Móng Cái in Spring
In spring (March, April and May), Móng Cái sees average daytime highs around 24°C and overnight lows near 22°C, with 354 mm of rain over about 45 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 19°C in early March to 29°C by late May. The sky is clear or mostly clear about 16% of the time across spring, and the air most often feels oppressive.
Spring is Móng Cái's 3rd-best season to visit on our travel score. For the whole year in context, see Móng Cái's year-round climate.
- Avg daytime high
- 24°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 354 mm
- 45 wet days
- Avg wind
- 12 km/h
- Travel score
- 5.6
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Móng Cái in Spring
Over the season highs climb from about 19°C in early March to 29°C by late May.
A typical spring day in Móng Cái reaches about 24°C and drops to 22°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Móng Cái
Once humidity and wind are folded in, spring brings about 14 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.
Móng Cái 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 | 17° / 14° | 69 | 12.7 | 10.8 | 5.0 |
| Feb | 18° / 15° | 50 | 11 | 11.3 | 5.4 |
| Mar | 21° / 18° | 74 | 13.1 | 11.8 | 5.7 |
| Apr | 24° / 22° | 71 | 12.7 | 12.5 | 6.2 |
| May | 28° / 25° | 209 | 19 | 13 | 4.8 |
| Jun | 30° / 27° | 288 | 23.5 | 13.3 | 3.4 |
| Jul | 30° / 27° | 380 | 25 | 13.2 | 3.2 |
| Aug | 30° / 27° | 374 | 24.6 | 12.7 | 3.3 |
| Sep | 29° / 26° | 253 | 18.6 | 12.1 | 4.3 |
| Oct | 27° / 24° | 99 | 10.3 | 11.5 | 6.7 |
| Nov | 23° / 20° | 67 | 9.1 | 11 | 7.1 |
| Dec | 19° / 16° | 53 | 8.8 | 10.7 | 6.3 |
Cloud cover in Spring
The sky is clear or mostly clear about 16% of the time across spring.
Chance of precipitation in Spring
Móng Cái gets around 354 mm of rain over 45 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 12 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 4.5 kWh/m².
Hazard calendar for Móng Cái
In spring, Móng Cái overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Móng Cái sits in the Pacific typhoon belt; the season peaks July–October.
Móng Cái's monsoon runs May–September, when most of the year's rain falls.
Is spring a good time to visit Móng Cái?
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 Móng Cái for sightseeing.
What to pack for Móng Cái in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Móng Cái sees daytime highs around 24°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 45 days see rain.
Sea temperature near Móng Cái in Spring
The nearest coast averages about 23°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 km away) is warmest in August at about 30°C and coldest in February near 19°C.
It's comfortable for a long swim from Mar 15 to Dec 30 — about 9.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 19 | 19 | 20 | 23 | 27 | 29 | 29 | 30 | 29 | 27 | 24 | 21 |
| Comfort | Cool | Cool | Refreshing | Refreshing | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 19 | Cool |
| Mar | 20 | Refreshing |
| Apr | 23 | Refreshing |
| May | 27 | Warm |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 27 | Warm |
| Nov | 24 | Warm |
| Dec | 21 | Refreshing |
UV index in Móng Cái in Spring
Clear-sky midday UV across spring averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Móng Cái peaks around July 9 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 | 8 | 9 | 8 | 10 | 12 | 12 | 8 | 9 | 9 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Very high | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 8 | Very high |
| Sep | 9 | Very high |
| Oct | 9 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Móng Cái 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 Móng Cái is worst in December — around 46 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (July, 16 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 45 | 42 | 44 | 38 | 25 | 17 | 16 | 18 | 25 | 32 | 35 | 46 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 45 | Poor |
| Feb | 42 | Poor |
| Mar | 44 | Poor |
| Apr | 38 | Poor |
| May | 25 | Moderate |
| Jun | 17 | Moderate |
| Jul | 16 | Moderate |
| Aug | 18 | Moderate |
| Sep | 25 | Moderate |
| Oct | 32 | Moderate |
| Nov | 35 | Moderate |
| Dec | 46 | Poor |
Where is Móng Cái?
Móng Cái sits at 21.5°N, 108.0°E, 9 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Đầm Hà, 43 km away.
Topography around Móng Cái
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Móng Cái.
Within 3 km, the terrain around Móng Cái has only modest variations in elevation — a maximum elevation change of 43 m around an average of 8 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 367 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,472 m.
The land around Móng Cái is covered by artificial surfaces (38%) and trees (24%) within 3 km, water (44%) and trees (38%) within 16 km, and trees (53%) and water (40%) 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 Móng Cái (21.5247°, 107.9662°, elevation 9 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.