Climate of Vientiane Prefecture, Laos
Area-weighted average across Vientiane Prefecture. For where people actually live and travel, see the cities below.
Vientiane Prefecture, a subdivision of Laos, has a mild oceanic climate on average. Area-weighted monthly temperatures across the whole territory range from 19.1°C / 66.4°F in December to 26.4°C / 79.5°F in June, with rainfall from 5 mm / 0.2 in to 429 mm / 16.9 in depending on the season (1955 mm / 77 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 19.2°C66.6°F | 5 mm0.2″ | Sunny & Mild |
| February | 20.8°C69.4°F | 16 mm0.6″ | Sunny & Warm, Sunny & Mild |
| March | 23.7°C74.7°F | 40 mm1.6″ | Sunny & Warm |
| April | 25.8°C78.4°F | 103 mm4.1″ | Tropical |
| May | 26.1°C79°F | 252 mm9.9″ | Tropical |
| June | 26.4°C79.5°F | 301 mm11.9″ | Tropical |
| July | 25.9°C78.6°F | 429 mm16.9″ | Tropical |
| August | 25.8°C78.4°F | 400 mm15.7″ | Tropical |
| September | 25.4°C77.7°F | 291 mm11.5″ | Tropical |
| October | 24.1°C75.4°F | 88 mm3.5″ | Tropical |
| November | 21.5°C70.7°F | 23 mm0.9″ | Sunny & Warm, Sunny & Mild |
| December | 19.1°C66.4°F | 7 mm0.3″ | Sunny & Mild |
Frequently asked questions
What is the best time to visit Vientiane Prefecture?
The best months to visit Vientiane Prefecture, Laos for sunny, dry weather are January, February, March, November, December. The warmest month is June at an area-wide average of 26.4°C / 79.5°F, and the driest is January with about 5 mm / 0.2 in of rainfall.
What is the climate of Vientiane Prefecture?
Vientiane Prefecture, Laos has area-weighted monthly average temperatures ranging from 19.1°C / 66.4°F in December to 26.4°C / 79.5°F in June. Annual rainfall averages about 1955 mm / 77 in, with the wettest month being July (429 mm / 16.9 in) and the driest January (5 mm / 0.2 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Vientiane Prefecture?
The hottest month in Vientiane Prefecture is June, with an area-wide average temperature of 26.4°C / 79.5°F.
What is the coldest month in Vientiane Prefecture?
The coldest month in Vientiane Prefecture is December, with an area-wide average temperature of 19.1°C / 66.4°F.
When does it rain most in Vientiane Prefecture?
The wettest month in Vientiane Prefecture is July, averaging about 429 mm / 16.9 in of rainfall. The driest is January with about 5 mm / 0.2 in.