Halong Bay’s climate is humid and tropical. With a hot, humid summer and dry, cold winter; its temperature varies from 15ºC to 25ºC. Ha Long bay has typical diurnal tide system (tide amplitude ranges from 3.5-4m). The salinity is from 31 to 34.5MT in dry season and lower in rainy season.
The best time to travel to Halong Bay
It is possible to visit Ha Long Bay year-round, with the best time to visit from October through April, although during the winter months of December, January and February, the weather in Halong Bay can be cool and overcast with low visibility. During the summer months from May to September, temperatures rise and storms are more likely during the rainy season.Book your trip with silverseahalongcruise.com and you’ll get the best advices.
Halong Bay weather in 12 months:
March April + May: Temperature: ~ 20°C-22°C; Some days have light rain; Clear with blue sky.
June + July + Aug: Temperature: ~ 26°C-28°C with strong Sun; Carefully with Typhoon; Some days have trong but quick rain.
Sept + Oct + Nov: Best time to enjoy Halong with cool temperature: ~ 26°C-28°C.
Dec + Jan + Feb: Temperature: 18°C~20°C; Cold with strong wind; Some days are misty and rainy.
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In addition, To enjoy the most beautiful sightseeings in Vietnam by your eyes, you can see some itineraries below Halong Bay Cruises – Hanoi Tour – Vietnam Tours – Sapa Tours – Package Tours or book a private car to discover where ever you want to enjoy the Vietnamese taste.