Chennai weather in October
October in Chennai: sweltering, soaked, with very humid — a fair time to visit.
#8 of 12 months in Chennai · #539 of 604 destinations to visit in October · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Chennai climate normals — October
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 162 mm / 6.4 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 11.8 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 80 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Chennai in October — FAQ
- Is October a good time to visit Chennai?
- October in Chennai: sweltering, soaked, with very humid — a fair time to visit. It ranks #8 of 12 months for Chennai on SeasonMap's comfort score (59/100).
- What is the weather like in Chennai in October?
- In October, Chennai averages a daily high of 30.9°C and a low of 24.9°C, with about 161.5 mm of rain over roughly 19.6 rainy days.
- What is the air quality in Chennai in October?
- Chennai has a mean US Air Quality Index of about 80 in October.