Siem Reap in October
In October, Siem Reap averages 31°C (88°F) during the day and 24°C (75°F) at night, with frequent rain — about 15 days of the month see precipitation (260 mm total).
ShoulderConditions are warm and beach-friendly. Plan for unsettled weather and bring rain gear.
October is one of the wetter and less comfortable months in Siem Reap. If your dates are flexible, consider a different time of year.
How October compares to the rest of the year in Siem Reap
October is one of the coolest months in Siem Reap (10th of 12) and moderately rainy compared to the rest of the year (5th of 12). Daytime temperature runs 2°C below the annual average (33°C). October runs roughly the same as September (31°C) and stays flat into November.
October sunrise & sunset in Siem Reap
Times shown for Siem Reap local time (Asia/Phnom_Penh), calculated for the 15th of October. They shift by a few minutes day to day across the month.
Photography light in Siem Reap — October
Golden-hour and blue-hour windows for the 15th of October, in Siem Reap's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Siem Reap in October
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on October's tier (Shoulder) and Siem Reap's popularity.
Crowds & pricing — October in Siem Reap
Siem Reap is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — October in Siem Reap
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Siem Reap in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 32°C / 90°F | 20°C / 68°F | 5 mm | 1 | 0 |
| February | 33°C / 91°F | 21°C / 70°F | 5 mm | 1 | 0 |
| March | 35°C / 95°F | 23°C / 73°F | 30 mm | 3 | 0 |
| April | 35°C / 95°F | 25°C / 77°F | 90 mm | 7 | 0 |
| May | 34°C / 93°F | 25°C / 77°F | 170 mm | 11 | 0 |
| June | 33°C / 91°F | 25°C / 77°F | 210 mm | 15 | 0 |
| July | 32°C / 90°F | 25°C / 77°F | 200 mm | 16 | 0 |
| August | 32°C / 90°F | 25°C / 77°F | 230 mm | 18 | 0 |
| September | 31°C / 88°F | 25°C / 77°F | 275 mm | 18 | 0 |
| October | 31°C / 88°F | 24°C / 75°F | 260 mm | 15 | 0 |
| November | 31°C / 88°F | 23°C / 73°F | 135 mm | 9 | 0 |
| December | 31°C / 88°F | 21°C / 70°F | 30 mm | 3 | 0 |
Other cities with similar October weather
🌍 See the full ranked list of climate twins for Siem Reap in October →
Frequently asked questions
How hot is Siem Reap in October?
In October, Siem Reap averages a high of 31°C (88°F) and a low of 24°C (75°F) — generally hot.
Does it rain a lot in Siem Reap in October?
October is quite rainy in Siem Reap, with about 15 rainy days on average.
Is October a good time to visit Siem Reap?
October is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Siem Reap in October?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full October packing list for Siem Reap for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.