Chennai weather in December
December in Chennai: hot, soaked, with very humid — a good time to visit.
#5 of 12 months in Chennai · #380 of 604 destinations to visit in December · comfort 64/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Chennai climate normals — December
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 190 mm / 7.5 in | ⛈ soaked |
| Rainy days | 12 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 8.9 h/day | |
| Daylight | 11.4 h | |
| Wind | 20 km/h / 12 mph | |
| Air quality (US AQI) | 73 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Chennai in December — FAQ
- Is December a good time to visit Chennai?
- December in Chennai: hot, soaked, with very humid — a good time to visit. It ranks #5 of 12 months for Chennai on SeasonMap's comfort score (64/100).
- What is the weather like in Chennai in December?
- In December, Chennai averages a daily high of 27.7°C and a low of 22.8°C, with about 189.5 mm of rain over roughly 12 rainy days.
- What is the air quality in Chennai in December?
- Chennai has a mean US Air Quality Index of about 73 in December.