Chennai, India Weather
Chennai hourly forecast: next 24 hours
Today's high of 90°F (32°C) is right in line with the typical September high of 90°F (32°C).
Current conditions in detail
Chennai weather tomorrow (Thursday, September 17)
Tomorrow in Chennai looks thundery outbreaks in nearby, with a high of 93° and an overnight low of 82°. There is a 41% chance of rain - plan accordingly. Winds top out near 17 mph, and the UV index reaches 10 (very high).
Chennai 14-day forecast
About the weather in Chennai
Temperature barely moves in Chennai - 6°C between the average May and the average January. Rainfall does the work instead: 14.0 inches (356 mm) in November against 5 mm (0.2 in) in February.
Chennai weather: quick facts
- Hottest month: May - highs near 95°F (35°C)
- Coldest month: January - highs near 82°F (28°C)
- Decade extremes (2015-2024): 108°F (42°C) high · 62°F (17°C) low
- Wettest month: November (21 rainy days) · Sunniest: March (11.6 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 6°C between the average warmest and coolest month · day to night: 7°C
- Months averaging 30°C or hotter: 8
- Average humidity: 75%
Temperatures through the year
January bottoms out at 82°F (28°C) in daylight, 72°F (22°C) after dark. May is the warm end of the year, averaging 95°F (35°C) by day and 82°F (28°C) overnight. Average highs hold at or above 30°C for 8 months of the year, March through October being the unbroken run.
Rain, sun and snow
Days and nights are about 7°C apart on average - narrower than about 86% of the cities we track. 3 months average under 20 mm of rain, the longest unbroken stretch running February through April. The gridded 2015-2024 daily record for this location tops out at 108°F (42°C) and bottoms at 62°F (17°C) - decade extremes, not all-time station records.
Season by season
March through May
Through March through May, Chennai is punishingly hot: 92°F (34°C) by day, 79°F (26°C) after dark, and rain comes on about 10 days over the three months. Daylight is generous - around 11.3 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
June through August
Through June through August, Chennai runs at full heat: 93°F (34°C) by day, 81°F (27°C) after dark, and rain falls on around 48 of the 90 days.
September through November
September through November brings hot afternoons here - highs near 87°F (31°C), nights near 77°F (25°C), and rain falls on around 61 of the 90 days.
December through February
Through December through February, Chennai sits firmly in the heat: 83°F (29°C) by day, 72°F (22°C) after dark, and expect showers on roughly 20 days across the season. Daylight is generous - around 10.4 hours of sun a day.
Average temperatures in Chennai by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 82° | 72° | 6 | 1.1 in | 10.4 h/day | 75% |
| February | 85° | 72° | 1 | 0.2 in | 11.3 h/day | 74% |
| March | 89° | 75° | 2 | 0.4 in | 11.6 h/day | 75% |
| April | 93° | 80° | 3 | 0.5 in | 11.6 h/day | 76% |
| May | 95° | 82° | 6 | 3.2 in | 10.8 h/day | 72% |
| June | 95° | 82° | 12 | 2.7 in | 9.6 h/day | 67% |
| July | 93° | 80° | 17 | 4.4 in | 8.6 h/day | 69% |
| August | 92° | 79° | 19 | 5.3 in | 9.0 h/day | 73% |
| September | 90° | 79° | 20 | 5.6 in | 9.1 h/day | 77% |
| October | 88° | 77° | 20 | 7.4 in | 9.5 h/day | 80% |
| November | 83° | 75° | 21 | 14.0 in | 8.1 h/day | 83% |
| December | 82° | 74° | 12 | 6.9 in | 9.5 h/day | 79% |