Monthly climate guide
Chennai weather in December
December in Chennai is typically hot, with average daytime highs around 28°C (82°F) and night-time lows near 22°C (72°F). The month usually brings about 136 mm of rain (wet) and is a mix of sun and cloud. Daytime highs are about the same as November and about the same as January.
What stands out in December
- December falls in Chennai's wetter season, when heavy showers are common.
- Even after dark it stays around 22°C, so sleeping can feel warm.
- Chennai is usually about 2°C cooler than Mysore, 400 km away, in December.
- It's humid — around 80% — so the heat feels heavier.
December is typically Chennai's coolest month.
Avg high
28°C
82°F
Avg low
22°C
72°F
Rainfall
136 mm
wet
Humidity
80%
relative
Sky
50%
cloud · a mix of sun and cloud
Chennai weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 28°C / 83°F | 21°C / 70°F | 12 mm | 76% | 30% |
| February | 31°C / 88°F | 22°C / 71°F | 6 mm | 71% | 28% |
| March | 35°C / 94°F | 24°C / 75°F | 7 mm | 65% | 24% |
| April | 36°C / 98°F | 27°C / 80°F | 21 mm | 65% | 34% |
| May | 36°C / 97°F | 28°C / 82°F | 49 mm | 65% | 52% |
| June | 35°C / 96°F | 27°C / 81°F | 79 mm | 64% | 78% |
| July | 34°C / 94°F | 26°C / 79°F | 115 mm | 68% | 83% |
| August | 33°C / 91°F | 26°C / 78°F | 151 mm | 73% | 82% |
| September | 32°C / 89°F | 25°C / 78°F | 152 mm | 78% | 73% |
| October | 31°C / 87°F | 25°C / 77°F | 206 mm | 79% | 62% |
| November | 29°C / 84°F | 24°C / 74°F | 284 mm | 81% | 60% |
| December | 28°C / 82°F | 22°C / 72°F | 136 mm | 80% | 50% |
What to pack for December
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is December a good time to visit Chennai?
Compare the months in the chart above to find your ideal window.
Best time to visit Chennai →Other India cities in December
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Chennai weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/india/chennai/december
<a href="https://weathercompare.eu/weather/india/chennai/december">Chennai weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/india/chennai" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Chennai weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/india/chennai/december">Chennai weather in December</a> – WeatherCompare</p>
Chennai in December: quick answers
Is December a good time to visit Chennai?
Yes. December is one of the best months for Chennai, with highs around 28°C and about 136 mm of rain.
How warm is Chennai in December?
Average highs are about 28°C (82°F) and average lows about 22°C (72°F), based on 10 years of daily data.
Does it rain a lot in Chennai in December?
Chennai typically gets around 136 mm of rain in December — wet.
Figures are long-term averages for the area around Chennai (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.