September weather forecast
Krong Siem Reap, Cambodia

September stands as the wettest month, climatologically, in Krong Siem Reap. Presented as a continuation of August's trend, September's weather characteristics include similar temperature ranges. However, one striking difference is in precipitation, with rainfall reaching a yearly high of 250mm (9.84"). This solidifies the month's position at the peak of the rainy season. September's rainy afternoons make it ideal for those with a preference for dramatic weather, and the need for sun protection remains high due to maintained UV radiation levels.

Temperature

Krong Siem Reap's shift into September is marked by a subtle change to a still tropical 31°C (87.8°F) from August's 32°C (89.6°F) in temperature. Krong Siem Reap encounters a steady low-temperature average of 24°C (75.2°F) throughout the month of September.

Rainfall

The month with the most rainfall is September, when the rain falls for 18 days and typically aggregates up to 250mm (9.84") of precipitation.

Daylight

In September, the average length of the day in Krong Siem Reap is 12h and 13min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:15. On the last day of September, sunrise is at 05:53 and sunset at 17:55 +07.

Sunshine

The months with the least sunshine are August and September, with an average of 5h of sunshine.

UV index

The months with the highest UV index in Krong Siem Reap are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 12 in September converts into the following recommendations:
Execute every important safeguard, as unprotected skin and eyes could burn within moments. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise.