Viangsai

Province · Hūaphan, 🇱🇦 Laos

Area 1,541 km²

Time zone Asia/Vientiane

Viangsai

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Viangsai — Map

Viangsai — Map

Climate & when to visit

Best time to visit: January, February, November, December

Select a month

Typical weather in January

Great

21° · extremes 3°–29°
9° at night
4 rainy days
5 sunny days
4 hours of sunshine per day
Dry air
Calm winds
UV index 5 · moderate

Typical weather in February

Great

25° · extremes 5°–33°
11° at night
3 rainy days
5 sunny days
4 hours of sunshine per day
Dry air
Calm winds
UV index 6 · high

Typical weather in March

Good

29° (feels like 30°) · extremes 9°–36°
15° at night
8 rainy days
3 sunny days
4 hours of sunshine per day
Comfortable humidity
Calm winds
UV index 6 · high

Typical weather in April

Poor

32° (feels like 34°) · extremes 13°–38°
18° at night
12 rainy days
3 sunny days
5 hours of sunshine per day
Muggy, humid air
Calm winds
UV index 7 · high

Up to 7 days above 35°

Typical weather in May

Poor

32° (feels like 35°) · extremes 16°–38°
20° at night
19 rainy days
3 sunny days
6 hours of sunshine per day
Muggy, humid air
Calm winds
UV index 9 · very high

Up to 6 days above 35°

Typical weather in June

Poor

31° (feels like 35°) · extremes 20°–36°
22° at night
20 rainy days
2 sunny days
5 hours of sunshine per day
Oppressive humidity
Calm winds
UV index 9 · very high

Typical weather in July

Poor

31° (feels like 34°) · extremes 20°–35°
22° at night
22 rainy days
3 sunny days
5 hours of sunshine per day
Oppressive humidity
Calm winds
UV index 9 · very high

Typical weather in August

Poor

30° (feels like 34°) · extremes 20°–34°
21° at night
23 rainy days
2 sunny days
5 hours of sunshine per day
Oppressive humidity
Calm winds
UV index 8 · very high

Typical weather in September

Poor

29° (feels like 32°) · extremes 17°–33°
20° at night
19 rainy days
3 sunny days
5 hours of sunshine per day
Muggy, humid air
Calm winds
UV index 7 · high

Typical weather in October

Good

26° (feels like 28°) · extremes 13°–31°
17° at night
13 rainy days
2 sunny days
4 hours of sunshine per day
Muggy, humid air
Calm winds
UV index 6 · high

Typical weather in November

Great

24° (feels like 25°) · extremes 8°–30°
14° at night
7 rainy days
7 sunny days
5 hours of sunshine per day
Comfortable humidity
Calm winds
UV index 5 · moderate

Typical weather in December

Great

20° · extremes 4°–28°
9° at night
4 rainy days
6 sunny days
4 hours of sunshine per day
Dry air
Calm winds
UV index 4 · moderate

Climate data: NASA POWER (MERRA-2) · 1996–2025

Practical information

Currency: Laotian Kip LAK · Card payments · Cash preferred
Electricity: Type A / Type B / Type C / Type E / Type F
230 V · 50 Hz

Languages: Lao
Tap water: Not safe to drink
Driving side: Right
Calling code: +856

Tours & Activities

Related destinations

Other Destinations

Xam Neua Nam Et-Phou Louey National Biodiversity Conservation Area