Koh Dach Weather in September
September in Koh Dach brings very high temperatures, with daytime highs of 34°C (93°F) and nights around 26°C (79°F). It's also the wettest month of the year, so an umbrella is a must.
Rainfall in Koh Dach in September
Koh Dach is in the rainy season in September, with rain on around 19 days and an average of 262 mm (10 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Koh Dach in September
Daytime temperatures in Koh Dach reach 34°C (93°F) in September, dropping to 26°C (79°F) at night. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Koh Dach in September
The city usually sees around 129 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).
Wind Speed in Koh Dach in September
Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.Our weather planner can help you find worldwide destinations with pleasant weather during this period. December typically offers the best weather for Koh Dach.
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 Koh Dach's climate page.
Koh Dach Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
34°C (93°F)
Chance of Rain
64%
Precipitation
262 mm (10 in)
Rainy days
19 days
Humidity
84% *
Windspeed
2 m/s (4 knots) *
Sunshine
129 hours *
Percentage Sunshine
*
Historical weather for Koh Dach in September
Browse day-by-day weather records for Koh Dach spanning 38 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koh Dach historical weather extremes in September
Based on 20 years of weather observations (2005-2025), these are the most extreme conditions recorded in Koh Dach.
- Koh Dach recorded its highest September temperature of 39°C (102°F) on September 30, 2019.
- On September 22, 2025, Koh Dach saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The lowest overnight temperature recorded in September was 19°C (66°F) (September 14, 2022).
Best Places in Cambodia in September
Find out more about the weather in Cambodia and which places have the best travel conditions in this month. See all of Cambodia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Koh Dach in September
Pack for serious heat in Koh Dach in September. 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Koh Dach in September
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 Koh Dach's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Koh Dach climate overview or explore weather in Cambodia.
