Hanoi in Spring
In spring (March, April and May), Hanoi sees average daytime highs around 28°C and overnight lows near 22°C, with 383 mm of rain over about 38 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 23°C in early March to 33°C by late May. The sky is clear or mostly clear about 11% of the time across spring, and the air most often feels miserable.
Spring is Hanoi's 3rd-best season to visit on our travel score. For the whole year in context, see Hanoi's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 383 mm
- 38 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.0
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Hanoi in Spring
Over the season highs climb from about 23°C in early March to 33°C by late May.
A typical spring day in Hanoi reaches about 28°C and drops to 22°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Hanoi
Once humidity and wind are folded in, spring brings about 45 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Hanoi weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 15° | 40 | 7.7 | 10.9 | 6.3 |
| Feb | 22° / 16° | 26 | 6.7 | 11.3 | 6.6 |
| Mar | 25° / 19° | 52 | 9.6 | 11.9 | 6.5 |
| Apr | 29° / 22° | 100 | 11.1 | 12.5 | 5.2 |
| May | 32° / 25° | 232 | 17.5 | 13 | 3.3 |
| Jun | 33° / 27° | 226 | 18.3 | 13.3 | 2.4 |
| Jul | 33° / 27° | 259 | 20.4 | 13.1 | 2.4 |
| Aug | 33° / 26° | 314 | 22.5 | 12.7 | 2.5 |
| Sep | 32° / 25° | 226 | 18.7 | 12.1 | 3.3 |
| Oct | 29° / 23° | 121 | 11.9 | 11.5 | 5.2 |
| Nov | 26° / 19° | 57 | 7.3 | 11 | 7.1 |
| Dec | 22° / 16° | 33 | 6.6 | 10.7 | 7.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 11% of the time across spring.
Chance of precipitation in Spring
Hanoi gets around 383 mm of rain over 38 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 30 min in early March to 13 h 12 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 3.9 kWh/m².
Hazard calendar for Hanoi
In spring, Hanoi overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Hanoi sits in the Pacific typhoon belt; the season peaks July–October.
Hanoi's monsoon runs May–September, when most of the year's rain falls.
Is spring a good time to visit Hanoi?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Hanoi for sightseeing.
What to pack for Hanoi in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Hanoi sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 38 days see rain.
UV index in Hanoi in Spring
Clear-sky midday UV across spring averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hanoi peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 7 | 9 | 6 | 8 | 11 | 10 | 9 | 8 | 8 | 6 | 6 |
| Level | High | Very high | Very high | High | Very high | Extreme | Extreme | Very high | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 6 | High |
Air quality in Hanoi in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Hanoi is worst in December — around 81 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (July, 24 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Hanoi's WHO annual average of 52.1 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 76 | 64 | 58 | 50 | 36 | 28 | 24 | 32 | 45 | 59 | 72 | 81 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate | Moderate | Poor | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 76 | Unhealthy |
| Feb | 64 | Unhealthy |
| Mar | 58 | Unhealthy |
| Apr | 50 | Poor |
| May | 36 | Poor |
| Jun | 28 | Moderate |
| Jul | 24 | Moderate |
| Aug | 32 | Moderate |
| Sep | 45 | Poor |
| Oct | 59 | Unhealthy |
| Nov | 72 | Unhealthy |
| Dec | 81 | Unhealthy |
Where is Hanoi?
Hanoi sits at 21.0°N, 105.8°E, 10 m above sea level, in Vietnam. The nearest listed city is Hoàn Kiếm, 1.0 km away.
Topography around Hanoi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hanoi.
Within 3 km, the terrain around Hanoi has only modest variations in elevation — a maximum elevation change of 24 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 36 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.
The land around Hanoi is covered by artificial surfaces (71%) within 3 km, artificial surfaces (38%), trees (27%) and cropland (22%) within 16 km, and trees (52%) and cropland (33%) within 80 km.
Vietnam travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C / F
- 220 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,066
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Safe drinking water
- 59%
- of population, 2024
- Homicide rate
- 1.5
- per 100k, 2011
- Road deaths
- 30.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 500
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hanoi (21.0245°, 105.8412°, elevation 10 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.