Ha Long Bay weather in August 2025

Expect 32°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Ha Long Bay in August. Check more long-term weather averages for Ha Long Bay in August before you book your next holiday to Vietnam in 2025/2026.

  • 32°C maximum daytime temperature in August in Ha Long Bay32
    32°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in August in Ha Long Bay16
    16 days with some rainfall
  • 25°C minimum night-time temperature in August in Ha Long Bay25
    25°C min night temperature
  • 13 hours of daylight per day in August in Ha Long Bay13
    13 hours of daylight per day
  • Very high heat & humidity in August in Ha Long BayVH
    Very High heat & humidity
  • 312 mm monthly rainfall in August in Ha Long Bay312
    312 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Ha Long Bay11
    11+ (Extreme) UV index
  • 30°C sea temperature in August in Ha Long Bay30
    30°C sea temperature

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The August weather guide for Vietnam (Ha Long Bay) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Ha Long Bay in August?

Daytime temperatures usually reach 32°C in Ha Long Bay in August with very high heat and humidity, falling to 25°C at night.

How sunny is it in Ha Long Bay in August?

There are normally 6 hours of bright sunshine each day in Ha Long Bay in August - that's 46% of daylight hours.

How warm is the sea around Ha Long Bay in August?

The average sea temperature around Ha Long Bay in August is 30°C.

Does it rain in Ha Long Bay in August?

There are usually 16 days with some rain in Ha Long Bay in August and the average monthly rainfall is 312mm.

What is the chance of a typhoon in Ha Long Bay in August?

On average 2.7 days in August in Ha Long Bay are likely to be affected by the passage of one or more tropical storms.

Ha Long Bay August sunrise & sunset times

Browse the sunrise and sunset times for Ha Long Bay in August 2025. Select a month to view Ha Long Bay sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:26 18:30
Saturday, 16th August 2025 05:31 18:21
Sunday, 31st August 2025 05:35 18:09

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