August · Cambodia
Best time to visit Phnom Penh in August Weather, crowds & prices
Weather in Phnom Penh in August
Average temperature 28°C, 246 mm of rain, about 29 days with 6+ hours of sunshine and 83% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
3.3/10
Ranked #11 of 12 months
- Avg temp
- 28°C
- Rainfall
- 246 mm
- Humidity
- 83%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $ · Budget Friendly ($)
August in Phnom Penh scores 3.3/10 for sightseeing and cultural travel - ranked #11 of 12. Expect around 28°C, 246 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Phnom Penh pairs royal palaces and a riverfront with sobering museums of the Khmer Rouge years.
August in Phnom Penh — off-season conditions
August averages 28°C (82°F) and humidity near 83%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
246 mm makes this the wettest stretch of the year, though about 29 days with 6+ hours of sunshine still appear — keep an indoor fallback ready.
It scores 3.3/10 here, 11th of 12 months, against 8.1/10 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.
Plan for low-season pricing, with crowds are moderate.
Flexible dates? January scores 4.8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Phnom Penh in August?
- In August, Phnom Penh averages 28°C, 246 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 3.3/10.
- Is August a good time to visit Phnom Penh?
- August earns a 3.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Phnom Penh in August?
- Expect about 246 mm of rain in August. Average humidity is 83% and there are about 29 days with 6+ hours of sunshine.
Curated in Phnom Penh
Tickets & experiences
Things to do in Phnom Penh
Phnom Penh, Cambodia. Live activities and tours from GetYourGuide, matched to this destination.