5-day weather forecast Chennai 18-03-2026
Weather forecast Chennai today 18.03.2026: sunny, temperature from 25 °C to 31 °C.
Precipitation probability 79%. Wind up to 6.81 m/s (gusts 9 m/s). Air humidity 59–78%, atmospheric pressure 756–760 mm Hg, UV index up to 12.6.
Sunset 18:20
| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 26 °C | 0% | 8% | 74% | 758 mm Hg | SE 145° 4.69 (7.33) m/s | 0 |
| 01:00 |  Partly cloudy | 26 °C | 0% | 26% | 75% | 757 mm Hg | SSE 163° 3.89 (6.11) m/s | 0 |
| 02:00 | Partly cloudy | 26 °C | 0% | 40% | 75% | 756 mm Hg | SSE 167° 3.39 (5.28) m/s | 0 |
| 03:00 |  Patchy rain possible | 26 °C | 79% (0.01 mm/hr) | 51% | 77% | 757 mm Hg | S 176° 3.11 (4.89) m/s | 0 |
| 04:00 | Patchy rain possible | 25 °C | 60% (0.01 mm/hr) | 77% | 78% | 757 mm Hg | SSE 168° 3.39 (5.39) m/s | 0 |
| 05:00 | Patchy rain possible | 25 °C | 62% (0.03 mm/hr) | 72% | 78% | 758 mm Hg | S 174° 2.89 (4.67) m/s | 0 |
| 06:00 |  Patchy rain possible | 25 °C | 70% (0.04 mm/hr) | 76% | 78% | 758 mm Hg | S 188° 2.11 (3.42) m/s | 0 |
| 07:00 | Patchy rain possible | 27 °C | 69% (0.03 mm/hr) | 71% | 73% | 759 mm Hg | S 188° 2.19 (2.97) m/s | 0.9 |
| 08:00 | Patchy rain possible | 28 °C | 73% (0.02 mm/hr) | 88% | 68% | 760 mm Hg | S 174° 2.61 (3.31) m/s | 3.1 |
| 09:00 |  Sunny | 29 °C | 0% | 0% | 62% | 760 mm Hg | SSE 150° 3.39 (4.03) m/s | 6.5 |
| 10:00 | Sunny | 29 °C | 0% | 0% | 59% | 760 mm Hg | SE 135° 4.5 (5.17) m/s | 9.9 |
| 11:00 | Sunny | 30 °C | 0% | 0% | 60% | 759 mm Hg | SE 126° 5.61 (6.44) m/s | 12.2 |
| 12:00 | Sunny | 29 °C | 0% | 0% | 61% | 758 mm Hg | SE 125° 6.39 (7.36) m/s | 12.6 |
| 13:00 | Sunny | 30 °C | 0% | 0% | 61% | 758 mm Hg | SE 129° 6.31 (7.25) m/s | 10.8 |
| 14:00 | Sunny | 29 °C | 0% | 0% | 61% | 757 mm Hg | SE 130° 6.39 (7.36) m/s | 7.6 |
| 15:00 | Sunny | 29 °C | 0% | 0% | 61% | 757 mm Hg | SE 131° 6.61 (7.58) m/s | 4.1 |
| 16:00 |  Partly cloudy | 31 °C | 0% | 50% | 66% | 757 mm Hg | SE 128° 6.81 (8.06) m/s | 1.5 |
| 17:00 | Sunny | 28 °C | 0% | 0% | 68% | 757 mm Hg | SE 124° 6.81 (8.83) m/s | 0.3 |
| 18:00 | Clear | 27 °C | 0% | 0% | 73% | 757 mm Hg | SE 124° 6.19 (8.75) m/s | 0 |
| 19:00 | Clear | 27 °C | 0% | 17% | 76% | 758 mm Hg | ESE 122° 6.19 (9) m/s | 0 |
| 20:00 |  Cloudy | 27 °C | 0% | 69% | 77% | 758 mm Hg | SE 124° 6 (8.83) m/s | 0 |
| 21:00 | Cloudy | 27 °C | 0% | 83% | 77% | 758 mm Hg | SE 128° 5.69 (8.31) m/s | 0 |
| 22:00 | Clear | 27 °C | 0% | 6% | 78% | 758 mm Hg | SE 134° 5.61 (8.17) m/s | 0 |
| 23:00 | Clear | 27 °C | 0% | 17% | 78% | 758 mm Hg | SSE 154° 4.5 (6.86) m/s | 0 |
Frequently asked questions about the weather in Chennai
What is the weather in Chennai today?
Today in Chennai the temperature ranges from 25 °C to 31 °C, wind up to 6.81 m/s. Check the detailed hourly forecast above for more information.
Will it rain in Chennai this week?
The precipitation probability in Chennai today is 79%. View the full multi-day forecast above to see the rain chances for each upcoming day.
What is the wind speed in Chennai today?
The wind speed in Chennai today reaches up to 6.81 m/s with gusts up to 9 m/s. Check the detailed wind chart above for hourly wind data.
What is the humidity in Chennai today?
The air humidity in Chennai today ranges from 59% to 78%. View the humidity chart above for hourly details.
What is the UV index in Chennai today?
The UV index in Chennai today reaches up to 12.6. Check the UV index chart above for hourly values throughout the day.
What is the atmospheric pressure in Chennai today?
The atmospheric pressure in Chennai today ranges from 756 to 760 mm Hg. View the pressure chart above for hourly readings.
What is the cloud cover in Chennai today?
Cloud cover in Chennai today reaches up to 88%. Check the cloud cover chart above for hourly details throughout the day.
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.