Siem Reap in Autumn — Weather & What to Expect
Autumn in Siem Reap (September, October, November) averages daytime highs of 30.2°C and lows of 23.5°C, with around 837.9mm of rain across the season (67 rainy days in total). It includes some of the best months of the year to visit (September, October, November).
In the northern hemisphere, autumn in Siem Reap covers September, October, November.
Autumn in Siem Reap month by month
| Month | High | Low | Rain | Rainy days | Rating |
|---|---|---|---|---|---|
| September | 30.3°C | 24.3°C | 396.0mm | 29 | 8/10 |
| October | 30.0°C | 23.4°C | 309.8mm | 24 | 8/10 |
| November | 30.2°C | 22.8°C | 132.1mm | 14 | 9/10 |
What to pack for Siem Reap in autumn
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
Frequently Asked Questions
Is autumn a good time to visit Siem Reap?
Autumn in Siem Reap rates around 8/10 — good time to visit. Average highs are 30.2°C with 837.9mm of rain across the season.
How hot is Siem Reap in autumn?
Daytime highs average 30.2°C (86.4°F) across September, October, November, with nights around 23.5°C.
What months are autumn in Siem Reap?
Siem Reap is in the northern hemisphere, so autumn covers September, October, November.
See also: best time to visit Siem Reap · Siem Reap annual climate · Siem Reap in spring · Siem Reap in summer · Siem Reap in winter
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Once you know what autumn 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.
Autumn 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 autumn 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.