Hanoi Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Hanoi’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in Vietnam.
Monthly Temperature Averages
With significant temperature fluctuations, Hanoi enjoys distinct seasons year-round. On average, maximum daytime temperatures range from a very warm 35°C in June to a pleasant 21°C in January. Nighttime temperatures can drop, with averages reaching 15°C in January.
The chart below illustrates the average maximum day and minimum night temperatures in Hanoi by month:
The minimum temperature is commonly observed between 4 AM and 6 AM, with the maximum occurring around 3 PM, when the sun’s strength is at its peak. June, the city’s warmest month, sees 171 hours of sunshine.
The chart below shows the average temperature throughout the year:
January, the city’s coldest month, sees about 47 mm of rainfall spread over roughly 10 days. It records 68 hours of sunshine of sunshine.
Annual Temperatures in Vietnam Compared
The map below shows the annual temperature across Vietnam. You can also select the different months in case you are interested in a specific month.






Hanoi Temperatures Compared World Wide
Hanoi’s average annual maximum temperature is 29°C. Let’s compare this with some popular tourist destinations:
Seville, Spain, stands out with its warm Mediterranean climate and an average annual temperature of 23°C.
In Toronto, Canada, the average annual temperature is 13°C, with snowy winters and warm summers.
Chicago, USA, has a significant seasonal range, with an average annual temperature of 15°C.
Adelaide, Australia, enjoys warm summers and mild winters, with an average annual temperature of 21°C.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
In Hanoi, during the coolest month, January, you will experience 81% humidity, which is considered very high. This is accompanied by an average maximum temperature of 21°C. In the warmest month, June, the humidity is 83% combined with an average maximum temperature of 35°C, which creates a very high-feel temperature. Explore our detailed page on humidity levels for further details.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Effects of Temperature on Weather and Climate
Temperature variations influence precipitation patterns in Amsterdam:
Rainfall: Warm air holds more moisture, leading to heavier rain during warmer months. However, precipitation is generally moderate year-round.
Snow: Occasional snowfall occurs in winter, though it rarely lasts very long.
For more detailed information about Hanoi’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Hanoi climate page.