Which is the hottest month in Ha Long Bay?

The hottest time of year in Ha Long Bay is normally July. Expect maximum daytime temperatures to reach 32°C with very high heat and humidity.

Which month has the most rain in Ha Long Bay?

In terms of rainfall, August is usually the wettest month in Ha Long Bay with 312mm on average. There are normally 16 days in August with some rain.

When is it sunniest in Ha Long Bay?

The sunniest time of year in Ha Long Bay is normally September with bright sunshine on average for 51% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Ha Long Bay?

The sea is usually at its warmest in Ha Long Bay in August when the water temperature reaches 30°C.

Best time to visit Ha Long Bay

Q: When is the best time to visit Ha Long Bay?

The best time to visit Ha Long Bay is October and November based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Find the best time to visit Ha Long Bay and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Ha Long Bay by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Vietnam

Hostelworld: Top deals on accommodation

Sale

Explore cheap accommodation around the world
Choose from over 36,000 properties across the globe
Get instant confirmation & 24/7 customer service

Go to Hostelworld deal >>

View all Hostelworld offers

When is the best time to visit Ha Long Bay?

The best time to visit Ha Long Bay is October and November based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

2
Jan
2
Feb
2.5
Mar
3
Apr
2.5
May
2
Jun
2.5
Jul
2
Aug
2.5
Sep
3.5
Oct
3.5
Nov
3
Dec

Change criteria

Max Day Temperature (°F)

68
Jan
68
Feb
73
Mar
81
Apr
88
May
90
Jun
90
Jul
90
Aug
88
Sep
84
Oct
77
Nov
72
Dec

Hours of Sunshine (daily)

3
Jan
2
Feb
3
Mar
4
Apr
6
May
6
Jun
7
Jul
6
Aug
6
Sep
6
Oct
5
Nov
5
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Vietnam (Ha Long Bay) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)