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 to 23.1°C. 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

Thimphu transitions into September recording an average high-temperature of a still moderately hot 23.1°C, closely aligning with the preceding month's temperature. The low-temperature averages to a mild 15°C during the nights of September.

Rainfall

In Thimphu, in September, during 14 rainfall days, 155mm of precipitation is typically accumulated. In Thimphu, during the entire year, the rain falls for 97 days and collects up to 1447mm of precipitation.

Daylight

The average length of the day in September in Thimphu is 12h and 19min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:23. On the last day of September, in Thimphu, sunrise is at 05:53 and sunset at 17:49 +06.

Sunshine

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

UV index

April through September, with an average maximum UV index of 12, are months with the highest UV index in Thimphu. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 12 in September translates into the following recommendations:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.