🔎 Weather for a date or period
Actual day-by-day weather for the selected period (ERA5). Up to 1 year.
📆 On this day before
Data for previous years is being prepared.
🏆 Hottest and coldest day in Vientiane (over the full observation series)
+42°
Hottest day
May 7, 2023
+8°
Coldest day
January 17, 1967
🗓 Monthly climate in Vientiane
| Month | Day | Night | Precip |
|---|---|---|---|
| January | +27° | +18° | 18 mm |
| February | +29° | +19° | 16 mm |
| March | +32° | +23° | 48 mm |
| April | +34° | +25° | 61 mm |
| May | +33° | +25° | 213 mm |
| June | +31° | +25° | 273 mm |
| July | +31° | +25° | 371 mm |
| August | +30° | +25° | 428 mm |
| September | +30° | +24° | 352 mm |
| October | +30° | +23° | 137 mm |
| November | +30° | +21° | 27 mm |
| December | +27° | +18° | 5 mm |
🕰 Weather in Vientiane August 18 in past years
+34°
Heat record · 2023
+23°
Cold record · 1969
📜
This day in history. The hottest August 18 in Vientiane was in 2023 (+34°), the coldest in 1969 (+23°). 86 years of observations. Normal for August: day +30°, night +25°.
📒 For school and home
Weather diary
ready-made observation table for a month — for school
Weather for the month
August calendar: forecast + climate normal
Air quality
AQI 37 — good
FAQ about the weather archive in Vientiane ❓
What was the weather in Vientiane on a specific date?
Pick a date or range in the form above — we show actual day-by-day weather (ERA5 reanalysis, up to a year back). For today’s date in past years see “On this day before”.
Hottest and coldest day in the history in Vientiane?
Heat record — +42° (May 7, 2023), cold record — +8° (January 17, 1967). Observations over the full available series.
What's the typical weather in Vientiane in August?
On average +30° by day, +25° at night, precipitation about 428 mm (ERA5 climate normal).
Since what year is the weather archive in Vientiane kept?
Climate normals and records come from the ERA5 reanalysis. Actual day-by-day weather is available for the last year.
Climate and weather archive in Vientiane
Monthly climate normals in Vientiane (average day and night temperatures, precipitation) are computed from the ERA5 reanalysis. The observation archive accrues from launch. Data: Open-Meteo (ERA5).