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. 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

September's arrival in Krong Siem Reap brings an average high-temperature of a still tropical 31°C, demonstrating subtle variation from the preceding month. During September, an average low-temperature of 24°C is observed.

Rainfall

The month with the most rainfall in Krong Siem Reap, Cambodia, is September, when the rain falls for 18 days and typically aggregates up to 250mm of precipitation.

Daylight

The average length of the day in September in Krong Siem Reap is 12h and 13min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:16. 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 unsafe exposure to UV radiation for the average person.
Note: The UV index of 12 in September translates into these instructions:
Utilize all vital precautions. Guarding against sun harm is non-negotiable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise.