Annual mean 29°C · wettest around November · prevailing wind SW
Warmest
36.2 °C
Coldest
27.7 °C
Wettest
96%
Windiest
3.6 m/s
Prevailing
SW
2.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Chennai over the whole year is 29°C. May is the hottest month, with highs of about 36°C; January is the coldest, with lows of about 23°C. The rainy (wet) season in Chennai runs from August to December, peaking in November with a 68% chance of rain on a given day. The dry season is January to February; February is the driest month, at 10%. Winds in Chennai are highest in June, averaging 2.7 m/s (10 km/h), and lightest in October, at 1.7 m/s (6 km/h). The prevailing wind is from the SW. The clearest skies in Chennai come in March, when the sky is typically 34% covered; July is the cloudiest month, at 68%.
Month by month Chennai climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
29°C
23°C
31°C
35%
46%
1.8 m/s
7
73
0
February
31°C
23°C
33°C
10%
35%
1.8 m/s
2
60
0
March
33°C
26°C
36°C
46%
34%
1.9 m/s
0
19
0
April
35°C
28°C
39°C
44%
36%
2.3 m/s
0
2
0
May
36°C
29°C
40°C
47%
48%
2.5 m/s
0
2
0
June
35°C
29°C
38°C
48%
59%
2.7 m/s
0
4
0
July
33°C
28°C
37°C
36%
68%
2.6 m/s
0
10
0
August
33°C
28°C
37°C
41%
67%
2.4 m/s
0
10
0
September
33°C
27°C
37°C
46%
67%
2.2 m/s
0
11
0
October
32°C
26°C
36°C
52%
62%
1.7 m/s
1
13
0
November
29°C
25°C
33°C
68%
66%
1.9 m/s
4
37
0
December
28°C
24°C
31°C
54%
58%
2.3 m/s
8
61
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Chennai weather by season
Year round, Chennai has days of about 28°C at their warmest in December, its coolest month, and 36°C in May, its warmest; the coolest hours of the day run from 23°C to 29°C through the year, and the average temperature over the year is 29°C around the clock. Rain is most likely around November and least likely around February. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Chennai weather in winterDecember to February
High 29°CLow 23°CRain 33%
Winter in Chennai has typical daily highs of about 29°C and lows of about 23°C, with a 33% chance of rain on a given day.
Chennai weather in springMarch to May
High 34°CLow 28°CRain 46%
Spring in Chennai has typical daily highs of about 34°C and lows of about 28°C, with a 46% chance of rain on a given day.
Chennai weather in summerJune to August
High 34°CLow 28°CRain 42%
Summer in Chennai has typical daily highs of about 34°C and lows of about 28°C, with a 42% chance of rain on a given day.
Chennai weather in autumnSeptember to November
High 31°CLow 26°CRain 56%
Autumn in Chennai has typical daily highs of about 31°C and lows of about 26°C, with a 56% chance of rain on a given day.
When is the rainy season in Chennai?
The rainy (wet) season in Chennai runs from August to December, peaking in November with a 68% chance of rain on a given day. The dry season is January to February; February is the driest month, at 10%.
What time of year is Chennai windiest?
Winds in Chennai are highest in June, averaging 2.7 m/s (10 km/h), and lightest in October, at 1.7 m/s (6 km/h). The prevailing wind is from the SW.
What is the average temperature in Chennai year round?
The average temperature in Chennai over the whole year is 29°C. May is the hottest month, with highs of about 36°C; January is the coldest, with lows of about 23°C.