Ha Long climate
Vietnam
It helps to scan the year-round pattern for Ha Long before zooming into one month.
First-time visitors often notice “tiring weather” before they label it as hot or cold in Ha Long.
Climate facts
Dec · Jan · Feb
Avg low 13–16°C / high 18–21°C · Rainy days: 6–12 / 20–60 mm
Mar · Apr · Oct · Nov
Avg low 18–23°C / high 24–30°C · Rainy days: 5–12 / 40–140 mm
Mar · Apr · Oct · Nov
Avg low 18–23°C / high 24–30°C · Rainy days: 5–12 / 40–140 mm
May · Jun · Jul · Aug · Sep
Avg low 25–27°C / high 30–34°C · Rainy days: 12–22 / 170–320 mm (often peaking Jul–Aug)
How it tends to feel for travel
In hotter periods, day-versus-night fatigue accumulates differently, changing how the climate feels.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🛳️ Baseline: On the bay, deck wind can make it feel cooler than on land. The same day can feel hot inside and chilly on deck—layers help.
- • 🌞 Summer (May–Sep): Hot, humid, and showery. Quick-dry clothing, waterproof pouch, and spare tee/socks reduce the “staying damp” time.
- • 🌬️ Deck breeze: Even in hot months, deck time can feel breezy. A thin shirt/windbreaker helps adjust.
Once you lock in a couple of constraints, the decision gets much easier.
Explore Ha Long
These pages are connected so you can compare conditions and decide for yourself.