Hanoi weather
Current conditions
Averages and extremes
Yesterday's Data
Overview of Hanoi weather
Hanoi experiences a humid tropical monsoon climate characterized by four distinct seasons: Spring, Summer, Autumn, and Winter. The most notable differences are observed between the hot and cold seasons. The hot season extends from May to September, featuring frequent rain showers and intense sunshine. In contrast, the cold season lasts from November to March, marked by dry, cold weather, occasionally accompanied by light drizzles in February and March. The transition months of October and April incorporate elements from both seasons. For those seeking the most delightful weather, the ideal times to visit Hanoi are from September to November and March to April.
Hanoi in Spring
- Lowest temperature: 16°C
- Highest temperature: 28°C
- Humidity: 81%
Spring, which spans from February to April, is one of the most enjoyable seasons in Hanoi. During this time, average temperatures range from 16 to 24°C. It is an ideal period for outdoor activities and sightseeing, with gentle sunshine and minimal rainfall. While light drizzles may occur sporadically, they do not detract from the beauty of the season, which is highlighted by blooming flowers and lush greenery—making it perfect for exploring the capital.
Hanoi in Summer
- Lowest temperature: 26°C
- Highest temperature: 42°C
- Humidity: 79%
Summer in Hanoi runs from May through August, with particularly high temperatures and humidity levels, especially between June and August when temperatures can soar to 42°C. Frequent thunderstorms and heavy rainfall are common but typically brief. Although summer can be challenging for outdoor activities due to heat, it offers stunning blue skies and breathtaking sunsets, making it an excellent time for photography and beach excursions to nearby destinations such as Halong or Cat Ba.
Hanoi in Autumn
- Lowest temperature: 23°C
- Highest temperature: 35°C
- Humidity: 76%
Autumn, running from September to October, is often regarded as the most romantic and picturesque season in Hanoi. The weather can range from cloudy to beautifully sunny, with mild sunshine and refreshing temperatures. The clear skies and cool breezes enhance the charm of the city, making it an inviting time to visit, with cooler temperatures expected towards the end of October.
Hanoi in Winter
- Lowest temperature: 10°C
- Highest temperature: 26°C
- Humidity: 78%
Winter in Hanoi can be particularly cold, with temperatures occasionally dropping below 10°C during the night or early morning hours. This season stretches from November to January and is characterized by wet, humid, and foggy conditions. The unique atmospheric qualities give the city a mystical charm that is worth experiencing at least once in a lifetime.
Weather averages by month
| Month | High / Low (°C) | Rain |
|---|---|---|
| January | 20° - 14° | 2 days |
| February | 21° - 16° | 2 days |
| March | 24° - 18° | 5 days |
| April | 28° - 22° | 7 days |
| May | 32° - 25° | 12 days |
| June | 33° - 26° | 14 days |
| July | 33° - 26° | 16 days |
| August | 32° - 26° | 17 days |
| September | 31° - 25° | 13 days |
| October | 29° - 22° | 8 days |
| November | 26° - 19° | 4 days |
| December | 22° - 15° | 2 days |
Frequently asked questions
1. When does it often rain in Hanoi?
In 2025, Hanoi continues to experience considerable rainfall during the summer months, particularly from June to September. August remains the wettest month, averaging 18 rainy days. Visitors should be prepared for sudden downpours during this season.
2. What is the coldest month in Hanoi?
The coldest month in Hanoi is now January. The average low temperature has remained around 14°C, while the average high has increased slightly to 21°C. Climate patterns indicate greater seasonal variation, making it essential to prepare for unpredictable weather during this time.
3. Which month is the hottest in Hanoi?
The hottest months in Hanoi are now June and July, with the average temperature reaching 34°C. During these months, temperatures can spike up to 43°C. It's essential to stay hydrated and avoid outdoor activities during peak hours.
