5-day weather forecast Chennai 18-08-2026

Weather forecast Chennai Tuesday, August 18 18.08.2026: partly cloudy, temperature from 28 °C to 34 °C.

Precipitation probability 28%. Wind up to 6.61 m/s (gusts 10.67 m/s). Air humidity 46–76%, atmospheric pressure 755–758 mm Hg, UV index up to 11.5.

Sunrise 05:56
Sunset 18:28
First Quarter37% illuminated
Moonrise 10:47 · Moonset 22:33
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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)292929282828293031323333333432313130303030292929
Precipitation (mm/hr)00.0400.020.10.17000000000000000000

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 (%)477818868578171613131122192945445449652741294954
Rain chance (%)101782027288532222356781079799

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)6.616.115.54.313.613.192.392.693.113.112.52.693.614.696.196.115.3165.815.614.695.695.315.19
Wind gust (m/s)10.679.588.787.115.835.253.833.834.224.113.223.54.786.398.538.617.588.898.698.337.178.568.147.75
Wind direction (°)S 191°SSW 195°SSW 203°SW 220°SW 234°WSW 239°WSW 238°WSW 255°WNW 284°NW 309°NNW 338°NE 37°ENE 64°ENE 76°E 86°ESE 104°ESE 122°SE 136°SE 143°SE 145°S 177°S 186°S 178°SSW 205°

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 (%)727275767676736454494648484752596165676970696868

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)757756756755755756757757758758758757756755755755755755756756757758758758

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 Index0000000.212.96.29.411.511.36.83.31.90.80.2000000

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.