Hanoi Weather in May

May marks the last month of spring in Hanoi, with the weather turning hot and precipitation becoming frequent. However, it is not the hottest and rainiest time of the year yet. Overall, flexible itineraries give a leg-up over a fine trip.

Intense Heat

In May, temperatures in Hanoi climb noticeably - though it is categorized as spring season, it already feels much like summer. Daytime highs range from 28 to 34 degrees Celsius (82 - 93 degrees Fahrenheit), and even hit 36℃ (97℉) on some hottest days. Paired with a high humidity level of around 75%, the air creates a natural sauna-like ambiance. Fortunately, the nighttime lows stay between 22 - 27℃ (72 - 81℉), making early mornings and evenings refreshing and comfortable - the perfect time to stroll through the Old Quarter’s streets and alleys.

Heavy Rainfall

Hanoi experiences a gradually increasing amount of rainfall in May, with an average monthly precipitation of 188 mm and about 14 rainy days. The rainfall is often sudden and intense. You might be unhurriedly wandering along the Train Street when suddenly, large raindrops start pattering down, forcing you to go indoors. The roads quickly fill with puddles. However, being short-lived, it won’t take long before the rain stops abruptly and the sky clears up, allowing you to continue your sightseeing. 

Extensive Daytime and Sunshine Duration

Hanoi in May sees approximately 13 to 13.5 hours daytime, with sunrise at 5:13 - 5:25 and sunset at 18:22 - 18:35. This means that even if you take a rest during the scorching midday hours, there are still about 3 to 4 hours of bright daylight in the morning and afternoon respectively, which is enough for you to visit the scenic spots at a leisurely pace.

In addition, the effective sunshine duration in May is also quite good, with an average of 4 hours per day. The fine weather can help you easily capture atmospheric photos. However, it is important to note that the ultraviolet index this month is above level 11, which is an extreme level. Even on cloudy or rainy days, you must not slack off on sun protection.

Is May a Good Time to Visit Hanoi?

May is not the best time, yet not the worst time to visit Hanoi. After all, the weather is getting hot and the rainfall is relatively frequent. But compared with the following months, this is definitely not the worst period: there is no extreme heat above 38℃ (100℉), the rainfall is not excessive, and there is no trouble of typhoons.

Besides, except for a few days around May 1st, Vietnam’s Labor Day, when the city’s scenic spots are a bit more crowded, there are not many tourists at other times. You can enjoy a peaceful journey, visiting attractions and trying local snacks without having to push your way through the crowds.

Packing List for Hanoi Trip in May

Clothes: It is advisable to bring lightweight and breathable clothes, such as quick-drying T-shirts, short-sleeved shirts, vests, dresses, skirts, shorts, and thin long pants. To cope with the cold air from indoor air conditioners, it is recommended to take a thin jacket, or you can pack a long-sleeved sun-protective clothing for keeping out both the cold in air-conditioned room and intense sun outdoors.

Shoes: If you plan to do a lot of city walking, it is recommended that you bring sports shoes or walking shoes. If you prefer a more laid-back and casual style, or if you want to avoid having your shoes soaked in sudden downpours, it is suggested that you bring sandals or slippers.

Others: Sunscreen, sun hat, sunglasses, parasol, umbrella, mosquito repellent liquid

Travel Recommendations for Hanoi in May

When visiting Hanoi in May, it is strongly recommended to flexibly plan your daily itinerary based on the weather for a more comfortable and enjoyable experience.

First, arrange outdoor activities in the early morning and late evening hours, when the climate is relatively cool. For instance, in the early morning, you can take a stroll around Hoan Kiem Lake, watching the sunlight gradually spreading across the lake surface, serene and beautiful. Locals often gather here for morning workouts, and you can even join in to learn some simple moves. In the evening, head to the night market to taste local specialties such as Vietnamese spring rolls and coconut ice cream, a truly delightful experience.

As for hot midday hours or rainy periods, you can visit classic indoor attractions such as the National History Museum and the Vietnam Women’s Museum. Also, you can opt for a more fun experience: sign up for a cooking class, follow a local chef to the market to select ingredients, and learn to make Vietnamese specialties by yourself. It’s a fantastic way to experience the hustle and bustle of the market and savor the tasty food you’ve prepared.

Tips

1. The short but heavy rain in May can cause waterlogging on the roads. After the rain, be cautious of hidden potholes or loose manhole covers when going out. Also, stay away from electrical boxes and power poles to avoid electric shock.

2. High temperatures during the midday can easily lead to dehydration and heatstroke. It is recommended to avoid staying outdoors for long periods and to carry and replenish electrolyte water. Additionally, some indoor attractions and street-side restaurants do not have air conditioning, so it is advisable to bring a portable fan.

3. Around the Labor Day holiday, there will be a large number of people everywhere. If you prefer a quiet trip, it is recommended to avoid traveling during May 1st to 5th, 2026.

Hanoi Weather by Month