day.
The nearest other city in this atlas is Howrah (5 km away). In May its highs average 35.2°C, about as warm as Kolkata, with 122 mm of rain.
Among the 692 cities listed in India, Kolkata ranks joint 551st of 692 for the warmest May highs and joint 609th of 692 for the driest May (rainfall, lowest first). The mean May high of those 692 cities is 37.3°C; Kolkata is 2.4°C cooler than that mean.
From May to June, average highs fall by 2.1°C to 32.8°C, and monthly rainfall rises from 122 mm to 265 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
Kolkata climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.0°C13.2°C | 13.2°C | 13 | 1.7 | 10.911 h |
| February | 28.5°C16.7°C | 16.7°C | 24 | 2.6 | 11.411 h |
| March | 33.0°C21.6°C | 21.6°C | 30 | 4.2 | 12.012 h |
| April | 35.2°C25.3°C | 25.3°C | 68 | 8.6 | 12.713 h |
| May, selected | 34.9°C26.9°C | 26.9°C | 122 | 11.7 | 13.213 h |
| June | 32.8°C27.1°C | 27.1°C | 265 | 21.8 | 13.513 h |
| July | 31.1°C26.2°C | 26.2°C | 348 | 28.6 | 13.413 h |
| August | 30.9°C25.9°C | 25.9°C | 308 | 29.2 | 12.913 h |
| September | 30.8°C25.4°C | 25.4°C | 250 | 24.9 | 12.312 h |
| October | 30.2°C23.3°C | 23.3°C | 131 | 12.9 | 11.612 h |
| November | 28.4°C18.7°C | 18.7°C | 29 | 2.1 | 11.111 h |
| December | 25.7°C14.5°C | 14.5°C | 10 | 1.0 | 10.811 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
- Howrah in MayIndia · 5 kmHigh 35.2°C · Low 27.0°C · 122 mm rain
- Maheshtala in MayIndia · 13 kmHigh 35.1°C · Low 27.1°C · 122 mm rain
- Pānihāti in MayIndia · 14 kmHigh 35.0°C · Low 26.8°C · 134 mm rain
- Rajpur Sonarpur in MayIndia · 16 kmHigh 34.8°C · Low 27.1°C · 128 mm rain
- Rishra in MayIndia · 18 kmHigh 35.2°C · Low 26.8°C · 134 mm rain
- Budge Budge in MayIndia · 21 kmHigh 35.1°C · Low 27.1°C · 122 mm rain
- Shrīrāmpur in MayIndia · 21 kmHigh 35.2°C · Low 26.7°C · 134 mm rain
- Bārāsat in MayIndia · 21 kmHigh 34.8°C · Low 26.8°C · 140 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 Kolkata) is explained once on the Kolkata year overview and on the Sources, method and limits page.
Howrah, Maheshtala and Budge Budge lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.