Climate averages 1991–2020
Idaiyarpālaiyam weather
in September.
A hot, moderately wet month: the 7th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Idaiyarpālaiyam: daytime highs average 28.4°C and nights cool to about 21.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 84 mm of rain on roughly 16 days, which makes September a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average September day.
The nearest other city in this atlas is Coimbatore (6 km away). In September its highs average 29.4°C, 1.0°C warmer than Idaiyarpālaiyam, with 84 mm of rain.
Among the 692 cities listed in India, Idaiyarpālaiyam ranks joint 604th of 692 for the warmest September highs and joint 79th of 692 for the driest September (rainfall, lowest first). The mean September high of those 692 cities is 30.7°C; Idaiyarpālaiyam is 2.2°C cooler than that mean.
From September to October, average highs fall by 0.4°C to 28.0°C, and monthly rainfall rises from 84 mm to 167 mm.
The annual picture
September 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
Idaiyarpālaiyam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C18.0°C | 18.0°C | 8.4 | 2.2 | 11.612 h |
| February | 31.6°C19.3°C | 19.3°C | 12 | 2.4 | 11.812 h |
| March | 34.0°C21.5°C | 21.5°C | 21 | 4.1 | 12.112 h |
| April | 34.2°C23.4°C | 23.4°C | 40 | 9.3 | 12.412 h |
| May | 32.2°C23.5°C | 23.5°C | 70 | 14.9 | 12.613 h |
| June | 28.5°C22.2°C | 22.2°C | 101 | 14.8 | 12.813 h |
| July | 27.6°C21.5°C | 21.5°C | 106 | 15.3 | 12.713 h |
| August | 27.7°C21.4°C | 21.4°C | 97 | 15.1 | 12.512 h |
| September, selected | 28.4°C21.6°C | 21.6°C | 84 | 16.0 | 12.212 h |
| October | 28.0°C21.2°C | 21.2°C | 167 | 21.3 | 11.912 h |
| November | 27.3°C20.1°C | 20.1°C | 132 | 15.9 | 11.612 h |
| December | 27.3°C18.5°C | 18.5°C | 50 | 7.2 | 11.511 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
September in nearby cities
- Coimbatore in SeptemberIndia · 6 kmHigh 29.4°C · Low 21.9°C · 84 mm rain
- Palakkad in SeptemberIndia · 42 kmHigh 29.0°C · Low 23.0°C · 117 mm rain
- Pollachi in SeptemberIndia · 43 kmHigh 28.9°C · Low 22.1°C · 81 mm rain
- Velampālaiyam in SeptemberIndia · 44 kmHigh 31.7°C · Low 22.9°C · 137 mm rain
- Tiruppur in SeptemberIndia · 48 kmHigh 32.3°C · Low 23.3°C · 79 mm rain
- Ooty in SeptemberIndia · 48 kmHigh 19.9°C · Low 13.1°C · 145 mm rain
- Dharapuram in SeptemberIndia · 74 kmHigh 32.0°C · Low 23.1°C · 64 mm rain
- Valparai in SeptemberIndia · 79 kmHigh 23.5°C · Low 18.2°C · 356 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 Idaiyarpālaiyam) is explained once on the Idaiyarpālaiyam year overview and on the Sources, method and limits page.
Coimbatore lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.