Hanoi Weather in August
Vietnam · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Hanoi sees average temperatures ranging from a low of 25.9°C (78.6°F) to a high of 32.0°C (89.6°F), with a mean of 28.6°C (83.5°F). Compared to the annual average of 24.3°C (75.7°F), this month is 4.3°C warmer than the yearly norm. Precipitation averages 386.1mm, making it approximately 205.0mm wetter than the monthly average of 181.0mm. The city receives an average of 8.3 hours of sunshine per day during August, with relative humidity averaging 85.5%. Wind speeds reach an average maximum of 13.5 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.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 29.6°C (85.3°F) | 28.6°C (83.5°F) | 27.4°C (81.3°F) |
| Rainfall | 280.4mm | 386.1mm | 434.3mm |
| Sunshine | 9.7 hrs | 8.3 hrs | 7.4 hrs |
| Humidity | 80.5% | 85.5% | 85.9% |
| Wind | 15.2 km/h | 13.5 km/h | 14.2 km/h |
| Rainy Days | 25.0 | 27.6 | 25.6 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Hanoi in August, 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 August?
The average temperature in Hanoi during August ranges from 25.9°C (78.6°F) to 32.0°C (89.6°F), with a mean of 28.6°C (83.5°F).
How much does it rain in Hanoi in August?
Hanoi receives an average of 386.1mm of precipitation in August, spread across approximately 27.6 rainy days.
What should I pack for Hanoi in August?
Based on August weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 386.1mm of precipitation.
Is August a good time to visit Hanoi?
August is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Hanoi
Cities with Similar August 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.