September weather forecast
Thimphu, Bhutan

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.