Hanoi Weather in October
Vietnam · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
October in Hanoi sees average temperatures ranging from a low of 21.6°C (70.9°F) to a high of 28.1°C (82.6°F), with a mean of 24.5°C (76.1°F). Compared to the annual average of 24.3°C (75.7°F), this month is 0.2°C warmer than the yearly norm. Precipitation averages 215.9mm, making it approximately 35.0mm wetter than the monthly average of 181.0mm. The city receives an average of 7.5 hours of sunshine per day during October, with relative humidity averaging 76.2%. Wind speeds reach an average maximum of 15.8 km/h. For travelers, this month offers a temperature experience in Hanoi, with wetter-than-average conditions compared to the rest of the year.
Hanoi taught me that 'winter' in Southeast Asia is relative — but still real. I arrived in January in a t-shirt and shivered through 14°C with 85% humidity. That damp cold cuts through layers in a way the thermometer doesn't capture. Pack a fleece and light jacket November-February. The nightmare window is June-August: 33°C, 80% humidity, and downpours that flood the Old Quarter streets. May and October are the smart traveler's picks: 27°C, lower humidity, manageable rain. Always carry a compact umbrella year-round — Hanoi averages 1600mm and the rain comes fast.
October vs Adjacent Months
| Metric | September | October | November |
|---|---|---|---|
| Mean Temp | 27.4°C (81.3°F) | 24.5°C (76.1°F) | 22.8°C (73.0°F) |
| Rainfall | 434.3mm | 215.9mm | 50.3mm |
| Sunshine | 7.4 hrs | 7.5 hrs | 7.9 hrs |
| Humidity | 85.9% | 76.2% | 75.5% |
| Wind | 14.2 km/h | 15.8 km/h | 14.1 km/h |
| Rainy Days | 25.6 | 16.0 | 10.8 |
Seasonal Context
October falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Hanoi in October, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Hanoi in October?
The average temperature in Hanoi during October ranges from 21.6°C (70.9°F) to 28.1°C (82.6°F), with a mean of 24.5°C (76.1°F).
How much does it rain in Hanoi in October?
Hanoi receives an average of 215.9mm of precipitation in October, spread across approximately 16.0 rainy days.
What should I pack for Hanoi in October?
Based on October weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 215.9mm of precipitation.
Is October a good time to visit Hanoi?
October is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Hanoi
Cities with Similar October Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 21.03°, 105.85°. Timezone: Asia/Ho_Chi_Minh. Last updated: 2026-07-30.