Xam Nua in Spring
In spring (March, April and May), Xam Nua sees average daytime highs around 27°C and overnight lows near 17°C, with 386 mm of rain over about 51 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 24°C in early March to 28°C by late May. The sky is clear or mostly clear about 28% of the time across spring, and the air most often feels muggy.
Spring is Xam Nua's 3rd-best season to visit on our travel score. For the whole year in context, see Xam Nua's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 386 mm
- 51 wet days
- Avg wind
- 6 km/h
- Travel score
- 5.4
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Xam Nua in Spring
Over the season highs climb from about 24°C in early March to 28°C by late May.
A typical spring day in Xam Nua reaches about 27°C and drops to 17°C overnight. The warmest of the three months is May, the coolest March.
Xam Nua 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° / 10° | 24 | 4.2 | 10.9 | 7.1 |
| Feb | 22° / 12° | 17 | 3.7 | 11.3 | 7.7 |
| Mar | 25° / 14° | 63 | 10.2 | 11.9 | 6.9 |
| Apr | 27° / 17° | 113 | 17.4 | 12.5 | 5.4 |
| May | 28° / 20° | 209 | 23.6 | 13 | 4.0 |
| Jun | 29° / 21° | 217 | 24.5 | 13.2 | 3.5 |
| Jul | 28° / 21° | 276 | 26.8 | 13.1 | 3.6 |
| Aug | 27° / 20° | 312 | 27.4 | 12.7 | 3.7 |
| Sep | 26° / 19° | 200 | 21.5 | 12.1 | 4.6 |
| Oct | 24° / 17° | 92 | 14.6 | 11.5 | 6.1 |
| Nov | 22° / 14° | 31 | 7 | 11 | 7.2 |
| Dec | 20° / 11° | 18 | 3.6 | 10.8 | 7.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 28% of the time across spring.
Chance of precipitation in Spring
Xam Nua gets around 386 mm of rain over 51 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
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 6 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 36 min in early March to 13 h 06 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 5.2 kWh/m².
Hazard calendar for Xam Nua
In spring, Xam Nua overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Xam Nua's monsoon runs May–September, when most of the year's rain falls.
Is spring a good time to visit Xam Nua?
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 Xam Nua for sightseeing.
What to pack for Xam Nua in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Xam Nua sees daytime highs around 27°C and nights near 17°C. Pack light clothes and rain gear. Worth having: sun protection. About 51 days see rain.
UV index in Xam Nua in Spring
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 Xam Nua peaks around August 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (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) | 8 | 10 | 10 | 9 | 11 | 14 | 13 | 14 | 10 | 10 | 8 | 7 |
| Level | Very high | Very high | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 10 | Extreme |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 10 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Xam Nua 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 Xam Nua is worst in April — around 288 µg/m³ PM2.5 (very unhealthy), about 35.5× the cleanest month (August, 8 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) | 20 | 28 | 98 | 288 | 64 | 14 | 9 | 8 | 11 | 15 | 15 | 19 |
| Level | Moderate | Moderate | Unhealthy | Very unhealthy | Unhealthy | Moderate | Good | Good | Good | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 28 | Moderate |
| Mar | 98 | Unhealthy |
| Apr | 288 | Very unhealthy |
| May | 64 | Unhealthy |
| Jun | 14 | Moderate |
| Jul | 9 | Good |
| Aug | 8 | Good |
| Sep | 11 | Good |
| Oct | 15 | Moderate |
| Nov | 15 | Moderate |
| Dec | 19 | Moderate |
Where is Xam Nua?
Xam Nua sits at 20.4°N, 104.0°E, 957 m above sea level, in Laos. The nearest listed city is Vieng Xai, 19 km away.
Topography around Xam Nua
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Xam Nua.
Within 3 km, the terrain around Xam Nua has significant variations in elevation — a maximum elevation change of 373 m around an average of 1,033 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,118 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,963 m.
The land around Xam Nua is covered by trees (65%) within 3 km, trees (83%) within 16 km, and trees (82%) within 80 km.
Laos travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C / E / F
- 230 V · 50 Hz
- Prices
- ≈ 23% of US
- price level, 2025
- GDP per capita
- $2,325
- 2025
- Happiness
- 5.5 / 10
- World Happiness, 2025
- Safe drinking water
- 35%
- of population, 2024
- Road deaths
- 17.9
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Low
- EF EPI 461
- 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 Xam Nua (20.4164°, 104.045°, elevation 957 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.