Climate · Laos

Vientiane

Hot and mostly dry from March to April; warm and dry from December to January.

Typical weather, averaged over 30 years18.0°N160 m above the sea
  1. Jan84°29°62°17°Rain on fewer than one day a week.
  2. Feb87°31°64°18°Rain on about one day a week.
  3. Mar93°34°71°22°Rain on about one day a week.
  4. Apr96°36°76°24°Rain on about two days a week.
  5. May93°34°77°25°Rain on about five days a week.
  6. Jun91°33°77°25°Rain on about six days a week.
  7. Jul89°32°76°24°Rain on about six days a week.
  8. Aug89°32°76°24°Rain on about six days a week.
  9. Sep89°32°75°24°Rain on about six days a week.
  10. Oct88°31°74°23°Rain on about three days a week.
  11. Nov88°31°69°21°Rain on about one day a week.
  12. Dec84°29°63°17°Rain on fewer than one day a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The hot season runs from March to April, with highs near 95°F and nights near 73°F. From December to January, highs are nearer 84°F. The rain comes from May to September, on about six days a week. November to March is the driest stretch, with rain on about one day a week. Daylight runs from about 11 hours in December to 13 hours in June.The hot season runs from March to April, with highs near 35°C and nights near 23°C. From December to January, highs are nearer 29°C. The rain comes from May to September, on about six days a week. November to March is the driest stretch, with rain on about one day a week. Daylight runs from about 11 hours in December to 13 hours in June.

Where Vientiane sits

Asia/Vientiane

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
18.0°Nnorthern hemisphere
Above the sea
160 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
6:43 AM6:37 AM6:19 AM5:54 AM5:37 AM5:34 AM5:42 AM5:52 AM5:57 AM6:02 AM6:15 AM6:33 AMsets 5:53 PMsets 6:10 PMsets 6:20 PMsets 6:26 PMsets 6:35 PMsets 6:46 PMsets 6:49 PMsets 6:37 PMsets 6:13 PMsets 5:48 PMsets 5:33 PMsets 5:36 PM
Nearest of ours
Luang Prabang220 km north

The land around Vientiane, shaded by its typical high in January, the planning map's own layer.The land around Vientiane, shaded by its typical high in February, the planning map's own layer.The land around Vientiane, shaded by its typical high in March, the planning map's own layer.The land around Vientiane, shaded by its typical high in April, the planning map's own layer.The land around Vientiane, shaded by its typical high in May, the planning map's own layer.The land around Vientiane, shaded by its typical high in June, the planning map's own layer.The land around Vientiane, shaded by its typical high in July, the planning map's own layer.The land around Vientiane, shaded by its typical high in August, the planning map's own layer.The land around Vientiane, shaded by its typical high in September, the planning map's own layer.The land around Vientiane, shaded by its typical high in October, the planning map's own layer.The land around Vientiane, shaded by its typical high in November, the planning map's own layer.The land around Vientiane, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 84°F in December and January to 96°F in April.Highs from 29°C in December and January to 36°C in April.

Chance of a wet day

Wettest in August (89% of days), driest in December (4%).

Cloud cover

Clearest in February (41% cover), cloudiest in June (84%).

Daylight

From 11h 04m in December to 13h 11m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Vientiane, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryAt its best
62°17°84°29°
no days43%11h 11m
February
64°18°87°31°
1 day41%11h 32m
MarchHot season
71°22°93°34°
1 day44%12h 01m
AprilHot season
76°24°96°36°
2 days57%12h 32m
MayRainy season
77°25°93°34°
5 days77%12h 58m
JuneRainy season
77°25°91°33°
6 days84%13h 11m
JulyRainy season
76°24°89°32°
6 days83%13h 05m
AugustRainy season
76°24°89°32°
6 days83%12h 42m
SeptemberRainy season
75°24°89°32°
6 days79%12h 12m
October
74°23°88°31°
3 days68%11h 41m
November
69°21°88°31°
1 day55%11h 16m
DecemberAt its best
63°17°84°29°
no days47%11h 04m

When is the best time to visit Vientiane?


The best months are December to January: highs near 84°F, nights near 62°F, and rain on fewer than one day a week.The best months are December to January: highs near 29°C, nights near 17°C, and rain on fewer than one day a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions


What is the warmest month in Vientiane?

April, with highs near 96°F and lows near 76°F. The coolest are December and January, with highs near 84°F.April, with highs near 36°C and lows near 24°C. The coolest are December and January, with highs near 29°C.

When does it rain most in Vientiane?

August, with rain on about six days a week. December is the driest, with rain on fewer than one day a week.

How long are the days in Vientiane?

From about 11 hours in December to 13 hours in June.

When are the skies clearest in Vientiane?

February, when cloud covers about 41% of the sky on average. June is the cloudiest, at about 84%.

Places with a year like Vientiane's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Vientiane's through the year, one place a country. “Six months apart”: their winter is Vientiane's summer.

Elsewhere in Laos

All of Laos

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Vientiane. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.