September weather forecast
Krong Siem Reap, Cambodia

The small ancient Hindu Temple, Baksei Chamkrong, surrounded by trees in Krong Siem Reap, Cambodia
The small ancient Hindu Temple, Baksei Chamkrong, surrounded by trees in Krong Siem Reap, Cambodia

Weather in September

September, the first month of the autumn in Krong Siem Reap, is still a hot month, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 24°C (75.2°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still tropical 31°C (87.8°F). In September, in Krong Siem Reap, the average low-temperature is 24°C (75.2°F).

Rainfall

September is the month with the most rainfall in Krong Siem Reap. Rain falls for 18 days and accumulates 250mm (9.84") of precipitation.

Daylight

In September, the average length of the day 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 value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.
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FAQ

What is the wettest month in Krong Siem Reap?

September is the month with the most rainfall in Krong Siem Reap, Cambodia. Rain falls for 18 days and accumulates 250mm (9.84") of precipitation.

How many days does it rain in September in Krong Siem Reap?

In Krong Siem Reap, Cambodia, in September, during 18 rainfall days, 250mm (9.84") of precipitation is typically accumulated.

What is the average length of the day in September in Krong Siem Reap?

In September, the average day length in Krong Siem Reap is 12h and 13min.

When is the sunrise / sunset in September in Krong Siem Reap?

On the first day of September in Krong Siem Reap, Cambodia, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:53 and sunset at 17:55 +07.

What is the month with the least sunshine in Krong Siem Reap?

August and September, with an average of 5h of sunshine, are months with the least sunshine in Krong Siem Reap.

How many hours of sunshine does Krong Siem Reap have in September?

In September, the average sunshine duration in Krong Siem Reap is 5h.

What are the months with the highest UV index in Krong Siem Reap?

February through September, with an average maximum UV index of 12, are months with the highest UV index in Krong Siem Reap, Cambodia.

How high is the UV index in September in Krong Siem Reap?

In September, the average daily maximum UV index is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from exposure to the Sun's UV radiation.

Average temperature in September
Krong Siem Reap, Cambodia

Average temperature in September - Krong Siem Reap, Cambodia
  • Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are March and April (36°C).
The month with the lowest average high temperature is December (30°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is May (25°C).
The coldest month (with the lowest average low temperature) is January (19°C).

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Average rainfall in September
Krong Siem Reap, Cambodia

Average rainfall in September - Krong Siem Reap, Cambodia
  • Average rainfall in September: 250mm

The wettest month (with the highest rainfall) is September (250mm).
The driest month (with the least rainfall) is January (1mm).

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Average rainfall days in September
Krong Siem Reap, Cambodia

Average rainfall days in September - Krong Siem Reap, Cambodia
  • Average rainfall days in September: 18 days

The months with the highest number of rainy days are July, August and September (18 days).
The month with the least rainy days is January (1 days).

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Average daylight in September /
Average sunshine in September
Krong Siem Reap, Cambodia

Average daylight in September / Average sunshine in September - Krong Siem Reap, Cambodia
  • Average daylight in September: 12h and 13min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 22min).

  • Average sunshine in September: 5h

The months with the most sunshine are January, February and December (Average sunshine: 9h).
The months with the least sunshine are August and September (Average sunshine: 5).

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Average UV index in September
Krong Siem Reap, Cambodia

Average UV index in September - Krong Siem Reap, Cambodia
  • Average UV index in September: 12

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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