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Hanoi in May: Weather, Average temperature and Climate

Take a look at past year’s weather for Hanoi in May and see if it is worth visiting.
Check flight prices to Hanoi on Avionero:
May

Weather in Hanoi in May 2025

OK Weather
Hot
🌧️
Rainy
Hanoi in May usually sees fair weather conditions, with an average daily high temperature of +90°F and roughly 1 sunny days. However, you should prepare for about 21 rainy days with an average precipitation of 232 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+90°F
Avg. max. temperature
+63°F
Min.
+104°F
Max.
232 mm
Total precipitation
81%
Avg. humidity
1 m/s
Avg. wind
1 ☀️
Sunny Days
7 ⛅️
Cloudy
21 🌦
Rainy
Our opinion: Hanoi has OK weather in May.

Average temperature in Hanoi in May

Here are the expected maximum, average and minimum temperatures in Hanoi for May based on the historical data.
Last Year
Historical Data

The temperature in May is +91°F on average, with a range between a maximum of +102°F during the day and a minimum of +70°F at night.

The average maximum temperature goes up 33% by the end of the month, compared with the beginning of the month, from +86°F to +97°F.

Is Hanoi warm or cold in May?

Hanoi is typically hot in May.

Maximum temperatures go up compared to the previous month from +82°F to +90°F. The minimum temperature also goes up from +72°F to +77°F.

Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.

Take a look at how May is compared to other months in Hanoi:

Climate in Hanoi in May

Hanoi weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+82°F+90°F+91°F
Min. temperature
+55°F+63°F+70°F
Max. temperature
+102°F+104°F+108°F
Rainfall
103 mm232 mm243 mm
Wind
1 m/s1 m/s1 m/s
Humidity
82%81%80%
Air pressure
1009 HPa1005 HPa1002 HPa
Sunny days
111
Cloudy days
1076
Rainy days
172122
Snowy days
000

May weather is still as ok as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +82°F to +90°F during the day. Prepare for more rain. Average rainfall goes from 103 mm to 232 mm. It feels drier, as humidity decreases from 82% to 81%. The average wind speed doesn’t change much during May, staying around 1 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.

Next month (June) brings a further decline in the weather.

Wind

Wind speed in Hanoi in May based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Hanoi is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Hanoi based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in May stands at 45%, leading to total precipitation of around 139 mm. The maximum amount of rainfall per day is around 42 mm, which is moderate rain. May is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Hanoi wettest month is August, where a typical day has a 81% chance of precipitation and 310 mm of rainfall per day. December, on the other hand, is the driest month with a mere 35% chance of precipitation and 27 mm of rainfall per day.

How was the weather last May in Hanoi?

This is the weather in Hanoi in May 2023:
1 May
☁️
+85°F
2 May
☁️
+86°F
3 May
☀️
+88°F
4 May
☀️
+92°F
5 May
☀️
+99°F
6 May
☀️
+101°F
7 May
🌧️
+94°F
8 May
☁️
+79°F
9 May
☁️
+81°F
10 May
🌧️
+87°F
11 May
🌧️
+88°F
12 May
☁️
+80°F
13 May
☁️
+76°F
14 May
☁️
+82°F
15 May
☁️
+87°F
16 May
☁️
+96°F
17 May
☀️
+102°F
18 May
☀️
+101°F
19 May
☀️
+97°F
20 May
☀️
+96°F
21 May
☀️
+98°F
22 May
☀️
+100°F
23 May
☁️
+90°F
24 May
☁️
+88°F
25 May
☁️
+90°F
26 May
☁️
+89°F
27 May
☀️
+89°F
28 May
☁️
+91°F
29 May
☀️
+95°F
30 May
☀️
+97°F
31 May
☀️
+97°F
In May 2023 Hanoi had 14 sunny days, 14 cloudy days, and 3 rainy days. The average maximum temperature was +91°F, with an absolute maximum of +102°F and a minimum of +75°F. The average humidity was 80%, with a maximum of 100% and a minimum of 38%. The average wind speed was 2 m/s, with a maximum of 6 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Hanoi climate has changed over the last 43 years.

The climate in Hanoi in May has not changed that much over the last 43 years.

The average temperature was the lowest in 2011 (+79°F) and the highest in 2019 (+84°F). The driest year was 2004 with only 1210 mm of rainfall, and the wettest year was 1981 with 2188 mm.

FAQ

Frequently asked questions about the weather in Hanoi in May:

Is May a good time to visit Hanoi?

It’s always a good time to visit Hanoi, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Hanoi in May?

Absolutely, May is hot in Hanoi. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.

Is Hanoi rainy in May?

Hanoi is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Hanoi in May?

Usually, it’s not very sunny in Hanoi in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Vietnam

Check out the weather for other cities in Vietnam.

Monthly weather in Hanoi

Source of the data

For this page, we’ve looked at the typical weather in Hanoi, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.