5-day weather forecast Chennai 18-03-2026
Weather forecast Chennai tomorrow 18.03.2026: sunny, temperature from 25 °C to 30 °C.
Precipitation probability 62%. Wind up to 6.89 m/s (gusts 10.11 m/s). Air humidity 58–78%, atmospheric pressure 756–760 mm Hg, UV index up to 12.8.
Sunrise 06:14
Sunset 18:20
Sunset 18:20
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 27 °C | 0% | 7% | 73% | 758 mm Hg | SE 139° 4.31 (6.58) m/s | 0 |
| 01:00 | Clear | 26 °C | 0% | 15% | 74% | 757 mm Hg | SSE 150° 4.19 (6.42) m/s | 0 |
| 02:00 |  Partly cloudy | 26 °C | 0% | 29% | 74% | 757 mm Hg | SSE 163° 3.69 (5.67) m/s | 0 |
| 03:00 | Partly cloudy | 26 °C | 0% | 45% | 76% | 757 mm Hg | SSE 165° 2.89 (4.58) m/s | 0 |
| 04:00 |  Patchy rain possible | 26 °C | 62% (0.01 mm/hr) | 55% | 77% | 758 mm Hg | S 169° 2.61 (4.17) m/s | 0 |
| 05:00 | Patchy rain possible | 25 °C | 86% (0.01 mm/hr) | 53% | 78% | 758 mm Hg | S 183° 2.69 (4.33) m/s | 0 |
| 06:00 |  Patchy rain possible | 25 °C | 69% (0.02 mm/hr) | 76% | 78% | 758 mm Hg | SSW 195° 2.89 (4.64) m/s | 0 |
| 07:00 |  Partly cloudy | 27 °C | 0% | 31% | 73% | 759 mm Hg | SSW 192° 3.31 (4.42) m/s | 0.9 |
| 08:00 | Partly cloudy | 28 °C | 0% | 27% | 67% | 759 mm Hg | S 188° 4.39 (5.42) m/s | 3.1 |
| 09:00 | Patchy rain possible | 29 °C | 75% (0.01 mm/hr) | 83% | 61% | 760 mm Hg | S 172° 4.19 (4.89) m/s | 6.4 |
| 10:00 | Patchy rain possible | 30 °C | 83% (0.01 mm/hr) | 76% | 59% | 759 mm Hg | SE 142° 5.11 (5.86) m/s | 9.9 |
| 11:00 | Patchy rain possible | 30 °C | 63% (0.01 mm/hr) | 70% | 59% | 758 mm Hg | SE 132° 6.11 (7.03) m/s | 12.3 |
| 12:00 |  Sunny | 30 °C | 0% | 0% | 59% | 758 mm Hg | SE 135° 6.5 (7.47) m/s | 12.8 |
| 13:00 | Sunny | 30 °C | 0% | 0% | 58% | 757 mm Hg | SE 135° 6.5 (7.47) m/s | 11 |
| 14:00 | Sunny | 30 °C | 0% | 0% | 58% | 757 mm Hg | SE 137° 6.61 (7.58) m/s | 7.7 |
| 15:00 | Sunny | 29 °C | 0% | 0% | 59% | 756 mm Hg | SE 137° 6.61 (7.58) m/s | 4.1 |
| 16:00 | Sunny | 29 °C | 0% | 0% | 61% | 756 mm Hg | SE 136° 6.5 (7.83) m/s | 1.5 |
| 17:00 | Sunny | 28 °C | 0% | 0% | 65% | 756 mm Hg | SE 136° 6.31 (8.19) m/s | 0.3 |
| 18:00 | Clear | 27 °C | 0% | 0% | 71% | 757 mm Hg | SE 135° 6.19 (8.89) m/s | 0 |
| 19:00 | Clear | 27 °C | 0% | 0% | 74% | 758 mm Hg | SE 133° 6 (8.86) m/s | 0 |
| 20:00 | Clear | 27 °C | 0% | 0% | 75% | 758 mm Hg | SE 133° 6.39 (9.47) m/s | 0 |
| 21:00 | Clear | 27 °C | 0% | 0% | 76% | 758 mm Hg | SE 143° 6.89 (10.11) m/s | 0 |
| 22:00 | Clear | 27 °C | 0% | 9% | 77% | 758 mm Hg | SE 145° 5.89 (8.92) m/s | 0 |
| 23:00 | Clear | 26 °C | 0% | 11% | 78% | 758 mm Hg | SSE 150° 4.19 (6.64) m/s | 0 |
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.