Weather in Hanoi on 18 September 2026
Preliminary outlook for 18 September 2026
A preliminary estimate based on the 2019–2025 archive: daytime around +31°C and nighttime around +25°C, average precipitation 2.1 mm, wind around 3 m/s, humidity around 82%.
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.
+26°C
Weather archive — latest year: 2025
Light rain shower
Weather archive — latest year: 2025
Nighttime: +25°C
Precipitation: 5 mm
Wind: 2 — 2 m/s
Humidity: 86%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 8 h |
| UV index | 6 | Cloud cover (avg.) | 66% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 9 km | Sea temperature | — |
| Feels like (avg.) | +30°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 129° ↓ (SSW) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
02:18
Moonset
15:51
Moon phase
Waning Crescent
Illumination
12%
+26°C
Weather archive — for 2024 year
Patchy rain nearby
Weather archive — for 2024 year
Nighttime: +25°C
Precipitation: 0.8 mm
Wind: 3 — 4 m/s
Humidity: 92%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +28°C | Sun hours | 6 h |
| UV index | 6 | Cloud cover (avg.) | 71% |
| Pressure (avg.) | 754 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 10 km | Sea temperature | — |
| Feels like (avg.) | +30°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +30°C | Wind chill (avg.) | +26°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 302° ← (WNW) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
18:10
Moonset
05:38
Moon phase
Full Moon
Illumination
100%
+28°C
Weather archive — for 2023 year
Patchy rain nearby
Weather archive — for 2023 year
Nighttime: +25°C
Precipitation: 0.9 mm
Wind: 2 — 4 m/s
Humidity: 85%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 4 h |
| UV index | 6 | Cloud cover (avg.) | 82% |
| Pressure (avg.) | 757 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 6 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.) | 6 m/s | Wind direction (avg.) | 122° ↘ (SE) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
08:11
Moonset
19:52
Moon phase
Waxing Crescent
Illumination
20%
+28°C
Weather archive — for 2022 year
Partly Cloudy
Weather archive — for 2022 year
Nighttime: +23°C
Precipitation: 0 mm
Wind: 2 — 2 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +34°C | Sun hours | 11 h |
| UV index | 7 | Cloud cover (avg.) | 29% |
| 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.) | +24°C |
| Heat index (avg.) | +32°C | Wind chill (avg.) | +28°C |
| Wind gusts (max.) | 4 m/s | Wind direction (avg.) | 283° ↖ (NW) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
23:40
Moonset
12:47
Moon phase
Last Quarter
Illumination
37%
+28°C
Weather archive — for 2021 year
Patchy rain nearby
Weather archive — for 2021 year
Nighttime: +25°C
Precipitation: 0.3 mm
Wind: 3 — 5 m/s
Humidity: 80%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +33°C | Sun hours | 4 h |
| UV index | 6 | Cloud cover (avg.) | 84% |
| Pressure (avg.) | 756 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 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.) | 151° ↓ (S) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
16:28
Moonset
02:56
Moon phase
Waxing Gibbous
Illumination
82%
+26°C
Weather archive — for 2020 year
Moderate rain at times
Weather archive — for 2020 year
Nighttime: +25°C
Precipitation: 3.7 mm
Wind: 5 — 8 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +29°C | Sun hours | 12 h |
| UV index | 6 | Cloud cover (avg.) | 65% |
| 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.) | +22°C |
| Heat index (avg.) | +29°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 12 m/s | Wind direction (avg.) | 86° ↑ (NNE) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
06:20
Moonset
18:51
Moon phase
Waxing Crescent
Illumination
2%
+28°C
Weather archive — for 2019 year
Moderate or heavy rain shower
Weather archive — for 2019 year
Nighttime: +26°C
Precipitation: 4.1 mm
Wind: 2 — 2 m/s
Humidity: 78%
| Metric | Value | Metric | Value |
|---|---|---|---|
| Day temperature (max.) | +32°C | Sun hours | 4 h |
| UV index | 7 | Cloud cover (avg.) | 57% |
| Pressure (avg.) | 759 mmHg | Snow (total for the day) | 0 cm |
| Visibility (avg.) | 8 km | Sea temperature | — |
| Feels like (avg.) | +31°C | Dew point (avg.) | +24°C |
| Heat index (avg.) | +31°C | Wind chill (avg.) | +27°C |
| Wind gusts (max.) | 7 m/s | Wind direction (avg.) | 244° ↖ (NNW) |
Sunrise
05:45
Duration
12 h 12 min
Sunset
17:57
Moonrise
20:41
Moonset
08:52
Moon phase
Waning Gibbous
Illumination
63%
Weather in Hanoi on 18 September in previous years
| Year | Day | Nighttime | Average | Sun | UV | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| 2025 |
+29°C
|
+25°C
|
+26°C | 8 h | 6 | 86% | 2 — 2 m/s |
| 2024 |
+28°C
|
+25°C
|
+26°C | 6 h | 6 | 92% | 3 — 4 m/s |
| 2023 |
+33°C
|
+25°C
|
+28°C | 4 h | 6 | 85% | 2 — 4 m/s |
| 2022 |
+34°C
|
+23°C
|
+28°C | 11 h | 7 | 78% | 2 — 2 m/s |
| 2021 |
+33°C
|
+25°C
|
+28°C | 4 h | 6 | 80% | 3 — 5 m/s |
| 2020 |
+29°C
|
+25°C
|
+26°C | 12 h | 6 | 78% | 5 — 8 m/s |
| 2019 |
+32°C
|
+26°C
|
+28°C | 4 h | 7 | 78% | 2 — 2 m/s |