Mường Lay in Spring

In spring (March, April and May), Mường Lay sees average daytime highs around 28°C and overnight lows near 18°C, with 670 mm of rain over about 58 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.

Over the season highs climb from about 25°C in early March to 29°C by late May. The sky is clear or mostly clear about 30% of the time across spring, and the air most often feels muggy.

Spring is Mường Lay's 3rd-best season to visit on our travel score. For the whole year in context, see Mường Lay's year-round climate.

Avg daytime high: 28°C; 2nd-warmest season
Avg overnight low: 18°C
Rainfall: 670 mm; 58 wet days
Avg wind: 3 km/h
Travel score: 4.8; 3rd-best season
Months: Mar · Apr · May

← Winter Mường Lay year-round climate Summer →

Spring Summer Fall Winter

Temperature in Mường Lay in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 25°C in early March to 29°C by late May.

A typical spring day in Mường Lay reaches about 28°C and drops to 18°C overnight. The warmest of the three months is May, the coolest March.

How spring really feels in Mường Lay

Once humidity and wind are folded in, spring brings about 13 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Mường Lay 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	21° / 12°	59	8	10.8	6.8
Feb	23° / 12°	54	8.3	11.2	7.1
Mar	26° / 15°	123	13.1	11.8	6.3
Apr	28° / 19°	219	19.5	12.5	4.7
May	29° / 21°	328	25.2	13	3.5
Jun	29° / 23°	455	28.3	13.3	2.9
Jul	29° / 23°	453	29.4	13.2	3.0
Aug	29° / 23°	364	26.9	12.8	3.2
Sep	29° / 22°	187	19.7	12.1	4.2
Oct	27° / 20°	86	13.7	11.5	5.9
Nov	24° / 16°	55	8	10.9	7.2
Dec	21° / 13°	47	6.2	10.7	7.1

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Mường Lay gets around 670 mm of rain over 58 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 3 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

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

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.0 kWh/m².

Planning a trip in spring

Hazard calendar for Mường Lay

In seasonPeak

In spring, Mường Lay overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Mường Lay's monsoon runs April–August, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Mường Lay?

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.

4.8

Sightseeing

3rd-best month of the year

5.4

Beach & pool

2nd-best month of the year

spring is a reasonable time to visit Mường Lay for sightseeing.

What to pack for Mường Lay in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Mường Lay sees daytime highs around 28°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 58 days see rain.

light clothesrain gearsun protection

UV index in Mường Lay in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mường Lay peaks around June 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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)	7	9	11	9	11	14	13	12	10	9	8	6
Level	High	Very high	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	High

	UV index (midday)	Level
Jan	7	High
Feb	9	Very high
Mar	11	Extreme
Apr	9	Very high
May	11	Extreme
Jun	14	Extreme
Jul	13	Extreme
Aug	12	Extreme
Sep	10	Very high
Oct	9	Very high
Nov	8	Very high
Dec	6	High

Air quality in Mường Lay in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Mường Lay is worst in April — around 99 µg/m³ PM2.5 (unhealthy), about 8.1× the cleanest month (July, 12 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)	31	41	73	99	32	14	12	13	17	23	26	30
Level	Moderate	Poor	Unhealthy	Unhealthy	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	31	Moderate
Feb	41	Poor
Mar	73	Unhealthy
Apr	99	Unhealthy
May	32	Moderate
Jun	14	Moderate
Jul	12	Moderate
Aug	13	Moderate
Sep	17	Moderate
Oct	23	Moderate
Nov	26	Moderate
Dec	30	Moderate

Location & terrain

Where is Mường Lay?

Mường Lay sits at 22.0°N, 103.1°E, 496 m above sea level, in Vietnam. The nearest listed city is Lai Châu, 55 km away.

Topography around Mường Lay

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mường Lay.

Within 3 km, the terrain around Mường Lay has large variations in elevation — a maximum elevation change of 987 m around an average of 501 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,867 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,950 m.

The land around Mường Lay is covered by trees (78%) within 3 km, trees (80%) within 16 km, and trees (80%) within 80 km.

3 km

987 m

trees 78%

16 km

1,867 m

trees 80%

80 km

2,950 m

trees 80%

treesgrasslandcroplandartificial surfaceswater

← Winter Mường Lay year-round climate Summer →

Spring weather nearby: Lai Châu 55 km · Dien Bien Phu 69 km · Sapa 82 km · Thị Trấn Thuận Châu 85 km · Lào Cai 102 km · Ít Ong 107 km · Sơn La 111 km · Thị Trấn Phố Lu 114 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 Mường Lay (22°, 103.1333°, elevation 496 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.