Weather in Chennai on 20 August 2026
Preliminary outlook for 20 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +32°C and nighttime around +28°C, average precipitation 0.8 mm, wind around 4 m/s, humidity around 69%.
This is a climate-based estimate, not a precise long-range forecast. It is replaced by hourly data when the date enters the forecast window.
+30°C
Weather archive — latest year: 2025
Partly Cloudy
Weather archive — latest year: 2025
Nighttime: +27°C
Precipitation: 0 mm
Wind: 6 — 6 m/s
Humidity: 62%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +34°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 20% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +32°C | Dew point (avg.) | +21°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +30°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 227° ← (W) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
02:57
Moonset
16:20
Moon phase
Waning Crescent
Illumination
15%
+30°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +28°C
Precipitation: 2.5 mm
Wind: 5 — 7 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 67% |
| Pressure (avg.) | 754 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +35°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +35°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 182° ↘ (SSE) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
19:08
Moonset
06:17
Moon phase
Full Moon
Illumination
100%
+30°C
Weather archive — for 2023 year
Partly Cloudy
Weather archive — for 2023 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 3 — 6 m/s
Humidity: 67%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 9 h |
| UV index | 6 | Cloud cover (avg.) | 48% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +35°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +35°C | Wind chill (avg.) | +30°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 195° → (ESE) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
08:49
Moonset
21:02
Moon phase
Waxing Crescent
Illumination
23%
+31°C
Weather archive — for 2022 year
Clear/Sunny
Weather archive — for 2022 year
Nighttime: +29°C
Precipitation: 0 mm
Wind: 4 — 4 m/s
Humidity: 65%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 43% |
| Pressure (avg.) | 754 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +35°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +35°C | Wind chill (avg.) | +31°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 209° ↓ (SSW) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
No moonrise
Moonset
13:09
Moon phase
Last Quarter
Illumination
39%
+29°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 65%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 9 h |
| UV index | 6 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 754 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 190° ↘ (SSE) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
16:56
Moonset
03:35
Moon phase
Waxing Gibbous
Illumination
83%
+30°C
Weather archive — for 2020 year
Partly Cloudy
Weather archive — for 2020 year
Nighttime: +28°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 72%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 13 h |
| UV index | 7 | Cloud cover (avg.) | 55% |
| Pressure (avg.) | 753 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +34°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +34°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 220° ↙ (WSW) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
06:58
Moonset
19:44
Moon phase
Waxing Crescent
Illumination
6%
+29°C
Weather archive — for 2019 year
Patchy rain nearby
Weather archive — for 2019 year
Nighttime: +27°C
Precipitation: 3 mm
Wind: 4 — 5 m/s
Humidity: 76%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 54% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +34°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +34°C | Wind chill (avg.) | +29°C |
| Wind gusts (max.) | 8 m/s | Wind direction (avg.) | 224° ↙ (SW) |
Sunrise
05:57
Duration
12 h 30 min
Sunset
18:27
Moonrise
21:46
Moonset
09:31
Moon phase
Waning Gibbous
Illumination
64%
Weather in Chennai on 20 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+34°C
|
+27°C
|
+30°C | 13 h | 7 | 62% | 6 — 6 m/s |
| 2024 |
+32°C
|
+28°C
|
+30°C | 8 h | 6 | 77% | 5 — 7 m/s |
| 2023 |
+32°C
|
+28°C
|
+30°C | 9 h | 6 | 67% | 3 — 6 m/s |
| 2022 |
+33°C
|
+29°C
|
+31°C | 13 h | 7 | 65% | 4 — 4 m/s |
| 2021 |
+31°C
|
+28°C
|
+29°C | 9 h | 6 | 65% | 4 — 5 m/s |
| 2020 |
+33°C
|
+28°C
|
+30°C | 13 h | 7 | 72% | 4 — 5 m/s |
| 2019 |
+31°C
|
+27°C
|
+29°C | 11 h | 6 | 76% | 4 — 5 m/s |