5-day weather forecast Chennai 18-05-2026
Weather forecast Chennai tomorrow 18.05.2026: sunny, temperature from 29 °C to 35 °C.
Precipitation probability 100%. Wind up to 10.39 m/s (gusts 14.14 m/s). Air humidity 53–80%, atmospheric pressure 752–755 mm Hg, UV index up to 9.7.
Sunrise 05:43
Sunset 18:28
Sunset 18:28
Waxing Crescent2% illuminated
Moonrise 06:49 · Moonset 20:20
Moonrise 06:49 · Moonset 20:20
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy light rain with thunder | 30 °C | 100% (0.93 mm/hr) | 78% | 77% | 753 mm Hg | SSW 202° 7.69 (10.67) m/s | 0 |
| 01:00 |  Clear | 30 °C | 0% | 22% | 77% | 752 mm Hg | SSW 201° 7.61 (10.44) m/s | 0 |
| 02:00 |  Thundery outbreaks possible | 30 °C | 0% | 49% | 77% | 752 mm Hg | SSW 197° 7.19 (9.97) m/s | 0 |
| 03:00 | Thundery outbreaks possible | 29 °C | 0% | 54% | 76% | 752 mm Hg | SSW 198° 6.69 (9.33) m/s | 0 |
| 04:00 | Thundery outbreaks possible | 29 °C | 0% | 44% | 76% | 752 mm Hg | SSW 194° 6.39 (8.89) m/s | 0 |
| 05:00 | Thundery outbreaks possible | 29 °C | 0% | 45% | 76% | 753 mm Hg | SSW 193° 6.81 (9.5) m/s | 0 |
| 06:00 |  Thundery outbreaks possible | 29 °C | 0% | 32% | 75% | 753 mm Hg | SSW 196° 6.5 (8.92) m/s | 0.2 |
| 07:00 |  Partly cloudy | 30 °C | 0% | 48% | 70% | 754 mm Hg | SSW 199° 7.19 (9.61) m/s | 0.8 |
| 08:00 | Partly cloudy | 31 °C | 0% | 50% | 64% | 754 mm Hg | SSW 202° 7.11 (9.17) m/s | 1.9 |
| 09:00 | Partly cloudy | 32 °C | 0% | 32% | 60% | 755 mm Hg | SSW 205° 6.5 (8.36) m/s | 3.7 |
| 10:00 | Partly cloudy | 33 °C | 0% | 32% | 57% | 754 mm Hg | SSW 199° 5.89 (7.47) m/s | 7.3 |
| 11:00 | Partly cloudy | 34 °C | 0% | 29% | 54% | 754 mm Hg | S 190° 5.61 (7) m/s | 9.7 |
| 12:00 |  Sunny | 35 °C | 0% | 24% | 53% | 753 mm Hg | S 178° 6.39 (8.28) m/s | 9.4 |
| 13:00 | Sunny | 35 °C | 0% | 23% | 54% | 752 mm Hg | SSE 163° 8.11 (9.94) m/s | 8.5 |
| 14:00 | Sunny | 34 °C | 0% | 20% | 55% | 752 mm Hg | SSE 159° 9.61 (12.5) m/s | 5.5 |
| 15:00 | Sunny | 33 °C | 0% | 19% | 63% | 752 mm Hg | SSE 162° 10.39 (14.14) m/s | 2.2 |
| 16:00 | Sunny | 31 °C | 0% | 13% | 71% | 752 mm Hg | SSE 162° 10 (13.61) m/s | 0.6 |
| 17:00 | Sunny | 31 °C | 0% | 10% | 74% | 752 mm Hg | SSE 167° 9.69 (13.42) m/s | 0.2 |
| 18:00 | Clear | 31 °C | 0% | 6% | 77% | 752 mm Hg | SSE 167° 9.69 (13.69) m/s | 0 |
| 19:00 | Clear | 31 °C | 0% | 5% | 78% | 753 mm Hg | S 176° 9.89 (13.67) m/s | 0 |
| 20:00 | Clear | 30 °C | 0% | 5% | 78% | 754 mm Hg | S 182° 9.69 (13.42) m/s | 0 |
| 21:00 | Clear | 30 °C | 0% | 6% | 79% | 754 mm Hg | S 187° 9.81 (13.58) m/s | 0 |
| 22:00 | Clear | 30 °C | 0% | 9% | 80% | 754 mm Hg | S 189° 9.81 (13.56) m/s | 0 |
| 23:00 | Clear | 30 °C | 0% | 8% | 79% | 754 mm Hg | SSW 193° 9.39 (13.06) m/s | 0 |
Chennai on the map
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.