September weather forecast
Taiwan

September in Taiwan marks the transition from the hot summer months to the cooler autumn period. The northern regions, including Taipei, experience temperatures between 24°C (75.2°F) and 33°C (91.4°F). The monsoon season's residual influence results in noticeable rainfall, with average monthly precipitation around 150mm (5.91"). The frequency of sunny periods increases, offering warmer and drier days interspersed with showers.

In central and southern Taiwan, temperatures generally vary from 26°C (78.8°F) to 33°C (91.4°F). Cities like Kaohsiung and Tainan continue to be warmer, often reaching the upper limit of this temperature range. Rainfall in these regions decreases, aligning with the overall reduction in monsoon activity. However, the continuing typhoon season can still bring bouts of severe weather, especially in the southern part of the island.

When compared to August, September experiences a decrease in both temperature and rainfall as the summer heat starts to recede and the influence of the monsoon continues to diminish. As the island transitions into October, the following month, Taiwan further experiences cooler temperatures and decreased rainfall, truly embracing the arrival of the autumn season. The typhoon season, however, can extend into October, potentially affecting the overall weather conditions.

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• Taipei - September »
  In Taipei during September, the rain falls for 13.8 days and regularly aggregates up to 361mm (14.21") of precipitation. On the last day of September, in Taipei sunrise is at 05:45 and sunset at 17:42 CST.
• Taichung - September »
  In Taichung during September, the rain falls for 8.2 days and regularly aggregates up to 98mm (3.86") of precipitation. With the decrease in rainfall and a mild reduction in temperatures, September sets the perfect stage for those seeking to explore Taichung's outdoor scenic views.
• Tainan - September »
  In Tainan during September, the rain falls for 9.5 days and regularly aggregates up to 178mm (7.01") of precipitation. In Tainan in September, it is raining for 9.5 days, with typically 178mm (7.01") of accumulated precipitation.
• Penghu - September »
  In Penghu during September, the rain falls for 12 days and regularly aggregates up to 137mm (5.39") of precipitation. In Penghu, during September, the rain falls for 12 days and regularly aggregates up to 137mm (5.39") of precipitation.
• Sun Moon Lake - September »
  In Sun Moon Lake during September, the rain falls for 17 days and regularly aggregates up to 201mm (7.91") of precipitation. On the first day of September in Sun Moon Lake, sunrise is at 05:37 and sunset at 18:15.
• Kaohsiung City - September »
  In Kaohsiung City in September, during 11.2 rainfall days, 242mm (9.53") of precipitation is typically accumulated. On the first day of September in Kaohsiung City sunrise is at 05:41 and sunset at 18:16.
• Alishan Township - September »
  On the first day of September in Alishan Township sunrise is at 05:38 and sunset at 18:15. In Alishan Township, in September, during 18 rainfall days, 233mm (9.17") of precipitation is typically accumulated.
• Hualien County - September »
  On the first day of September in Hualien County, sunrise is at 05:34 and sunset at 18:12. In Hualien County, in September, it is raining for 17 days, with typically 344mm (13.54") of accumulated precipitation.
• Orchid Island - September »
  The months with the warmest seawater in Orchid Island are June through September, with an average sea temperature of 29°C (84.2°F). In Orchid Island in September, it is raining for 20 days, with typically 384mm (15.12") of accumulated precipitation.
• Hsinchu City - September »
  September is the least humid month in Hsinchu City with an average relative humidity of 75.1%. In Hsinchu City during September, the rain falls for 6.8 days and regularly aggregates up to 95mm (3.74") of precipitation.
• Taitung City - September »
  On the last day of September, in Taitung City sunrise is at 05:46 and sunset at 17:44 CST. In Taitung City, Taiwan, in September, the average water temperature is 28.5°C (83.3°F).