Vietnam Hanoi Weather in October — Climate Guide
October in Hanoi is very-high
October is very-high for Hanoi.
October is HANOI'S MOST-ICONIC MONTH — autumn at its peak with 18-29°C / 64-84°F (perfect), humidity dropping to 80% (manageable), sunshine 5 hours daily, and the famous Hanoi autumn 'light' (golden hour quality of light that defines Hanoi autumn photography). Halong Bay cruise reliability 95%+. Old Quarter walking weather perfect.
This is also Korean tourist peak season — multiple Korean carriers add flights, Sofitel Metropole + Capella + La Siesta Premium book out 4-6 weeks ahead, Halong Bay overnight cruises require 2-3 weeks pre-booking. The Vietnamese Capital Liberation Day (October 10, 1954 — Hanoi liberated from French occupation) brings atmospheric military parades at Ba Dinh Square + Hoan Kiem Lake celebrations.
Travel score
AUTUMN PEAK — Hanoi's most-iconic month
October Weather at a Glance
October averages 84°F / 29°C highs and 72°F / 22°C lows with 9 rainy days and 100mm rainfall — dramatic improvement from September. Humidity drops to 80%. UV 7. Sunshine 5 hours. The famous Hanoi autumn 'light' quality. Sunrise 6:00 AM, sunset 5:35 PM.
October Travel Advice
Book hotels 4-6 weeks ahead — Korean tourist peak + autumn perfection drives surge. Halong Bay overnight cruise 2-3 weeks pre-booking. Capital Liberation Day (Oct 10) celebrations atmospheric. Sofitel Metropole + Capella book first; La Siesta Premium fills 3 weeks ahead. Worth the surge for first-time visitors.
Flying In from Overseas
Korean autumn travel peak — multiple Korean carriers add flights. Vietnamese diaspora returning. Japanese autumn shoulder. European pre-Christmas escape begins. Direct flights from Seoul $450-700 (peak), Tokyo $400-600, Singapore $250-450, Hong Kong $200-400, Bangkok $100-200.
October Pricing Trends
PEAK pricing: Old Quarter 3-star $80-150/night, Sofitel Metropole $500-750, Capella $500-750. Halong Bay overnight cruise $180-380. Flights from Seoul $450-700.
Hanoi October Weather Stats
Avg High
29°C
Avg Low
22°C
Rainy Days
9
100mm total
Sunshine
5h
Daily avg
Humidity
80%
moderate
UV Index
7
High
Wind
10 km/h
Gusts 25
Sea Temp
0°C
no swimming
Crowds
Very busy
At attractions
October Sunrise & Sunset
Air Quality
PM2.5
40 μg/m³
PM10
60 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
30°C
Nighttime
22°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 25 km/h
Activities Recommended for October
October Travel Pros & Cons
Pros
- AUTUMN PEAK — perfect 18-29°C
- Hanoi's iconic autumn light
- Reduced humidity (80%)
- Halong Bay 95%+ reliability
- Capital Liberation Day atmospheric
Cons
- Peak pricing (+30-50%)
- Hotels book 4-6 weeks ahead
- Halong Bay cruise must pre-book 2-3 weeks
- Korean tourist crowds peak
October Events & Festivals
- AUTUMN PEAK — Hanoi's most-iconic month
- Mid-Autumn Festival tail (early Oct)
- Vietnamese Capital Liberation Day (October 10)
- Korean autumn travel peak
Hanoi in October — Full Picture
October is HANOI'S MOST-ICONIC MONTH — autumn at its peak with 18-29°C / 64-84°F (perfect), humidity dropping to 80% (manageable), sunshine 5 hours daily, and the famous Hanoi autumn 'light' (golden hour quality of light that defines Hanoi autumn photography). Halong Bay cruise reliability 95%+. Old Quarter walking weather perfect.
This is also Korean tourist peak season — multiple Korean carriers add flights, Sofitel Metropole + Capella + La Siesta Premium book out 4-6 weeks ahead, Halong Bay overnight cruises require 2-3 weeks pre-booking. The Vietnamese Capital Liberation Day (October 10, 1954 — Hanoi liberated from French occupation) brings atmospheric military parades at Ba Dinh Square + Hoan Kiem Lake celebrations.
The trade-off: peak pricing (Sofitel Metropole $500-700, Old Quarter 3-stars $80-150) and peak crowds at iconic sites. But the weather genuinely is Hanoi's best — worth the surge for first-time visitors.
What to Wear & What to Pack
Hanoi's most-pleasant month — light layers + light jacket evening. T-shirt + light pants typical. Long pants at Mausoleum.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
27.7°C
21°C
13/mo
Summer (Jun·Jul·Aug)
32.7°C
26°C
15.7/mo
Autumn (Sep·Oct·Nov)
Current28.3°C
21.7°C
9.7/mo
Winter (Dec·Jan·Feb)
20°C
14.7°C
7.3/mo
Hanoi Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 19° | 14° | 7d·25mm | 3h | 80% | 4 | Moderate | Shoulder | |
| 20° | 15° | 9d·30mm | 2h | 82% | 4 | Moderate | Peak | |
| 23° | 18° | 13d·45mm | 2h | 85% | 5 | Moderate | Shoulder | |
| 28° | 21° | 11d·90mm | 4h | 84% | 7 | Busy | Shoulder | |
| 32° | 24° | 15d·190mm | 6h | 84% | 10 | Moderate | Shoulder | |
| 33° | 26° | 14d·240mm | 6h | 83% | 10 | Moderate | Low season | |
| 33° | 26° | 16d·270mm | 6h | 84% | 10 | Busy | Shoulder | |
| 32° | 26° | 17d·320mm | 6h | 85% | 9 | Busy | Shoulder | |
| 31° | 24° | 14d·250mm | 6h | 84% | 9 | Moderate | Shoulder | |
| October (Best) | 29° | 22° | 9d·100mm | 5h | 80% | 7 | Very busy | Peak |
| November (Best) | 25° | 19° | 6d·50mm | 5h | 75% | 6 | Very busy | Peak |
| December (Best) | 21° | 15° | 6d·25mm | 4h | 75% | 5 | Very busy | Peak |
View Other Months
Hanoi October Hotel Picks
Frequently Asked Questions
Is October a good time to visit Hanoi?
Hanoi in October is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Hanoi in October?
Hanoi October averages a high of 29°C and a low of 22°C.
Does it rain much in Hanoi in October?
Hanoi October averages 100mm of rainfall over about 9 rainy days.
What should I wear in Hanoi in October?
Hanoi's most-pleasant month — light layers + light jacket evening. T-shirt + light pants typical. Long pants at Mausoleum.
What time are sunrise and sunset in Hanoi in October?
Hanoi October sunrise is 06:00 and sunset is 17:35, with 11h 35min of daylight.
What's the air quality like in Hanoi in October?
Hanoi October air quality (AQI) averages 90, rated Moderate. PM2.5 averages 40μg/m³.
What activities are recommended in Hanoi in October?
In October, Hanoi is great for Old Quarter walking + autumn light photography, Halong Bay overnight cruise (peak quality), Ninh Binh day trip.
Is October peak season in Hanoi?
Hanoi October crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Hanoi
View Other Months
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.