Hanoi Weather in December
Vietnam · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Hanoi sees average temperatures ranging from a low of 14.2°C (57.6°F) to a high of 21.5°C (70.7°F), with a mean of 17.6°C (63.7°F). Compared to the annual average of 24.3°C (75.7°F), this month is 6.7°C cooler than the yearly norm. Precipitation averages 15.0mm, making it approximately 166.0mm drier than the monthly average of 181.0mm. This is the driest month of the year, with just 15.0mm of precipitation. The city receives an average of 5.6 hours of sunshine per day during December, with relative humidity averaging 68.5%. Wind speeds reach an average maximum of 14.4 km/h. For travelers, this month offers a temperature experience in Hanoi, with drier-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.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 22.8°C (73.0°F) | 17.6°C (63.7°F) | 17.4°C (63.3°F) |
| Rainfall | 50.3mm | 15.0mm | 58.3mm |
| Sunshine | 7.9 hrs | 5.6 hrs | 4.5 hrs |
| Humidity | 75.5% | 68.5% | 75.3% |
| Wind | 14.1 km/h | 14.4 km/h | 15.5 km/h |
| Rainy Days | 10.8 | 9.4 | 17.6 |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Hanoi in December, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Hanoi in December?
The average temperature in Hanoi during December ranges from 14.2°C (57.6°F) to 21.5°C (70.7°F), with a mean of 17.6°C (63.7°F).
How much does it rain in Hanoi in December?
Hanoi receives an average of 15.0mm of precipitation in December, spread across approximately 9.4 rainy days. This is the driest month of the year.
What should I pack for Hanoi in December?
Based on December weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is December a good time to visit Hanoi?
December is a good time to visit Hanoi, with comfortable temperatures and manageable rainfall.
Other Months for Hanoi
Cities with Similar December 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.