Vietnam Ha Long Bay Weather in October (peak autumn · second-best month) — Climate Guide
October (peak autumn · second-best month) in Ha Long Bay is Perfect
Ha Long Bay Weather in October (peak autumn · second-best month) — Quick Answer
As of 2026- Avg temp
- 27° / 22°
- Rainfall
- 100mm · 8 days
- Crowds
- Very busy
As of 2026, Ha Long Bay in October (peak autumn · second-best month) averages a high of 27°C and low of 22°C with 100mm of rain over about 8 days. T-shirts + light layers. Long pants for evenings. Light rain shell occasional.
October (peak autumn · second-best month) is Perfect for Ha Long Bay.
Second-best month after April — 22/27°C, clear skies, low rainfall, perfect for cruise photography. Hotels return to peak rates. Book cruises 2-3 months ahead. The canonical October Ha Long Bay experience: misty mornings clearing into bright afternoons.
Travel score
Ha Long Bay October (peak autumn · second-best month) Weather Stats
Avg High
27°C
Avg Low
22°C
Rainy Days
8
100mm total
Sunshine
6h
Daily avg
Humidity
76%
Mild + pleasant
UV Index
7
High
Wind
8 km/h
Gusts 15
Sea Temp
26°C
Warm swimmable
Crowds
Very busy
At attractions
October (peak autumn · second-best month) Sunrise & Sunset
Air Quality
PM2.5
30 μg/m³
PM10
52 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
28°C
Nighttime
22°C
Humidity and wind affect how the actual temperature feels.
Wind
8 km/h
Max gust 15 km/h
Activities Recommended for October (peak autumn · second-best month)
October (peak autumn · second-best month) Travel Pros & Cons
Pros
- Ideal 22/27°C
- Clear skies for photos
- Swimmable water
- Long autumn light
Cons
- Hotel + cruise prices peak
- International crowds peak
- Need to book 2-3 months ahead
October (peak autumn · second-best month) Events & Festivals
- Peak autumn international tourism
Ha Long Bay in October (peak autumn · second-best month) — Full Picture
Second-best month after April — 22/27°C, clear skies, low rainfall, perfect for cruise photography. Hotels return to peak rates. Book cruises 2-3 months ahead. The canonical October Ha Long Bay experience: misty mornings clearing into bright afternoons.
What to Wear & What to Pack
T-shirts + light layers. Long pants for evenings. Light rain shell occasional.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
26°C
19.7°C
12.3/mo
Summer (Jun·Jul·Aug)
31.7°C
26°C
16.7/mo
Autumn (Sep·Oct·Nov)
Current27°C
21.7°C
9.3/mo
Winter (Dec·Jan·Feb)
20°C
14°C
8/mo
Ha Long Bay Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 19° | 13° | 8d·25mm | 4h | 78% | 4 | Moderate | Shoulder | |
| 20° | 14° | 10d·30mm | 3h | 80% | 4 | Moderate | Shoulder | |
| 22° | 16° | 11d·35mm | 4h | 82% | 5 | Busy | Peak | |
| 26° | 20° | 12d·60mm | 5h | 84% | 7 | Very busy | Peak | |
| 30° | 23° | 14d·175mm | 6h | 84% | 9 | Moderate | Shoulder | |
| 32° | 26° | 15d·250mm | 6h | 84% | 10 | Quiet | Low season | |
| 32° | 26° | 17d·290mm | 6h | 84% | 10 | Quiet | Low season | |
| 31° | 26° | 18d·320mm | 5h | 85% | 9 | Quiet | Low season | |
| 30° | 24° | 14d·240mm | 6h | 82% | 8 | Quiet | Low season | |
| 27° | 22° | 8d·100mm | 6h | 76% | 7 | Very busy | Peak | |
| 24° | 19° | 6d·50mm | 6h | 75% | 5 | Busy | Peak | |
| 21° | 15° | 6d·25mm | 5h | 77% | 4 | Moderate | Peak |
View Other Months
Ha Long Bay October (peak autumn · second-best month) Hotel Picks
Frequently Asked Questions
Is October (peak autumn · second-best month) a good time to visit Ha Long Bay?
Ha Long Bay in October (peak autumn · second-best month) is Perfect. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Ha Long Bay in October (peak autumn · second-best month)?
Ha Long Bay October (peak autumn · second-best month) averages a high of 27°C and a low of 22°C.
Does it rain much in Ha Long Bay in October (peak autumn · second-best month)?
Ha Long Bay October (peak autumn · second-best month) averages 100mm of rainfall over about 8 rainy days.
What should I wear in Ha Long Bay in October (peak autumn · second-best month)?
T-shirts + light layers. Long pants for evenings. Light rain shell occasional.
What time are sunrise and sunset in Ha Long Bay in October (peak autumn · second-best month)?
Ha Long Bay October (peak autumn · second-best month) sunrise is 06:00 and sunset is 17:25, with 11h 25min of daylight.
What's the air quality like in Ha Long Bay in October (peak autumn · second-best month)?
Ha Long Bay October (peak autumn · second-best month) air quality (AQI) averages 68, rated Moderate. PM2.5 averages 30μg/m³.
What activities are recommended in Ha Long Bay in October (peak autumn · second-best month)?
In October (peak autumn · second-best month), Ha Long Bay is great for Cruise full circuit, Ti Top swim, Cat Ba hiking.
Is October (peak autumn · second-best month) peak season in Ha Long Bay?
Ha Long Bay October (peak autumn · second-best month) crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Ha Long Bay
View Other Months
Planning a October (peak autumn · second-best month) trip to Ha Long Bay?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.