Climate averages 1991–2020
Thiruvananthapuram weather
in September.
A warm, wet month: the 9th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Thiruvananthapuram: daytime highs average 27.5°C and nights cool to about 23.9°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 172 mm of rain on roughly 20 days, which makes September a wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Neyyāttinkara (18 km away). In September its highs average 27.8°C, about as warm as Thiruvananthapuram, with 172 mm of rain.
Among the 692 cities listed in India, Thiruvananthapuram ranks joint 655th of 692 for the warmest September highs and joint 439th of 692 for the driest September (rainfall, lowest first). The mean September high of those 692 cities is 30.7°C; Thiruvananthapuram is 3.2°C cooler than that mean.
From September to October, average highs rise by 0.2°C to 27.7°C, and monthly rainfall rises from 172 mm to 295 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
Thiruvananthapuram climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C23.0°C | 23.0°C | 27 | 5.2 | 11.712 h |
| February | 29.8°C23.3°C | 23.3°C | 53 | 8.6 | 11.912 h |
| March | 29.9°C24.3°C | 24.3°C | 117 | 19.9 | 12.112 h |
| April | 29.7°C25.2°C | 25.2°C | 179 | 25.2 | 12.312 h |
| May | 29.0°C25.3°C | 25.3°C | 224 | 24.6 | 12.513 h |
| June | 27.4°C24.4°C | 24.4°C | 311 | 27.2 | 12.613 h |
| July | 27.0°C23.9°C | 23.9°C | 212 | 25.3 | 12.613 h |
| August | 27.0°C23.7°C | 23.7°C | 179 | 21.8 | 12.412 h |
| September, selected | 27.5°C23.9°C | 23.9°C | 172 | 20.1 | 12.212 h |
| October | 27.7°C23.9°C | 23.9°C | 295 | 24.8 | 11.912 h |
| November | 27.9°C23.7°C | 23.7°C | 238 | 22.0 | 11.712 h |
| December | 28.5°C23.3°C | 23.3°C | 82 | 9.8 | 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
September in nearby cities
- Neyyāttinkara in SeptemberIndia · 18 kmHigh 27.8°C · Low 24.1°C · 172 mm rain
- Kollam in SeptemberIndia · 60 kmHigh 28.1°C · Low 24.3°C · 245 mm rain
- Nāgercoil in SeptemberIndia · 63 kmHigh 29.6°C · Low 24.4°C · 62 mm rain
- Thenkasi in SeptemberIndia · 66 kmHigh 30.3°C · Low 22.2°C · 135 mm rain
- Kadayanallur in SeptemberIndia · 78 kmHigh 30.8°C · Low 22.6°C · 135 mm rain
- Tirunelveli in SeptemberIndia · 85 kmHigh 34.7°C · Low 24.6°C · 50 mm rain
- Rajapalayam in SeptemberIndia · 126 kmHigh 34.2°C · Low 23.4°C · 126 mm rain
- Kovilpatti in SeptemberIndia · 127 kmHigh 35.6°C · Low 24.7°C · 47 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 Thiruvananthapuram) is explained once on the Thiruvananthapuram year overview and on the Sources, method and limits page.
Neyyāttinkara lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.