Weather in Chennai on 20 December 2026
Preliminary outlook for 20 December 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +27°C and nighttime around +24°C, average precipitation 1.8 mm, wind around 5 m/s, humidity around 73%.
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.
+24°C
Weather archive — latest year: 2025
Clear/Sunny
Weather archive — latest year: 2025
Nighttime: +22°C
Precipitation: 0 mm
Wind: 3 — 4 m/s
Humidity: 67%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +26°C | Sun hours | 10 h |
| UV index | 6 | Cloud cover (avg.) | 6% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +25°C | Dew point (avg.) | +17°C |
| Heat index (avg.) | +26°C | Wind chill (avg.) | +24°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 123° ↗ (NE) |
Sunrise
06:25
Duration
11 h 22 min
Sunset
17:47
Moonrise
06:34
Moonset
18:00
Moon phase
New Moon
Illumination
0%
+26°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +24°C
Precipitation: 12.7 mm
Wind: 5 — 6 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 7 h |
| UV index | 6 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +23°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 10 m/s | Wind direction (avg.) | 341° ↖ (NNW) |
Sunrise
06:26
Duration
11 h 22 min
Sunset
17:48
Moonrise
22:29
Moonset
10:32
Moon phase
Waning Gibbous
Illumination
64%
+26°C
Weather archive — for 2023 year
Cloudy
Weather archive — for 2023 year
Nighttime: +25°C
Precipitation: 0 mm
Wind: 6 — 6 m/s
Humidity: 68%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 10 h |
| UV index | 7 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +19°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 38° ↗ (NE) |
Sunrise
06:25
Duration
11 h 22 min
Sunset
17:47
Moonrise
12:34
Moonset
00:08
Moon phase
First Quarter
Illumination
51%
+25°C
Weather archive — for 2022 year
Overcast
Weather archive — for 2022 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 5 — 7 m/s
Humidity: 79%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 1 h |
| UV index | 5 | Cloud cover (avg.) | 90% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +21°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +25°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 143° ↓ (S) |
Sunrise
06:25
Duration
11 h 22 min
Sunset
17:47
Moonrise
03:01
Moonset
14:54
Moon phase
Waning Crescent
Illumination
11%
+26°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +24°C
Precipitation: 0.1 mm
Wind: 4 — 5 m/s
Humidity: 65%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 9 h |
| UV index | 6 | Cloud cover (avg.) | 51% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +27°C | Dew point (avg.) | +18°C |
| Heat index (avg.) | +27°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 22° ↑ (NNE) |
Sunrise
06:25
Duration
11 h 22 min
Sunset
17:47
Moonrise
18:47
Moonset
07:15
Moon phase
Waxing Gibbous
Illumination
89%
+25°C
Weather archive — for 2020 year
Clear/Sunny
Weather archive — for 2020 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 6 — 7 m/s
Humidity: 73%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 11 h |
| UV index | 6 | Cloud cover (avg.) | 37% |
| Pressure (avg.) | 761 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +20°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 11 m/s | Wind direction (avg.) | 47° ↗ (NE) |
Sunrise
06:26
Duration
11 h 22 min
Sunset
17:48
Moonrise
11:15
Moonset
23:13
Moon phase
Waxing Crescent
Illumination
34%
+26°C
Weather archive — for 2019 year
Partly Cloudy
Weather archive — for 2019 year
Nighttime: +24°C
Precipitation: 0 mm
Wind: 4 — 5 m/s
Humidity: 77%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +27°C | Sun hours | 11 h |
| UV index | 7 | Cloud cover (avg.) | 32% |
| Pressure (avg.) | 760 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +28°C | Dew point (avg.) | +21°C |
| Heat index (avg.) | +28°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 9 m/s | Wind direction (avg.) | 64° ↗ (ENE) |
Sunrise
06:25
Duration
11 h 22 min
Sunset
17:47
Moonrise
00:42
Moonset
13:09
Moon phase
Last Quarter
Illumination
36%
Weather in Chennai on 20 December in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+26°C
|
+22°C
|
+24°C | 10 h | 6 | 67% | 3 — 4 m/s |
| 2024 |
+28°C
|
+24°C
|
+26°C | 7 h | 6 | 85% | 5 — 6 m/s |
| 2023 |
+27°C
|
+25°C
|
+26°C | 10 h | 7 | 68% | 6 — 6 m/s |
| 2022 |
+27°C
|
+24°C
|
+25°C | 1 h | 5 | 79% | 5 — 7 m/s |
| 2021 |
+29°C
|
+24°C
|
+26°C | 9 h | 6 | 65% | 4 — 5 m/s |
| 2020 |
+27°C
|
+24°C
|
+25°C | 11 h | 6 | 73% | 6 — 7 m/s |
| 2019 |
+27°C
|
+24°C
|
+26°C | 11 h | 7 | 77% | 4 — 5 m/s |