- Rain mm/yr
- 1,760
Updated July 2026 · Sources cited: climatestotravel.com, en.climate-data.org
Good to know
Good to Know
- October-November and March-April offer the most comfortable weather for tourists, with mild temperatures and lower humidity.
- June-August is officially off-season despite being monsoon months—expect lower hotel and flight prices but challenging weather with frequent street flooding.
- Winter (December-February) is genuinely dry but gray and overcast; expect 10-16°C (50-61°F) mornings and thick fog, not tropical warmth. Bring layers and waterproof jackets year-round.
- The damp cold of December-February feels colder than the thermometer suggests due to high humidity; this differs markedly from dry cold climates.
- Tet (Lunar New Year, typically late January/early February) brings domestic travel surges and many business closures; book well ahead or expect higher prices.
- Outdoor activities are genuinely difficult May-September due to heat and unpredictable afternoon downpours—plan indoor activities (cooking classes, museums, cafés) for midday.
- No month is 'bad'—even summer visitors with flexible indoor plans can have rewarding trips, especially if visiting early morning or evening.
Seasons
Overview
Autumn (September-November)
- Character
- Monsoon rains retreat, blue skies return, temperatures comfortable for outdoor activities. Humidity drops to around 75%. Milk flowers bloom along city boulevards. Peak tourist season.
- Rainfall Mm
- 200
Temperature Range Celsius
- Low
- 19
- High
- 28
Temperature Range Fahrenheit
- Low
- 66
- High
- 82
Spring (March-April)
- Character
- Gradually warming, moderate rainfall, city comes alive with blooming flowers. Peak travel season with higher accommodation costs. Persistent damp humidity (nồm) especially in March.
- Rainfall Mm
- 110
Temperature Range Celsius
- Low
- 16
- High
- 28
Temperature Range Fahrenheit
- Low
- 61
- High
- 82
Summer (May-September)
- Character
- Hot, humid, rainy monsoon season. Heavy afternoon thunderstorms common. June–August particularly challenging with temperatures regularly exceeding 32°C (90°F) and humidity near 80%. Street flooding occurs during heavy downpours.
- Rainfall Mm
- 310
Temperature Range Celsius
- Low
- 25
- High
- 35
Temperature Range Fahrenheit
- Low
- 77
- High
- 95
Winter (December-February)
- Character
- Cool and dry with low temperatures. Overcast, damp conditions with occasional drizzle. Mornings feature fog over lakes. December least sunny (about 3 hours daily). Lower hotel rates except during Tet (Lunar New Year, late January/early February).
- Rainfall Mm
- 25
Temperature Range Celsius
- Low
- 11
- High
- 22
Temperature Range Fahrenheit
- Low
- 52
- High
- 72
Best Months
- October
- November
- March
- April
Worst Months
- June
- July
- August
Rainfall
- Peak Month
- August (310-338 mm)
- Driest Month
- December (14-37 mm)
- Rainy Season
- May-October, peaking July-August
- Annual Total Mm
- 1760
- Monsoon Note
- Southwest monsoon brings heavy precipitation June-September. Rainfall often comes in intense afternoon thunderstorms rather than all-day rain.
Snowfall
- Occurs In Hanoi
- No
- Note
- Hanoi city center does not experience snow. Occasional snowfall documented in nearby Ba Vì mountains (40 km west) during rare extreme cold snaps. Mountain areas like Sapa to the north see occasional snow in January.
Temperature Extremes
- Coldest Months
- January (average 14-16°C (61°F) / 57-61°F, can dip below 10°C (50°F))
- Hottest Months
- June-July (peak temperatures 34-35°C (95°F) / 93-95°F)
- Annual Low Celsius
- 10
- Annual High Celsius
- 39
- Annual Low Fahrenheit
- 50
- Annual High Fahrenheit
- 102
Humidity And Other Factors
- Humidity Range Percent
- 75-85
- Typhoons
- Hanoi sits 90 km inland, so direct hits are rare, but typhoon remnants bring 2-3 days heavy rain and wind mainly July-October (September highest risk)
- Sunniest Month
- July (196 hours/month)
- Cloudiest Month
- February (45 hours/month)
- Sunshine Hours Annually
- 1554
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Hanoi
Data last updated July 2026 · Verify anything important.