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Weather in Chennai - 14-day forecast

Detailed weather forecast for Chennai, India: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Chennai
today🌧️ 29°💧 0.8 mm
Sun🌧️ 34°💧 0.5 mm
Mon🌧️ 35°💧 0.2 mm
Tue☁️ 35°💧 0.2 mm
Wed🌧️ 34°💧 1.9 mm
Thu🌧️ 33°💧 2.9 mm
Fri🌧️ 31°💧 2.4 mm
Sat🌧️ 26°💧 5.8 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Chennai, the forecast high is 29°C. Typical daytime temperatures at this time of year range from 31°C to 34°C, so it will be exceptionally cool. It is cooler than 96% of similar days.

29°Cexceptionally cool
usually 31°C–34°C
cooler than 96% of similar days
night: exceptionally warm rain: less rain than usual wind: exceptionally strong
34°Cwarmer than usual
usually 31°C–34°C
warmer than 73% of similar days
night: exceptionally warm rain: less rain than usual wind: exceptionally strong
35°Cexceptionally warm
usually 31°C–34°C
warmer than 94% of similar days
night: exceptionally warm rain: less rain than usual wind: exceptionally strong
35°Cexceptionally warm
usually 31°C–34°C
warmer than 96% of similar days
night: exceptionally warm rain: exceptionally dry wind: exceptionally strong
34°Cwarmer than usual
usually 31°C–34°C
warmer than 85% of similar days
night: exceptionally warm rain: typical rainfall wind: typical
33°Cnear normal
usually 31°C–34°C
night: exceptionally warm rain: typical rainfall wind: exceptionally strong
31°Ccooler than usual
usually 31°C–34°C
cooler than 76% of similar days
night: exceptionally warm rain: typical rainfall wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
25°33°40° 1981: 30°C1982: 35°C1983: 30°C1984: 34°C1985: 32°C1986: 35°C1987: 34°C1988: 30°C1989: 34°C1990: 32°C1991: 33°C1992: 34°C1993: 32°C1994: 33°C1995: 31°C1996: 30°C1997: 32°C1998: 33°C1999: 33°C2000: 33°C2001: 33°C2002: 34°C2003: 34°C2004: 31°C2005: 32°C2006: 31°C2007: 30°C2008: 31°C2009: 34°C2010: 33°C2011: 33°C2012: 33°C2013: 30°C2014: 34°C2015: 31°C2016: 34°C2017: 30°C2018: 35°C2019: 33°C2020: 31°C2021: 32°C2022: 31°C2023: 32°C2024: 33°C2025: 32°C 2026 forecast: 33°C current forecast 33°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 32°C by day. The coolest year was 1983 (30°C) and the warmest was 1986 (35°C). The current forecast averages 33°C - higher than in 69% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Chennai

Chennai - 14-day weather forecast infographic

Chennai 30 & 45-day weather - long-range outlook

Next 16 days · forecast
31°
around 28° at night · days with rain: 11
Weeks 3-4 · avg for September
34°
around 25° at night · rain chance 54%
Weeks 5-7 · avg for October
33°
around 24° at night · rain chance 45%
The 30 & 45-day outlook for Chennai: the next 16 days are a numerical forecast updated daily - on average 31° by day and 28° at night. Further out we rely on multi-year climate averages: around 34° in September, and about 33° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Chennai

Saturday5 September 2026
🌧️29°light rain
sunrise 05:58 · sunset 18:17 · night 27° · evening 31° · rain 0.8 mm · humidity 67% · wind 8 m/s · clouds 99%
Sunday6 September 2026
🌧️34°light rain
sunrise 05:58 · sunset 18:17 · night 30° · evening 30° · rain 0.45 mm · humidity 50% · wind 8 m/s · clouds 99%
Monday7 September 2026
🌧️35°light rain
sunrise 05:58 · sunset 18:16 · night 29° · evening 31° · rain 0.2 mm · humidity 47% · wind 10 m/s · clouds 82%
Tuesday8 September 2026
☁️35°overcast clouds
sunrise 05:58 · sunset 18:15 · night 29° · evening 31° · rain 0.15 mm · humidity 46% · wind 7 m/s · clouds 90%
Wednesday9 September 2026
🌧️34°light rain
sunrise 05:58 · sunset 18:15 · night 29° · evening 31° · rain 1.88 mm · humidity 49% · wind 5 m/s · clouds 100%
Thursday10 September 2026
🌧️33°light rain
sunrise 05:58 · sunset 18:14 · night 28° · evening 30° · rain 2.88 mm · humidity 52% · wind 7 m/s · clouds 100%
Friday11 September 2026
🌧️31°light rain
sunrise 05:58 · sunset 18:13 · night 28° · evening 29° · rain 2.4 mm · humidity 60% · wind 5 m/s · clouds 100%
Saturday12 September 2026
🌧️26°light rain
sunrise 05:58 · sunset 18:13 · night 27° · evening 29° · rain 5.79 mm · humidity 79% · wind 5 m/s · clouds 100%
Sunday13 September 2026
🌧️26°light rain
sunrise 05:58 · sunset 18:12 · night 25° · evening 26° · rain 8.55 mm · humidity 81% · wind 7 m/s · clouds 100%
Monday14 September 2026
🌧️26°moderate rain
sunrise 05:58 · sunset 18:11 · night 26° · evening 29° · rain 35.76 mm · humidity 78% · wind 6 m/s · clouds 100%
Tuesday15 September 2026
🌧️27°light rain
sunrise 05:58 · sunset 18:10 · night 27° · evening 27° · rain 0.33 mm · humidity 73% · wind 7 m/s · clouds 98%
Wednesday16 September 2026
☁️29°overcast clouds
sunrise 05:58 · sunset 18:10 · night 27° · evening 29° · rain 15.09 mm · humidity 63% · wind 9 m/s · clouds 100%
Thursday17 September 2026
🌧️32°light rain
sunrise 05:58 · sunset 18:09 · night 28° · evening 30° · rain 1.89 mm · humidity 55% · wind 8 m/s · clouds 60%
Friday18 September 2026
🌧️33°moderate rain
sunrise 05:58 · sunset 18:08 · night 28° · evening 30° · rain 7.29 mm · humidity 54% · wind 6 m/s · clouds 90%
Saturday19 September 2026
🌧️33°light rain
sunrise 05:58 · sunset 18:08 · night 28° · evening 30° · rain 2.25 mm · humidity 51% · wind 7 m/s · clouds 100%
Sunday20 September 2026
🌧️33°light rain
sunrise 05:58 · sunset 18:07 · night 28° · evening 29° · rain 1.68 mm · humidity 49% · wind 7 m/s · clouds 92%

UV index in Chennai - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTChennai03681111+8.2UV VERY HIGHtoday, daily maxSPF 50, long sleeves and shade between 10:00 and16:00.Unprotected fair skin may burn in about 25 min8Sat5.096Sun6.099Mon7.099Tue8.099Wed9.099Thu10.097Fri11.094Sat12.092Sun13.093Mon14.093Tue15.096Wed16.099Thu17.098Fri18.097Sat19.096Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Chennai is 8 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Sea temperature - Chennai

Water today
31°C
Week avg
31°C
Waves today
0.7 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 31°C6.09 31°C7.09 31°C8.09 31°C9.09 31°C10.09 31°C11.09 31°C12.09 31°C13.09 31°C
Average sea temperature through the year:
Jan 27°CFeb 28°CMar 30°CApr 31°CMay 31°CJun 31°CJul 30°CAug 30°CSep 30°COct 30°CNov 29°CDec 27°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Chennai weather through the year

Chennai - annual climate

Warmest, driest months on average: January, February, March, November.

Nearby and related places

BangaloreJaffnaTrincomaleeAnuradhapuraBatticaloaDelhiIndoreAhmadabadJaipurSurat

FAQ - Chennai weather

What is the weather like in Chennai today?
Today it is about 29° during the day and 27° at night, light rain.
How far ahead can I check the forecast for Chennai?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.