10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain showers
22°
Feels like 30°
Wind↑ N 4 km/h
Humidity 96 %
💧 3.0 mm
Evening
Rain showers
24°
Feels like 33°
Wind↑ NW 6 km/h
Humidity 80 %
💧 0.4 mm
⚡ storm
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain showers
21°
Feels like 29°
Wind↑ NW 3 km/h
Humidity 94 %
💧 0.6 mm
Evening
Rain showers
24°
Feels like 32°
Wind↑ N 7 km/h
Humidity 84 %
💧 1.2 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
21°
Feels like 29°
Wind↑ NW 4 km/h
Humidity 94 %
Evening
Rain showers
24°
Feels like 32°
Wind↑ NNE 5 km/h
Humidity 79 %
💧 0.2 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
21°
Feels like 28°
Wind↑ WNW 1 km/h
Humidity 88 %
Evening
Drizzle
24°
Feels like 32°
Wind↑ NNW 6 km/h
Humidity 79 %
💧 0.5 mm
Vientiane forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +2.7° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Vientiane climate: what a normal year looks like
Ranked against the 15 towns of 20,000+ people in Laos, Vientiane has the highest mean temperature.
Afternoons reach 30 °C or more from February to November; the typical peak is 35 °C in April.
A normal year brings roughly 1,930 mm of rain — more than 87% of the towns of 20,000+ people we compared it with.
The wet season is concentrated from June to August, which brings 57% of the annual total; August by itself averages 406 mm.
Forecast highs for the coming week average 33 °C, 2 °C warmer than a normal October (31 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
29 °C
17 °C
12 mm
Feb
32 °C
19 °C
16 mm
Mar
33 °C
22 °C
36 mm
Apr
35 °C
25 °C
75 mm
May
33 °C
26 °C
263 mm
Jun
32 °C
26 °C
315 mm
Jul
32 °C
26 °C
375 mm
Aug
31 °C
25 °C
406 mm
Sep
32 °C
25 °C
300 mm
Oct
31 °C
24 °C
102 mm
Nov
30 °C
21 °C
22 mm
Dec
29 °C
18 °C
9 mm
Whole year
32 °C
23 °C
1,930 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 17.97° N, 102.60° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Vientiane: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.58µg/m³
PM108µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Vientiane
Rain observed over the last two hours by official weather radars around Vientiane, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Vientiane yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Vientiane
Waning gibbous
79 % illuminated · 19.3 days
Rise 20:21 Set 09:13
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Wed11/113%
Moonrise and moonset in local time (Asia/Vientiane); phase and lit fraction from a synodic calculation.
Look up a past day in Vientiane
Curious about the weather in Vientiane on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Vientiane weather at a glance
This page gathers everything about the weather in Vientiane, Vientiane Prefecture: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “mainly clear”, it is 23 °C (feels like 30 °C) and the wind blows at 4 km/h.
Expected range today: 23 °C to 33 °C and around 2 mm of rain; keep an eye on thunderstorms; it will be very hot. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Vientiane weather data for developers
Use the Vientiane forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
