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Vientiane Weather

Vientiane weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: Jan, Feb, Oct, Nov and Dec.

Vientiane current weather

Vientiane now (local time 16:45)

28°C

Thunderstorm

Feels like
34°
Humidity
85%
Wind
3 km/h

Next 7 days · what to wear

22° – 32°C

Rain likely on 4 of 7 days

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella.

Vientiane 14-day forecast

  1. Today

    10/4

    ⛈️

    32°

    24°

    💧72%

  2. Mon

    10/5

    ⛈️

    30°

    24°

    💧91%

  3. Tue

    10/6

    🌦️

    30°

    22°

    💧71%

  4. Wed

    10/7

    🌦️

    30°

    22°

    💧27%

  5. Thu

    10/8

    ☁️

    30°

    23°

    💧2%

  6. Fri

    10/9

    🌦️

    31°

    24°

    💧8%

  7. Sat

    10/10

    🌧️

    28°

    23°

    💧43%

  8. Sun

    10/11

    ☁️

    31°

    23°

    💧17%

  9. Mon

    10/12

    ⛅

    30°

    23°

    💧13%

  10. Tue

    10/13

    ☁️

    32°

    24°

    💧22%

  11. Wed

    10/14

    ☀️

    31°

    24°

    💧25%

  12. Thu

    10/15

    ☀️

    31°

    23°

    💧26%

  13. Fri

    10/16

    ☀️

    31°

    25°

    💧22%

  14. Sat

    10/17

    ☀️

    31°

    24°

    💧20%

🔔 Watch my Vientiane trip

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Best time to visit Vientiane

On temperature and rainfall, the most comfortable months in Vientiane are Jan, Feb, Oct, Nov and Dec. The hottest month is April (average high 37°C) and the coldest is December (average low 15°C).

Jan28°15°Feb32°18°Mar35°22°Apr37°25°May34°25°Jun32°24°Jul31°24°Aug30°24°Sep30°23°Oct30°21°Nov29°18°Dec27°15°

Vientiane climate by month

MonthAvg highAvg lowRainHumidityvs Hong Kong
JanBest28°C15°C8 mm65%+5°C
FebBest32°C18°C13 mm57%+7°C
Mar35°C22°C35 mm52%+8°C
Apr37°C25°C61 mm55%+7°C
May34°C25°C168 mm70%+3°C
Jun32°C24°C170 mm79%0°C
Jul31°C24°C203 mm82%-2°C
Aug30°C24°C246 mm85%-2°C
Sep30°C23°C204 mm85%-1°C
OctBest30°C21°C85 mm82%-1°C
NovBest29°C18°C16 mm76%+1°C
DecBest27°C15°C6 mm71%+3°C

Data: NASA POWER 2001–2020 climatology (MERRA-2, elevation-corrected); Hong Kong comparison uses HKO 1991–2020 normals.

Vientiane weather month by month: what to wear

Vientiane in OctoberBest monthThis month

October in Vientiane is warm to hot: average highs of 30°C and lows of 21°C, around 85 mm of rain (some rain) and 82% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; humid, so quick-dry fabrics help.

Vientiane in NovemberBest month

November in Vientiane is warm to hot: average highs of 29°C and lows of 18°C, around 16 mm of rain (dry) and 76% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.

Vientiane in DecemberBest month

December in Vientiane is warm to hot: average highs of 27°C and lows of 15°C, around 6 mm of rain (dry) and 71% humidity — about 3°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.

Vientiane in JanuaryBest month

January in Vientiane is warm to hot: average highs of 28°C and lows of 15°C, around 8 mm of rain (dry) and 65% humidity — about 5°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.

Vientiane in FebruaryBest month

February in Vientiane is hot: average highs of 32°C and lows of 18°C, around 13 mm of rain (dry) and 57% humidity — about 7°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; big day–night swing, so dress in layers.

Vientiane in March

March in Vientiane is hot: average highs of 35°C and lows of 22°C, around 35 mm of rain (mostly dry) and 52% humidity — about 8°C warmer than Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; big day–night swing, so dress in layers.

Vientiane in April

April in Vientiane is hot: average highs of 37°C and lows of 25°C, around 61 mm of rain (mostly dry) and 55% humidity — about 7°C warmer than Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; big day–night swing, so dress in layers.

Vientiane in May

May in Vientiane is hot: average highs of 34°C and lows of 25°C, around 168 mm of rain (wet) and 70% humidity — about 3°C warmer than Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; big day–night swing, so dress in layers; it's wet, so pack a compact umbrella.

Vientiane in June

June in Vientiane is hot: average highs of 32°C and lows of 24°C, around 170 mm of rain (wet) and 79% humidity — about the same as Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella.

Vientiane in July

July in Vientiane is hot: average highs of 31°C and lows of 24°C, around 203 mm of rain (wet) and 82% humidity — about 2°C colder than Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Vientiane in August

August in Vientiane is warm to hot: average highs of 30°C and lows of 24°C, around 246 mm of rain (wet) and 85% humidity — about 2°C colder than Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

Vientiane in September

September in Vientiane is warm to hot: average highs of 30°C and lows of 23°C, around 204 mm of rain (wet) and 85% humidity — about the same as Hong Kong.

👕 T-shirts, shorts and breathable fabrics; sunscreen and water; it's wet, so pack a compact umbrella; humid, so quick-dry fabrics help.

FAQ

›What is the best time to visit Vientiane?

On temperature and rainfall, the most comfortable months in Vientiane are Jan, Feb, Oct, Nov and Dec. The hottest month is April (average high 37°C) and the coldest is December (average low 15°C).

›What's the weather like in Vientiane in October, and what should I wear?

October in Vientiane is warm to hot: average highs of 30°C and lows of 21°C, around 85 mm of rain (some rain) and 82% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; humid, so quick-dry fabrics help.

›What's the weather like in Vientiane in November, and what should I wear?

November in Vientiane is warm to hot: average highs of 29°C and lows of 18°C, around 16 mm of rain (dry) and 76% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.

›When is the rainy season in Vientiane?

Vientiane is wettest in August, with about 246 mm on average, and driest in December, with about 6 mm.

›How cold does Vientiane get? Does it snow?

The coldest month is December, averaging 27°C by day and 15°C at night. Snow is very unlikely.

Planning a trip to Vientiane?

More Laos weather

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Popular destinations in October

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Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: April; coldest: December.