Weather in Ha Long on 20 August 2026
Preliminary outlook for 20 August 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +30°C and nighttime around +25°C, average precipitation 2 mm, wind around 2 m/s, humidity around 86%.
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.
+27°C
Weather archive — latest year: 2025
Light rain shower
Weather archive — latest year: 2025
Nighttime: +25°C
Precipitation: 2.1 mm
Wind: 2 — 3 m/s
Humidity: 90%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 154° ↓ (S) |
Sunrise
05:33
Duration
12 h 46 min
Sunset
18:19
Moonrise
02:16
Moonset
16:18
Moon phase
Waning Crescent
Illumination
15%
+28°C
Weather archive — for 2024 year
Moderate or heavy rain shower
Weather archive — for 2024 year
Nighttime: +26°C
Precipitation: 3.6 mm
Wind: 1 — 1 m/s
Humidity: 87%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 8 h |
| UV index | 7 | Cloud cover (avg.) | 48% |
| 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.) | +26°C |
| Heat index (avg.) | +34°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 120° ↘ (SSE) |
Sunrise
05:33
Duration
12 h 45 min
Sunset
18:18
Moonrise
18:56
Moonset
05:46
Moon phase
Full Moon
Illumination
100%
+28°C
Weather archive — for 2023 year
Heavy rain at times
Weather archive — for 2023 year
Nighttime: +26°C
Precipitation: 1.2 mm
Wind: 2 — 3 m/s
Humidity: 81%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 4 h |
| UV index | 6 | Cloud cover (avg.) | 83% |
| 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.) | +25°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 106° ↘ (SSE) |
Sunrise
05:33
Duration
12 h 46 min
Sunset
18:19
Moonrise
08:30
Moonset
20:40
Moon phase
Waxing Crescent
Illumination
23%
+28°C
Weather archive — for 2022 year
Moderate or heavy rain shower
Weather archive — for 2022 year
Nighttime: +25°C
Precipitation: 5.5 mm
Wind: 2 — 2 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 10 h |
| UV index | 7 | Cloud cover (avg.) | 68% |
| Pressure (avg.) | 752 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 6 m/s | Wind direction (avg.) | 91° ↘ (SSE) |
Sunrise
05:33
Duration
12 h 46 min
Sunset
18:19
Moonrise
No moonrise
Moonset
13:05
Moon phase
Last Quarter
Illumination
39%
+28°C
Weather archive — for 2021 year
Cloudy
Weather archive — for 2021 year
Nighttime: +26°C
Precipitation: 0.5 mm
Wind: 2 — 3 m/s
Humidity: 88%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 11 h |
| UV index | 7 | Cloud cover (avg.) | 69% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +33°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +33°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 139° ↘ (SSE) |
Sunrise
05:33
Duration
12 h 46 min
Sunset
18:19
Moonrise
16:52
Moonset
02:56
Moon phase
Waxing Gibbous
Illumination
83%
+26°C
Weather archive — for 2020 year
Patchy rain nearby
Weather archive — for 2020 year
Nighttime: +24°C
Precipitation: 0.6 mm
Wind: 2 — 3 m/s
Humidity: 89%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 13 h |
| UV index | 6 | Cloud cover (avg.) | 69% |
| Pressure (avg.) | 755 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +29°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 5 m/s | Wind direction (avg.) | 123° → (ESE) |
Sunrise
05:33
Duration
12 h 45 min
Sunset
18:18
Moonrise
06:28
Moonset
19:31
Moon phase
Waxing Crescent
Illumination
6%
+28°C
Weather archive — for 2019 year
Patchy rain nearby
Weather archive — for 2019 year
Nighttime: +26°C
Precipitation: 0.5 mm
Wind: 2 — 3 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +31°C | Sun hours | 2 h |
| UV index | 7 | Cloud cover (avg.) | 63% |
| Pressure (avg.) | 752 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +32°C | Dew point (avg.) | +25°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 59° → (E) |
Sunrise
05:33
Duration
12 h 46 min
Sunset
18:19
Moonrise
21:24
Moonset
09:12
Moon phase
Waning Gibbous
Illumination
64%
Weather in Ha Long on 20 August in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+25°C
|
+27°C | 8 h | 6 | 90% | 2 — 3 m/s |
| 2024 |
+32°C
|
+26°C
|
+28°C | 8 h | 7 | 87% | 1 — 1 m/s |
| 2023 |
+31°C
|
+26°C
|
+28°C | 4 h | 6 | 81% | 2 — 3 m/s |
| 2022 |
+31°C
|
+25°C
|
+28°C | 10 h | 7 | 85% | 2 — 2 m/s |
| 2021 |
+31°C
|
+26°C
|
+28°C | 11 h | 7 | 88% | 2 — 3 m/s |
| 2020 |
+28°C
|
+24°C
|
+26°C | 13 h | 6 | 89% | 2 — 3 m/s |
| 2019 |
+31°C
|
+26°C
|
+28°C | 2 h | 7 | 80% | 2 — 3 m/s |