Monthly climate guide
Hạ Long weather in October
With highs near 28°C (82°F) and lows around 22°C (71°F), October feels hot in Hạ Long. Rainfall averages about 168 mm (very wet) and the sky is often cloudy. Daytime highs are 2°C cooler than September and 3°C warmer than November.
What stands out in October
- It's humid — around 82% — so the heat feels heavier.
- Days and nights are close, only about 6°C apart.
- It's one of the sunniest months here, with cloud cover around 59%.
- Hạ Long is usually about 2°C warmer than Sa Pa, 370 km away, in October.
Avg high
28°C
82°F
Avg low
22°C
71°F
Rainfall
168 mm
very wet
Humidity
82%
relative
Sky
59%
cloud · often cloudy
Hạ Long weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 20°C / 67°F | 12°C / 54°F | 51 mm | 82% | 79% |
| February | 22°C / 71°F | 14°C / 57°F | 27 mm | 82% | 84% |
| March | 24°C / 76°F | 17°C / 63°F | 59 mm | 85% | 85% |
| April | 28°C / 82°F | 21°C / 69°F | 77 mm | 85% | 76% |
| May | 30°C / 86°F | 25°C / 76°F | 162 mm | 86% | 74% |
| June | 31°C / 87°F | 27°C / 80°F | 221 mm | 86% | 83% |
| July | 31°C / 87°F | 27°C / 80°F | 343 mm | 86% | 83% |
| August | 30°C / 87°F | 26°C / 79°F | 391 mm | 86% | 82% |
| September | 30°C / 86°F | 25°C / 77°F | 257 mm | 84% | 71% |
| October | 28°C / 82°F | 22°C / 71°F | 168 mm | 82% | 59% |
| November | 25°C / 77°F | 18°C / 65°F | 57 mm | 83% | 63% |
| December | 21°C / 69°F | 13°C / 55°F | 31 mm | 77% | 70% |
What to pack for October
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is October a good time to visit Hạ Long?
Compare the months in the chart above to find your ideal window.
Best time to visit Hạ Long →Other Vietnam cities in October
Cite or embed this data
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Hạ Long weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/vietnam/ha-long/october
<a href="https://weathercompare.eu/weather/vietnam/ha-long/october">Hạ Long weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/vietnam/ha-long" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Hạ Long weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/vietnam/ha-long/october">Hạ Long weather in October</a> – WeatherCompare</p>
Hạ Long in October: quick answers
Is October a good time to visit Hạ Long?
October is one of the wetter months in Hạ Long, with about 168 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Hạ Long in October?
Average highs are about 28°C (82°F) and average lows about 22°C (71°F), based on 10 years of daily data.
Does it rain a lot in Hạ Long in October?
Hạ Long typically gets around 168 mm of rain in October — very wet.
Figures are long-term averages for the area around Hạ Long (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.