5-day weather forecast Chennai 21-03-2026
Weather forecast Chennai Saturday 21 March 21.03.2026: sunny, temperature from 26 °C to 31 °C.
No precipitation expected. Wind up to 8.11 m/s (gusts 9.86 m/s). Air humidity 64–81%, atmospheric pressure 755–759 mm Hg, UV index up to 11.9.
Sunrise 06:16
Sunset 18:20
Sunset 18:20
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Thundery outbreaks possible | 27 °C | 0% | 29% | 79% | 758 mm Hg | SSE 160° 3.81 (5.61) m/s | 0 |
| 01:00 |  Partly cloudy | 27 °C | 0% | 41% | 79% | 757 mm Hg | S 176° 3.19 (4.75) m/s | 0 |
| 02:00 | Partly cloudy | 27 °C | 0% | 35% | 80% | 757 mm Hg | S 183° 3.31 (4.92) m/s | 0 |
| 03:00 | Partly cloudy | 26 °C | 0% | 33% | 81% | 757 mm Hg | S 175° 3.5 (5.28) m/s | 0 |
| 04:00 | Partly cloudy | 26 °C | 0% | 38% | 81% | 757 mm Hg | S 179° 3.61 (5.47) m/s | 0 |
| 05:00 | Partly cloudy | 26 °C | 0% | 41% | 81% | 758 mm Hg | S 180° 4.11 (6.17) m/s | 0 |
| 06:00 |  Partly cloudy | 26 °C | 0% | 50% | 81% | 758 mm Hg | S 181° 4.5 (6.75) m/s | 0.1 |
| 07:00 | Partly cloudy | 27 °C | 0% | 49% | 77% | 758 mm Hg | S 183° 5.19 (6.83) m/s | 0.8 |
| 08:00 | Partly cloudy | 28 °C | 0% | 39% | 71% | 759 mm Hg | S 180° 5.5 (6.72) m/s | 2.8 |
| 09:00 |  Sunny | 29 °C | 0% | 12% | 66% | 759 mm Hg | S 174° 5.5 (6.42) m/s | 5.9 |
| 10:00 | Sunny | 30 °C | 0% | 6% | 64% | 759 mm Hg | SSE 161° 5.69 (6.56) m/s | 9.2 |
| 11:00 | Sunny | 30 °C | 0% | 6% | 64% | 758 mm Hg | SSE 152° 6.39 (7.36) m/s | 11.5 |
| 12:00 | Sunny | 31 °C | 0% | 8% | 64% | 758 mm Hg | SSE 147° 7.19 (8.28) m/s | 11.9 |
| 13:00 | Sunny | 30 °C | 0% | 6% | 64% | 757 mm Hg | SE 145° 7.69 (8.86) m/s | 10.1 |
| 14:00 | Sunny | 30 °C | 0% | 6% | 65% | 756 mm Hg | SE 144° 8 (9.19) m/s | 7 |
| 15:00 | Sunny | 30 °C | 0% | 6% | 67% | 755 mm Hg | SE 145° 8.11 (9.33) m/s | 3.7 |
| 16:00 | Sunny | 29 °C | 0% | 5% | 69% | 755 mm Hg | SE 142° 7.61 (9.17) m/s | 1.3 |
| 17:00 | Sunny | 28 °C | 0% | 3% | 73% | 756 mm Hg | SE 141° 7.31 (9.36) m/s | 0.2 |
| 18:00 |  Clear | 28 °C | 0% | 2% | 78% | 757 mm Hg | SE 142° 6.39 (8.72) m/s | 0 |
| 19:00 | Clear | 28 °C | 0% | 2% | 80% | 758 mm Hg | SE 137° 6.39 (8.92) m/s | 0 |
| 20:00 | Clear | 27 °C | 0% | 2% | 81% | 758 mm Hg | SE 132° 6.81 (9.5) m/s | 0 |
| 21:00 | Clear | 27 °C | 0% | 2% | 81% | 758 mm Hg | SE 128° 7.11 (9.86) m/s | 0 |
| 22:00 | Clear | 27 °C | 0% | 7% | 81% | 758 mm Hg | SE 131° 6.31 (8.69) m/s | 0 |
| 23:00 | Partly cloudy | 27 °C | 0% | 32% | 80% | 758 mm Hg | SE 138° 5 (7.22) 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.