Ha Noi Weather

Hanoi, the capital of Vietnam, is situated in the northern part of the country. Despite its tropical monsoon climate, its relatively higher latitude subjects it to continental climatic influences, resulting in four distinct seasons. Summer from June to August marks its hottest, yet rainiest time. October to April is the best time for exploring the city.

Temperature

Although Hanoi has a significant temperature difference between the four seasons, the climate is generally mild most of the time - there is no bone-chilling cold, and the unbearable heat does not last long.

What is the Hottest Month in Hanoi?

August is the hottest month in Hanoi. Daytime highs generally range from 32 - 38℃ (90 - 100℉), with extreme temperatures hitting 42℃ (108℉), while nighttime lows stay steady at 25 - 30℃ (77 - 86℉). Coupled with the high humidity brought by the oceanic monsoon, you will feel extremely stuffy. As soon as you step out of the air-conditioned room during the day, it feels like you’ve entered a sauna; even in the early morning or evening, the air is still sticky, making it difficult to fully enjoy the sightseeing.

What is the Coldest Month in Hanoi?

January is the coldest month in Hanoi, but it’s rarely severe enough as to make you feel numb. The low temperature usually ranges from 12 to 18℃ (54 -64℉), while the high temperature stays at 17 to 25℃ (63 - 77℉). Specifically, the daytime climate is generally mild, and on sunny days, a long-sleeved shirt is typically sufficient. However, on cloudy days or during the early morning and evening hours when temperatures drop noticeably, the absence of a jacket may increase the risk of catching a cold.

Cool Night at Hoan Kiem Lake

One Pillar Pagoda in Winter

Precipitation

Influenced by the monsoon, Hanoi experiences significant seasonal variations in precipitation: rainfall concentrates predominantly during the summer months: the average monthly precipitation is more than 280 mm, and there are over 16 rainy days each month. The rain during this period is mostly short-duration heavy downpours: it may be bright sunshine one second and then torrential rain the next, causing water accumulation on the streets quickly.

Does Hanoi Get Typhoons?

Yes, Hanoi may be hit by typhoons from June to December, with August and September marking the peak. There may even be two typhoons in a single month. When land, they often bring heavy rainfall: for instance, Typhoon Matmo in October 2025 dumped over 200 mm of rain on Hanoi in one single day. Fortunately, these storms usually move on within 1 - 2 days, and the weather turns sunny and refreshing shortly after.

7-Day Hanoi Weather Forecast

Averages for Hanoi Weather by Month

High/Low Temperatures of Hanoi

Average Temperatures of Hanoi

Average Rainfall of Hanoi

Average Humidity of Hanoi

Best Time to Visit Hanoi

From October to April is the golden time to visit Hanoi. The weather during this period is particularly pleasant: the temperature rarely exceeds 35℃ (95℉), and there is no continuous heavy rain to worry about. Therefore, it is especially suitable for various outdoor activities. Strolling around Ba Dinh Square and taking photos, you don’t have to endure the scorching heat; wandering through the Hanoi Old Quarter, whether walking leisurely or riding a motorcycle, it is both safe and comfortable.

See more: Best Time to Visit Vietnam

Ba Dinh Square

Hanoi Weather by Month and Travel Recommendation

Month	Weather	Peak / Low Season	Recommendation
January	A Bit Cold at Night, Cool in Day, Little Rain	Peak Season
February	A Bit Cold at Night, Cool in Day, Little Rain	Peak Season
March	Turning Warm, Occasional Drizzles	Peak Season
April	Warm, Slightly More Rain	Peak Season
May	Hot, Significantly More Rain	Shoulder Season
June	Scorching, High Rainfall	Low Season
July
August
September	Getting Cool, Scattered Showers	Shoulder Season
October	Cool, Less Rain	Peak Season
November	Cooler, Little Rain	Peak Season
December	Cooler, Little Rain	Peak Season

Hanoi Climate - Seasons & Travel Tips

Spring from March to May

Weather:
Spring in Hanoi is widely regarded as the most comfortable season of the year. The low temperature is generally around 25℃ (77℉), and the high temperature does not exceed 35℃ (95℉), providing favorable conditions for outdoor activities without bother of extreme cold or excessive heat. Moreover, Hanoi sees generally low precipitation in spring: the monthly average rainfall usually does not exceed 90 mm, with no more than 15 rainy days each month. Also, most rainfall consists of light rain or showers - short in duration and having limited impact on travel plans - so there’s no need to overly worry about weather disruptions.

What to Wear:
Mainly bring some T-shirts, long dresses, shorts, thin pants, etc. For early morning, evening or rainy days, it’s best to bring a long-sleeved shirt as well. As for shoes, sports shoes or casual shoes are suitable.

Travel Highlights:
If you’re planning a spring trip to Hanoi, you might have the chance to experience the traditional Hung Kings Commemoration Day, which takes place on the 10th day of the third lunar month, falling on April 26, 2026. Across many commercial areas, lively celebrations will be held, offering you a wonderful opportunity to enjoy traditional Vietnamese music and dance performances. However, be sure to check the official information in advance to confirm the time and location of events, avoiding missing out. Also, it’s best to reserve a taxi in advance, as waiting in line during peak hours can waste a lot of time.

Summer from June to August

Weather:
Hanoi’s summer is scorching: temperatures above 35℃ (95℉) are quite common, and extreme highs of 39 to 42℃ (102 - 108℉) can last for several days, discouraging you from stepping out of your hotels. In addition, in summer, air convection is intense and thus rainfall is exceptionally abundant. Rainy days account for about half of the time period, with an average monthly rainfall of over 280 mm. Sudden downpours often trap you in a street corner cafe.

What to Bring:
Clothes & Shoes: Bring breathable and quick-drying clothes, such as short-sleeved T-shirts, short-sleeved shirts, shorts, skirts, and halter dresses. In addition to sports shoes, it is recommended to bring slippers or sandals.

Others: mosquito repellent, umbrellas, sunscreen, parasols, etc.

Travel Tips:
1. When traveling to Hanoi in summer, it is recommended to conduct outdoor activities in the early morning and late evening, and stay in the hotel for rest during the noon. If you don’t want to waste the noon time, you can choose indoor attractions - for example, the Water Puppet Theatre, where you can enjoy unique performances and experience Vietnamese folk customs.

2. During the rainy period, please avoid going to mountainous areas and low-lying areas to prevent geological disasters such as landslides, mudslides and waterlogging. At the same time, stay away from roadside power poles to prevent the risk of electric shock. Be cautious of hidden potholes.

Water Puppet show in Hanoi

Autumn from September to November

Weather:
After the onset of autumn, Hanoi becomes cooler. The low temperature gradually stabilizes at 15 - 22℃ (59 - 72℉), while the high temperature is 20 - 29℃ (68 - 84℉). Midday city walks are no longer challenging, and shaded areas often provide a noticeably cool sensation. What’s more, as the southwest monsoon weakens, Hanoi’s precipitation falls from 265mm over 16 days in September to 43mm across 6 days in November, while rain shifts from intense convective showers to light drizzles. Such rain barely disrupts trips, but adding a dreamy charm to Hanoi’s old streets amid mist.

What to Wear:
Mainly prepare some T-shirts, shorts, dresses, skirts, long-sleeved shirts, thin pants, and jeans. In the cooler mornings and evenings, you will need to add a coat like light jacket or light knitted cardigans. Bring your sports shoes and slippers.

Travel Highlights:

If you go to Hanoi around September 25th, 2026, you might be able to experience the local Mid-Autumn Festival. You can go to Ma Street to see the lanterns and buy some traditional lion head toys; you can also go to the Imperial Citadel of Thang Long to watch traditional performances such as the Vietnamese Classical Opera.

Lion Dances in Thang Long

Winter from December to February

Weather:
The winter in Hanoi has a gentle chill: sometimes, the temperature may drop below 10℃ (50℉). In addition, Hanoi sees no strong convective weather in winter, with precipitation dropping sharply: monthly average rainfall of 22mm over 13 days, mostly sporadic light rain that rarely soaks the ground. Wearing a raincoat allows you to keep visiting in the rain, with outdoor plans hardly disrupted.

What to Wear:
It is recommended to wear layered clothing to cope with the large temperature difference. For the base layer, prepare some short-sleeved T-shirts, long-sleeved T-shirts and shirts. For the insulation layer, prepare jackets and sweaters. You can wear jeans or casual pants on the bottom. Take sports shoes and casual shoes for extensive walking.

Travel Highlights:
If you visit Hanoi at the end of December, you will be fortunate enough to encounter the grand New Year’s Eve fireworks show. The display starts precisely at midnight on December 31st and lasts for 15 minutes. It is recommended to watch it around Hoan Kiem Lake - the brilliant fireworks light up the night sky and the lake surface, creating a breathtakingly beautiful scene.