September weather forecast and climate
Taipei, Taiwan

Cloudy skies above the city of Taipei in Taiwan, with a bird
Cloudy skies above the city of Taipei in Taiwan, with a bird's eye view of the National Taiwan University buildings
September is the wettest month of the year in Taipei as the rain gauge accumulates 360.7mm (14.2"). The summer heat shows no sign of subsiding as the average temperatures remain in the 25°C (77°F) to 31.1°C (88°F) zone. The temperatures may climb up to 35°C (95°F) during an unusually hot year.
The skies are mostly cloudy, and the average humidity is 75%. Storms are frequent and hardly surprise the local population. September offers 5 hours of daily sunshine, and budget travelers may find significant discounts during the off-season.

What is the temperature in September in Taipei?

The average high-temperature, in September, is 31.1°C (88°F), while the average low-temperature is 24.8°C (76.6°F).
Average temperature in September - Taipei, Taiwan
  • Average high temperature in September: 31.1°C

The warmest month (with the highest average high temperature) is July (34.3°C).
The month with the lowest average high temperature is January (19.1°C).

  • Average low temperature in September: 24.8°C

The month with the highest average low temperature is July (26.3°C).
The coldest month (with the lowest average low temperature) is January (13.9°C).

Average humidity in September - Taipei, Taiwan
  • Average humidity in September: 75.8%

The month with the highest relative humidity is February (80.6%).
The month with the lowest relative humidity is July (73%).

Average rainfall in September - Taipei, Taiwan
  • Average rainfall in September: 360.5mm

The wettest month (with the highest rainfall) is September (360.5mm).
The driest month (with the lowest rainfall) is December (73.3mm).

Average rainfall days in September - Taipei, Taiwan
  • Average rainfall days in September: 13.8 days

Months with the highest number of rainy days are March and June (15.5 days).
The month with the lowest number of rainy days is December (11.7 days).

Average daylight in September / Average sunshine in September - Taipei, Taiwan
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in September: 5.1h

The month with most sunshine is August (Average sunshine: 6.1h).
The month with least sunshine is February (Average sunshine: 2.5h).

Average UV index in September - Taipei, Taiwan
  • Average UV index in September: 10

Months with the highest UV index are May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 6).

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