Climate averages 1991–2020
Chennai weather
in March.
A hot, very dry month: the 6th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a hot month in Chennai: daytime highs average 32.7°C and nights cool to about 23.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 8.2 mm of rain on roughly 1 day, which makes March a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average March day.
The nearest other city in this atlas is Tiruvottiyūr (8 km away). In March its highs average 32.6°C, about as warm as Chennai, with 5.8 mm of rain.
Among the 692 cities listed in India, Chennai ranks joint 348th of 692 for the warmest March highs and joint 192nd of 692 for the driest March (rainfall, lowest first). The mean March high of those 692 cities is 32.4°C; Chennai is 0.3°C warmer than that mean.
From March to April, average highs rise by 2.0°C to 34.7°C, and monthly rainfall rises from 8.2 mm to 15 mm.
The annual picture
March 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
Chennai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.9°C20.9°C | 20.9°C | 14 | 3.1 | 11.411 h |
| February | 30.1°C21.3°C | 21.3°C | 6.4 | 1.5 | 11.712 h |
| March, selected | 32.7°C23.2°C | 23.2°C | 8.2 | 1.3 | 12.112 h |
| April | 34.7°C26.2°C | 26.2°C | 15 | 2.4 | 12.412 h |
| May | 36.6°C28.1°C | 28.1°C | 38 | 3.8 | 12.713 h |
| June | 35.5°C27.8°C | 27.8°C | 66 | 10.8 | 12.913 h |
| July | 34.2°C27.0°C | 27.0°C | 70 | 13.9 | 12.813 h |
| August | 33.3°C26.4°C | 26.4°C | 94 | 14.7 | 12.613 h |
| September | 32.6°C26.0°C | 26.0°C | 102 | 16.1 | 12.212 h |
| October | 30.6°C24.7°C | 24.7°C | 208 | 19.3 | 11.812 h |
| November | 28.5°C23.4°C | 23.4°C | 227 | 16.4 | 11.512 h |
| December | 27.4°C22.1°C | 22.1°C | 117 | 9.1 | 11.411 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
March in nearby cities
- Tiruvottiyūr in MarchIndia · 8 kmHigh 32.6°C · Low 23.3°C · 5.8 mm rain
- Neelankarai in MarchIndia · 16 kmHigh 32.0°C · Low 23.5°C · 8.2 mm rain
- Avadi in MarchIndia · 19 kmHigh 33.6°C · Low 22.4°C · 9.3 mm rain
- Pallāvaram in MarchIndia · 19 kmHigh 32.3°C · Low 23.1°C · 8.2 mm rain
- Tambaram in MarchIndia · 24 kmHigh 32.7°C · Low 23.1°C · 8.2 mm rain
- Maraimalainagar in MarchIndia · 42 kmHigh 32.8°C · Low 22.9°C · 11 mm rain
- Arakkonam in MarchIndia · 66 kmHigh 34.8°C · Low 21.7°C · 10 mm rain
- Kanchipuram in MarchIndia · 69 kmHigh 34.4°C · Low 22.0°C · 12 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 Chennai) is explained once on the Chennai year overview and on the Sources, method and limits page.
Pallāvaram, Tambaram and Neelankarai lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.