August · Laos
Best time to visit Si Phan Don in August Weather, crowds & prices
Weather in Si Phan Don in August
Average temperature 28°C, 350 mm of rain, about 9 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
3.5/10
Ranked #12 of 12 months
- Avg temp
- 28°C
- Rainfall
- 350 mm
- Humidity
- 82%
- Days with 6h+ sun
- 9
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
August in Si Phan Don scores 3.5/10 for nature and wildlife travel - ranked #12 of 12. Expect around 28°C, 350 mm of rain, and roughly 9 days with 6+ hours of sunshine this month.
A tranquil archipelago of river islands on the Mekong in southern Laos, perfect during the dry season.
August in Si Phan Don — off-season conditions
August averages 28°C (82°F) and humidity near 82%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
350 mm of rain puts this in monsoon territory — about 9 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 3.5/10 here, 12th of 12 months, against 9.6/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? January scores 6.1 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Si Phan Don in August?
- In August, Si Phan Don averages 28°C, 350 mm of rain, and about 9 days with 6+ hours of sunshine. Its climate-comfort score is 3.5/10.
- Is August a good time to visit Si Phan Don?
- August earns a 3.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Si Phan Don in August?
- Expect about 350 mm of rain in August. Average humidity is 82% and there are about 9 days with 6+ hours of sunshine.
Curated in Si Phan Don
Tickets & experiences
Things to do in Si Phan Don
Si Phan Don, Laos. Live activities and tours from GetYourGuide, matched to this destination.