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Best time to visit Laos

In Vientiane: December to January — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Vientiane.

Laos is not one climate. Each reference city below is answered on its own numbers.

Vientiane

  1. January: 27 °C by day, 17 °C at night, 11 mm of rain, recommended
  2. February: 30 °C by day, 19 °C at night, 13 mm of rain
  3. March: 32 °C by day, 22 °C at night, 36 mm of rain
  4. April: 34 °C by day, 24 °C at night, 74 mm of rain
  5. May: 32 °C by day, 25 °C at night, 242 mm of rain
  6. June: 31 °C by day, 25 °C at night, 307 mm of rain
  7. July: 30 °C by day, 24 °C at night, 379 mm of rain
  8. August: 30 °C by day, 24 °C at night, 410 mm of rain
  9. September: 30 °C by day, 24 °C at night, 327 mm of rain
  10. October: 30 °C by day, 23 °C at night, 107 mm of rain
  11. November: 29 °C by day, 21 °C at night, 23 mm of rain
  12. December: 27 °C by day, 17 °C at night, 5 mm of rain, recommended
Warmest
April, 34 °C
Coolest
January, 27 °C
Driest
December, 5 mm
Wettest
August, 410 mm

Luang Prabang

December to January — 18–27 °C by day. No other month of the twelve falls inside that band in Luang Prabang.

  1. January: 27 °C by day, 16 °C at night, 21 mm of rain, recommended
  2. February: 30 °C by day, 18 °C at night, 12 mm of rain
  3. March: 33 °C by day, 21 °C at night, 34 mm of rain
  4. April: 33 °C by day, 23 °C at night, 84 mm of rain
  5. May: 32 °C by day, 24 °C at night, 156 mm of rain
  6. June: 32 °C by day, 24 °C at night, 170 mm of rain
  7. July: 30 °C by day, 24 °C at night, 272 mm of rain
  8. August: 30 °C by day, 23 °C at night, 312 mm of rain
  9. September: 30 °C by day, 23 °C at night, 205 mm of rain
  10. October: 29 °C by day, 22 °C at night, 81 mm of rain
  11. November: 28 °C by day, 19 °C at night, 26 mm of rain
  12. December: 26 °C by day, 16 °C at night, 18 mm of rain, recommended
Warmest
March, 33 °C
Coolest
December, 26 °C
Driest
February, 12 mm
Wettest
August, 312 mm

How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.

Vientiane

Long-term averages for Vientiane: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).

DayNight
1520253035°C0500mmJanFebMarAprMayJunJulAugSepOctNovDecJanuary: Day 27 °C, Night 17 °C, Rain 11 mm. February: Day 30 °C, Night 19 °C, Rain 13 mm. March: Day 32 °C, Night 22 °C, Rain 36 mm. April: Day 34 °C, Night 24 °C, Rain 74 mm. May: Day 32 °C, Night 25 °C, Rain 242 mm. June: Day 31 °C, Night 25 °C, Rain 307 mm. July: Day 30 °C, Night 24 °C, Rain 379 mm. August: Day 30 °C, Night 24 °C, Rain 410 mm. September: Day 30 °C, Night 24 °C, Rain 327 mm. October: Day 30 °C, Night 23 °C, Rain 107 mm. November: Day 29 °C, Night 21 °C, Rain 23 mm. December: Day 27 °C, Night 17 °C, Rain 5 mm
Show the monthly table
Vientiane
MonthDay (°C)Night (°C)Rain (mm)
January271711
February301913
March322236
April342474
May3225242
June3125307
July3024379
August3024410
September3024327
October3023107
November292123
December27175

Luang Prabang

Long-term averages for Luang Prabang: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).

DayNight
1520253035°C0500mmJanFebMarAprMayJunJulAugSepOctNovDecJanuary: Day 27 °C, Night 16 °C, Rain 21 mm. February: Day 30 °C, Night 18 °C, Rain 12 mm. March: Day 33 °C, Night 21 °C, Rain 34 mm. April: Day 33 °C, Night 23 °C, Rain 84 mm. May: Day 32 °C, Night 24 °C, Rain 156 mm. June: Day 32 °C, Night 24 °C, Rain 170 mm. July: Day 30 °C, Night 24 °C, Rain 272 mm. August: Day 30 °C, Night 23 °C, Rain 312 mm. September: Day 30 °C, Night 23 °C, Rain 205 mm. October: Day 29 °C, Night 22 °C, Rain 81 mm. November: Day 28 °C, Night 19 °C, Rain 26 mm. December: Day 26 °C, Night 16 °C, Rain 18 mm
Show the monthly table
Luang Prabang
MonthDay (°C)Night (°C)Rain (mm)
January271621
February301812
March332134
April332384
May3224156
June3224170
July3024272
August3023312
September3023205
October292281
November281926
December261618

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