Siem Reap in Summer — Weather & What to Expect
Summer in Siem Reap (June, July, August) averages daytime highs of 32.1°C and lows of 25.3°C, with around 668.6mm of rain across the season (74 rainy days in total). It includes some of the best months of the year to visit (June, July, August).
In the northern hemisphere, summer in Siem Reap covers June, July, August.
Summer in Siem Reap month by month
| Month | High | Low | Rain | Rainy days | Rating |
|---|---|---|---|---|---|
| June | 32.9°C | 25.5°C | 162.3mm | 22 | 9/10 |
| July | 31.7°C | 25.2°C | 268.7mm | 26 | 8/10 |
| August | 31.7°C | 25.1°C | 237.6mm | 26 | 8/10 |
What to pack for Siem Reap in summer
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Frequently Asked Questions
Is summer a good time to visit Siem Reap?
Summer in Siem Reap rates around 8/10 — good time to visit. Average highs are 32.1°C with 668.6mm of rain across the season.
How hot is Siem Reap in summer?
Daytime highs average 32.1°C (89.8°F) across June, July, August, with nights around 25.3°C.
What months are summer in Siem Reap?
Siem Reap is in the northern hemisphere, so summer covers June, July, August.
See also: best time to visit Siem Reap · Siem Reap annual climate · Siem Reap in spring · Siem Reap in autumn · Siem Reap in winter
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Once you know what summer in Siem Reap looks like, find out exactly what to pack for Siem Reap at 247PackingList. For currency, language and country facts, see the Cambodia guide at 247CountryInfo.
Summer in Siem Reap — what to pack
Lightweight travel clothing
Lightweight, breathable clothing and a compact travel umbrella are essential in this climate.
Check Price →Check clothing sizes in Cambodia at 247Sizing before you shop.
More summer travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.