Chennai weather in December
In December, Chennai has an average high of 27 °C81 °F and an average low of 22 °C71 °F, with about 126 mm4.9 in of precipitation. It is the 11th warmest month of the year and ranks 5th for precipitation.
How December compares with other months
Compared with November, December is 1.4 °C2.4 °F cooler on average and drier by 166 mm6.5 in. Compared with January, December is about the same temperature and wetter by 109 mm4.3 in. Daylight lasts about 11.4 hours around the middle of the month. Average relative humidity is 80% and the average cloud amount 51%.
Is December a good time to visit Chennai?
December is not among the most comfortable months by our comfort score: it is fairly wet (126 mm4.9 in) and it is humid (80%). The most comfortable months in Chennai are January.
What to wear in December
For Chennai in December, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
December in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Chennai | 2781 | 2271 | 1264.9 |
| Pallavaram | 2781 | 2271 | 1264.9 |
| Kanchipuram | 2781 | 2170 | 1264.9 |
| Tirupati | 2781 | 1865 | 712.8 |
| Vellore | 2781 | 1864 | 803.2 |
| Chittoor | 2679 | 1763 | 803.2 |
| Puducherry | 2781 | 2475 | 1305.1 |
| Nellore | 2781 | 2271 | 783.1 |
| Tiruvannamalai | 2781 | 1966 | 1044.1 |
Nearby places that are more than 1 °C1.8 °F cooler: Tirupati, Vellore, Chittoor and Tiruvannamalai.
Other months in Chennai
- January28 °C82 °F / 21 °C69 °F
- February30 °C87 °F / 21 °C70 °F
- March34 °C93 °F / 23 °C74 °F
- April36 °C96 °F / 26 °C79 °F
- May36 °C97 °F / 27 °C81 °F
- June35 °C95 °F / 27 °C80 °F
- July34 °C93 °F / 26 °C79 °F
- August33 °C91 °F / 25 °C78 °F
- September32 °C89 °F / 25 °C77 °F
- October30 °C87 °F / 25 °C77 °F
- November29 °C83 °F / 23 °C74 °F
- December27 °C81 °F / 22 °C71 °F
Frequently asked questions
How warm is Chennai in December?
In December the average high in Chennai is 27 °C (81 °F) and the average low is 22 °C (71 °F).
Does it rain a lot in Chennai in December?
On average about 126 mm (4.9 in) of precipitation falls in December; it ranks 5th of the 12 months.
Is December the warmest month in Chennai?
No. The warmest month in Chennai is May, with an average high of 36 °C (97 °F). The coldest month is January, with an average low of 21 °C (69 °F).
How long is the day in Chennai in December?
In the middle of December the day in Chennai lasts about 11.4 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Chennai in December?
The average relative humidity in December is about 80%. Combined with warm days, it can feel muggy.
How cloudy is Chennai in December?
On average about 51% of the sky is covered by cloud in December. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.