5-day weather forecast Chennai Sep 25, 2026

34°28° · Patchy rain possible

Weather forecast Chennai tomorrow Sep 25, 2026: patchy rain possible, temperature from 28 °C to 34 °C.

Precipitation probability 39%. Wind up to 9.69 m/s (gusts 15.22 m/s). Air humidity 45–67%, atmospheric pressure 752–756 mm Hg, UV index up to 8.3.

Sunrise 05:58
Sunset 18:03
Full Moon100% illuminated
Moonrise 17:13 · Moonset 04:44
Chart
Table

Forecast from 28 °C to 34 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)292828282828282930303233343434343230313129282929
Precipitation (mm/hr)00.010.010.0400.010.0200.010000000.030.020.030.180.560.460.380.070.28

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)100100100100100100100100100100100100100100100100100100100989999100100
Rain chance (%)151616191616171515131211111111121317233939382030

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)7.58.118.618777.617.818.118.698.397.817.58.618.317.59.695.396.397.56.8966.316.5
Wind gust (m/s)13.6114.2215.2214.8914.1114.0313.7213.7212.8111.510.9210.199.649.839.839.3312.398.8311.7212.8913.6713.1412.5313.14
Wind direction (°)WSW 239°WSW 241°WSW 243°WSW 243°WSW 245°WSW 255°WSW 257°WSW 252°WSW 254°WSW 258°W 261°WSW 257°WSW 258°WSW 246°WSW 241°WSW 244°SW 229°SSW 198°WSW 242°W 259°WSW 255°W 260°WSW 258°WSW 251°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)636565666665666461585248454545465260535260676261

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)754753753753753754755755755756755755754753752752753753754755755755755755

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index00000000.61.94.67.288.36.83.51.40.30000000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)19.217.514.410.66.45.466.97.98.19.112.215.116.618.719.420.420.118.216.816.916.516.115.9
PM10 (µg/m³)22.920.817.212.77.76.36.97.78.79.110.415.219.421.724.825.726.6262320.921.22120.319.8
Ozone (O₃) (µg/m³)545352504948464551709511612713413713713312611510290827568
NO₂ (µg/m³)20.116.914.111.89.88.79.511.211.8107.14.83.63.13.55.58.511.112.81414.815.11515
SO₂ (µg/m³)108.87.97.67.77.98.499.610.210.710.79.686.96.87.27.57.57.47.47.67.88.1
CO (µg/m³)335256199171165182245332378343267211193195221289381450476479470449417388

Chennai on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.