Health effects can be felt by sensitive groups, including children, older adults, and people with respiratory or heart conditions. The general public is less likely to be affected.

Health & Activity Advice

⚠ Take Precautions

UV index is 7 today — high. Apply sunscreen before heading out, and consider a hat or shade during peak hours (roughly late morning to mid-afternoon).

Health effects can be felt by sensitive groups, including children, older adults, and people with respiratory or heart conditions. The general public is less likely to be affected.

Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.

High humidity (89%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.

Nearby Regional Outlook

Chennai Weather Radar

Live precipitation · Cloud cover · Wind

View live radar →

Frequently Asked Questions

What is the hottest month in Chennai?

The hottest month in Chennai is typically June, with daytime highs averaging around 35.4°C (96°F), based on 10 years of historical weather data. Overnight lows during this period average near 27.8°C (82°F). Take extra precautions during this time stay hydrated and avoid strenuous outdoor activity in peak afternoon heat.

What is the coldest month in Chennai?

The coldest month in Chennai is typically January, with overnight lows averaging around 22.1°C (72°F) and daytime highs near 28.1°C (83°F), based on 10 years of historical weather data.

Does Chennai have a rainy season?

Chennai doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. November is the wettest month on average (about 323 mm), while February is the driest (about 5 mm).

What's the best time of year to visit Chennai?

The best time to visit Chennai is typically January to February, when daytime highs average a comfortable 29°C (84°F). Rainfall during this window averages around 17 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Atmospheric Details

Wind

10 km/h

S · Light Breeze · Max 13 km/h

Humidity

89 %

High · feels muggy

UV Index

High

Visibility

10 km

Excellent

Pressure

1005 hPa

Stable

Dew Point

27°C

Very humid

Today vs Normal

34°C+2° above normal

The long-term average high for today is 32°C.

26 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

Red = above normal, blue = at or below · last 12 days

Air Quality

Unhealthy for Sensitive Groups

Health effects can be felt by sensitive groups, including children, older adults, and people with respiratory or heart conditions. The general public is less likely to be affected.

Health & Activity Advice

⚠ Take Precautions

UV index is 7 today — high. Apply sunscreen before heading out, and consider a hat or shade during peak hours (roughly late morning to mid-afternoon).

Health effects can be felt by sensitive groups, including children, older adults, and people with respiratory or heart conditions. The general public is less likely to be affected.

Morning before 10 AM or evening after 4 PM is the more comfortable window for outdoor activity today.

High humidity (89%) combined with the heat means it will feel more uncomfortable than the air temperature alone suggests — stay hydrated if you're active outside.