September weather forecastThimphu, Bhutan

Mountain peaks and slopes in the Valley country of Thimphu, Bhutan Mountain peaks and slopes in the Valley country of Thimphu, Bhutan

September

Weather in September

Transitioning from the monsoon-laden summer, Thimphu weather in September experiences a decrease in rainfall. As the city moves towards autumn, the temperatures also begin to cool down, ranging from 15°C (59°F) to 23.1°C (73.6°F). The skies showcase an expanding palette of colors during sunset, casting an irreplaceable charm over the cityscape. Easing off from a wet summer, September ensures an elegant transition into Thimphu's delightful fall season.

Temperature

September's arrival registers an average high-temperature of a still moderately hot 23.1°C (73.6°F), closely aligning with the temperature of the previous month. Thimphu records a consistent low-temperature of 15°C (59°F) during September nights.

Rainfall

In Thimphu, in September, it is raining for 14 days, with typically 155mm (6.1") of accumulated precipitation. Throughout the year, in Thimphu, there are 97 rainfall days, and 1447mm (56.97") of precipitation is accumulated.

Daylight

In Thimphu, Bhutan, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:22. On the last day of September, in Thimphu, sunrise is at 05:53 and sunset at 17:48 +06.

Sunshine

July through September, with an average of 5h of sunshine, are months with the least sunshine in Thimphu.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 12 during September translates into the following directions:
Adopt all important safety measures, unprotected skin may burn rapidly. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

An average high-temperature, in September, in Thimphu, is 23.1°C (73.6°F) and the average low-temperature is 15°C (59°F).

In Thimphu, Bhutan, during September, the rain falls for 14 days and regularly aggregates up to 155mm (6.1") of precipitation.

In Thimphu, the average day length in September is 12h and 19min.

In September, on the first day of the month, sunrise is at 05:40 and sunset at 18:22. On the last day of the month, in Thimphu, sunrise is at 05:53 and sunset at 17:48 +06.

The months with the least sunshine in Thimphu are July through September, with an average of 5h of sunshine.

In September, the average sunshine duration in Thimphu, Bhutan, is 5h.

April through September, with an average maximum UV index of 12, are months with the highest UV index.

In September, the average daily maximum UV index in Thimphu, Bhutan, is 12. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Thimphu, Bhutan

  • Average high temperature in September: 23.1°C

The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (12.3°C).

  • Average low temperature in September: 15°C

The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is January (-2.6°C).

Average rainfall in September
Thimphu, Bhutan

  • Average rainfall in September: 155mm

The wettest month (with the highest rainfall) is July (373mm).
The driest month (with the least rainfall) is November (8mm).

Average rainfall days in September
Thimphu, Bhutan

  • Average rainfall days in September: 14 days

The months with the highest number of rainy days are July and August (20 days).
The month with the least rainy days is December (0 days).

Average daylight in September /
Average sunshine in September
Thimphu, Bhutan

  • Average daylight in September: 12h and 18min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 5h

The months with the most sunshine are January, March, April and November (Average sunshine: 8h).
The months with the least sunshine are July, August and September (Average sunshine: 5h).

Average UV index in September
Thimphu, Bhutan

  • Average UV index in September: 12

The months with the highest UV index are April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 5).