Chennai, Tamil Nadu Weather
Chennai weather this week
Over the next 7 days in Chennai, daytime highs range from 30°C to 33°C and night-time lows from 22°C to 25°C. The warmest afternoon is likely on Friday at 33°C, while the coolest night is expected on Friday night at 22°C. Temperatures stay fairly steady through the week.
Rain is most likely today, with roughly 1.4 mm forecast in total over the week.
Winds stay mostly light this week, peaking at about 25 km/h on Wednesday. The UV index reaches 7 (high) around midday; a hat and sunscreen are a good idea outdoors. Average humidity is a comfortable 68% or so.
| Day | Conditions | High / Low | Rain chance | Rain | Max wind |
|---|---|---|---|---|---|
| Today (Saturday) | Light drizzle | 30° / 25° | 50% | 1.4 mm | 18 km/h |
| Tomorrow (Sunday) | Overcast | 31° / 25° | 8% | 0.0 mm | 20 km/h |
| Monday | Overcast | 31° / 25° | 10% | 0.0 mm | 18 km/h |
| Tuesday | Overcast | 31° / 24° | 4% | 0.0 mm | 20 km/h |
| Wednesday | Overcast | 31° / 23° | 41% | 0.0 mm | 25 km/h |
| Thursday | Overcast | 32° / 24° | 43% | 0.0 mm | 22 km/h |
| Friday | Overcast | 33° / 22° | 44% | 0.0 mm | 15 km/h |
Hourly forecast in Chennai
16-day forecast for Chennai
Check any date
Chennai air quality & conditions
Air quality index
Today's outlook for Chennai
At 12:00 local time it is 30°C in Chennai under mostly clear skies, feeling like 33°C. Today's forecast high is 30°C and the low is 25°C, and the day overall looks drizzly. There is a 50% chance of a shower today. Winds are blowing at about 18 km/h from the north-east. Humidity is 59%.
Explore nearby
Weather articles
Weather news
Climate of Chennai: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), May is usually the hottest month in Chennai, with average daytime highs around 36°C. January is the coolest, when nights typically fall to about 21°C.
The area receives about 1250 mm of rain in a typical year. Most of it falls from July to December (around 85% of the yearly total), and November is the wettest month at roughly 292 mm. The driest stretch is January to March, with under 20 mm a month.
For outdoor plans and travel, January to February usually offer the most comfortable weather in Chennai, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 28° | 21° | 16 mm | 77% |
| Feb | 30° | 21° | 6 mm | 71% |
| Mar | 34° | 23° | 15 mm | 66% |
| Apr | 35° | 26° | 26 mm | 66% |
| May | 36° | 27° | 55 mm | 65% |
| Jun | 35° | 27° | 68 mm | 64% |
| Jul | 34° | 26° | 108 mm | 67% |
| Aug | 33° | 25° | 132 mm | 72% |
| Sep | 32° | 25° | 145 mm | 77% |
| Oct | 30° | 25° | 264 mm | 80% |
| Nov | 28° | 23° | 292 mm | 82% |
| Dec | 27° | 22° | 126 mm | 80% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Chennai. Values describe typical conditions, not a forecast.
About Chennai weather
Chennai lies in Tamil Nadu's eastern coastal plain along the Bay of Bengal, which — unlike most of India — gets its main rains from the retreating north-east monsoon — about 280 km north-east of Salem. Expect a hot summer (April–June) with highs often in the high 30s°C. The rainy season is the north-east monsoon (October–December) — Tamil Nadu's principal rainy season — with a weaker south-west monsoon contribution (June–September) mainly over the western interior. Winter brings a mild, short winter (December–January) with little temperature drop near the coast. This page shows live, auto-refreshing weather for Chennai: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: Asia/Kolkata.
Frequently asked questions
Chennai is about 280 km north-east of Salem, in Tamil Nadu.
Chennai gets the north-east monsoon (October–December) — Tamil Nadu's principal rainy season — with a weaker south-west monsoon contribution (June–September) mainly over the western interior.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Chennai's exact coordinates. No fixed schedule, the page updates whenever you load it.
May is usually the hottest month in Chennai, with average daytime highs of about 36°C and nights around 27°C.
The coldest nights come in January, when the average low is about 21°C and daytime highs reach around 28°C. Winters are mild, so heavy woollens are rarely needed.
Chennai receives about 1250 mm of rain in a typical year. November is the wettest month at roughly 292 mm, and the main rainy period is July to December.
January to February usually offer the most comfortable weather in Chennai, with mild daytime temperatures and little rain.
In November Chennai typically sees daytime highs near 28°C and lows near 23°C, with about 292 mm of rain over the month and average humidity around 82%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Chennai updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Chennai's day-to-day weather is shaped by its position in Tamil Nadu, India — close enough to the coast for humidity to matter. See the hourly weather forecast or the air quality index for more detail.