Siem Reap Weather in August
In Siem Reap, August brings very high daytime temperatures around 33°C (91°F), with nights cooling to 26°C (79°F). This month falls within the rainy season, so expect frequent rainfall.
Rainfall in Siem Reap in August
Siem Reap is in the rainy season in August, with rain on around 18 days and an average of 196 mm (7.7 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.
Temperature in Siem Reap in August
August in Siem Reap brings very high temperatures, with highs of 33°C (91°F) and nights around 26°C (79°F). For most visitors, the main thing to prepare for is the heat during the day. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.Our weather planner can help you find worldwide destinations with pleasant weather during this period. December typically offers the best weather for Siem Reap.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Siem Reap's climate page.
Siem Reap Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
33°C (91°F)
Chance of Rain
60%
Precipitation
196 mm (7.7 in)
Rainy days
18 days
Humidity
73%
Historical weather for Siem Reap in August
Browse day-by-day weather records for Siem Reap spanning 34 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siem Reap historical weather extremes in August
Based on 19 years of weather observations (2006-2025), these are the most extreme conditions recorded in Siem Reap.
- Siem Reap recorded its highest August temperature of 36°C (97°F) on August 8, 2021.
- The lowest daytime temperature in August was 26°C (79°F), recorded on August 8, 2022.
- The coldest night in August in Siem Reap was on August 28, 2021, with a minimum of 23°C (73°F).
- Peak precipitation in August occurred on August 20, 2010, when 31 mm (1.2 in) of precipitation was measured.
Best Places in Cambodia in August
Find out more about the weather in Cambodia and which places have the best travel conditions in this month. See all of Cambodia in August →
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What to Wear in Siem Reap in August
Pack for serious heat in Siem Reap in August. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Siem Reap in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Cambodia, check out our Siem Reap's climate page.
See the full Siem Reap climate overview or explore weather in Cambodia.
