The weather in Siem Reap in October is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of October in Siem Reap.
Siem Reap should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Siem Reap in October 2025.
If you’re planning to visit Siem Reap in the near future, we highly recommend that you review the 14 day weather forecast for Siem Reap before you arrive.
Temperatures
31° / 24°
Rainy Days
16
Snowy Days
0
Dry Days
15
Rainfall
487
mm
Sun Hours
10.4
Hrs
