September weather forecast
Phonsavan, Laos

September

Weather in September

With the beginning of fall, September in Phonsavan witnesses a departure from the extreme weather conditions of the summer months. The temperatures remain consistent with the year's pattern but rainfall shows a significant decline, indicating the departure of the monsoon. However, the presence of substantial daylight hours provides ample scope for outdoor activities. As the city adjusts to the transitioning phase, September provides a serene ambiance to thrill adventure seekers.

Temperature

Phonsavan's September showcases an average high-temperature of a still moderately hot 26.6°C (79.9°F), hardly distinct from August's 26.5°C (79.7°F). During September, Phonsavan's temperature falls to a steady low-temperature average of 17.8°C (64°F).

Rainfall

In Phonsavan, in September, it is raining for 16 days, with typically 158mm (6.22") of accumulated precipitation. In Phonsavan, Laos, during the entire year, the rain falls for 136 days and collects up to 1444mm (56.85") of precipitation.

Daylight

In September, the average length of the day is 12h and 15min.
On the first day of September, sunrise is at 05:52 and sunset at 18:22. On the last day of the month, sunrise is at 05:57 and sunset at 17:56 +07.

Frequently asked questions

What is the temperature in September?
An average high-temperature, in September, in Phonsavan, is 26.6°C (79.9°F) and the average low-temperature is 17.8°C (64°F).
How many days does it rain in September?
In Phonsavan, in September, it is raining for 16 days, with typically 158mm (6.22") of accumulated precipitation.
How many hours of daylight does Phonsavan have in September?
The average day length in September is 12h and 15min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:52 and sunset at 18:22. On the last day of the month, sunrise is at 05:57 and sunset at 17:56 +07.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average daylight
Average temperature in September
Phonsavan, Laos
  • Average high temperature in September: 26.6°C

The warmest month (with the highest average high temperature) is April (28.7°C).
The month with the lowest average high temperature is December (21.7°C).

  • Average low temperature in September: 17.8°C

The month with the highest average low temperature is June (20°C).
The coldest month (with the lowest average low temperature) is December (7.8°C).

Average rainfall in September
Phonsavan, Laos
  • Average rainfall in September: 158.2mm

The wettest month (with the highest rainfall) is August (300.9mm).
The driest month (with the least rainfall) is December (8.4mm).

Average rainfall days in September
Phonsavan, Laos
  • Average rainfall days in September: 16 days

The months with the highest number of rainy days are July and August (22 days).
The months with the least rainy days are January and December (2 days).

Average daylight in September
Phonsavan, Laos
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

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