Vientiane weather by month & the best time to visit
Laos · city break · tropical — wet & dry seasons climate
The best time to visit Vientiane is January — its sunniest month (Sunshine Score 92/100), with December and February close behind. Vientiane averages about 2,437 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 8 mm of rain in January.
When is the best time to visit Vientiane?
For sunshine, the best time to visit Vientiane is January, then December and February. The dullest month is April (41/100, 61 mm of rain). The full month-by-month picture is in the table below.
How sunny is Vientiane?
Vientiane gets a moderate 2,437 hours of sunshine a year. 51 Sunshine Score points separate January (92) from April (41), so the month you pick matters. Vientiane is the sunniest of the 7 destinations tracked in Laos. Rain has a clear season: the wettest stretch, around August, carries about 54% of the annual 1,215 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 92 | 28° / 82°F | 15° / 59°F | 8 mm | 9 |
| February | 91 | 32° / 90°F | 18° / 64°F | 13 mm | 10 |
| March | 61 | 35° / 95°F | 22° / 72°F | 35 mm | 9 |
| April | 41 | 37° / 99°F | 25° / 77°F | 61 mm | 10 |
| May | 53 | 34° / 93°F | 25° / 77°F | 168 mm | 10 |
| June | 66 | 32° / 90°F | 24° / 75°F | 170 mm | 10 |
| July | 66 | 31° / 88°F | 24° / 75°F | 203 mm | 10 |
| August | 66 | 30° / 86°F | 24° / 75°F | 246 mm | 10 |
| September | 66 | 30° / 86°F | 23° / 73°F | 204 mm | 9 |
| October | 78 | 30° / 86°F | 21° / 70°F | 85 mm | 10 |
| November | 90 | 29° / 84°F | 18° / 64°F | 16 mm | 9 |
| December | 92 | 27° / 81°F | 15° / 59°F | 6 mm | 8 |
Nearest destinations
Head-to-head
How Vientiane compares month by month: Vientiane vs Khon Kaen · Vientiane vs Udon Thani · Vientiane vs Phitsanulok · all comparisons
Vientiane: questions and answers
What kind of destination is Vientiane?
Vientiane is a city break in Laos with a tropical — wet & dry seasons climate.
How many hours of sunshine does Vientiane get a year?
Vientiane gets about 2,437 hours of sunshine a year, at its best around January.
When is the best time to visit Vientiane?
The sunniest time to visit Vientiane is January, when the Sunshine Score peaks at 92/100 (with December and February close behind). Expect daytime highs around 28°C / 82°F.
What is the least sunny month in Vientiane?
April is the least sunny month in Vientiane, scoring 41/100 with about 61 mm of rain.
Is Vientiane the sunniest place in Laos?
Yes — with about 2,437 hours of sunshine a year, Vientiane has the most annual sunshine of the 7 Laos destinations tracked by Sunshine Atlas.
How strong is the sun in Vientiane?
The typical midday UV index in Vientiane peaks around 10 (very high) in February, easing to about 8 (very high) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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