Swimming in Taiwan in september 2025 Sea temperature by city in september
Do you want to go to the beach in Taiwan in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Taiwan by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Taiwan in september 2025
Here, find the average sea temperature in Taiwan in september in several coastal cities.
Northern Taiwan in september
82°F
min: 79°F / max: 85°F
82°F
min: 79°F / max: 85°F
82°F
min: 79°F / max: 85°F
Eastern taiwan in september
83°F
min: 81°F / max: 86°F
84°F
min: 82°F / max: 86°F
82°F
min: 79°F / max: 85°F
Green Island (Lutao)
84°F
min: 82°F / max: 86°F
Jiaoxi
82°F
min: 79°F / max: 85°F
Lanyu
84°F
min: 82°F / max: 86°F
Southwest Taiwan in september
84°F
min: 83°F / max: 86°F
84°F
min: 83°F / max: 86°F
84°F
min: 83°F / max: 86°F
Chiayi
84°F
min: 83°F / max: 86°F
Northwest Taiwan in september
82°F
min: 79°F / max: 85°F
82°F
min: 79°F / max: 85°F
82°F
min: 79°F / max: 85°F
Sanyi
82°F
min: 79°F / max: 85°F
Where should you go swimming in Taiwan in the month of september?
Swimming in Taiwan in september is ideal
In september in Taiwan swimming conditions are generally the same everywhere.
In september in Taipei, Hualien, Kaohsiung, Hsinchu, Keelung, Miaoli, Kenting National Park, Yangmingshan National Park, Taichung, Tainan, Taitung, Yilan, Chiayi, Green Island (Lutao), Jiaoxi, Lanyu and Sanyi, swimming conditions are perfect! With water reaching a maximum of 85°F and an average of 82°F, going in the water (and staying there!) feels great.
Where to go swimming in Taiwan in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Taipei
| September | |||
| Average sea temperature | 82°F | ||
| Minimum sea temperature | 79°F | ||
| Maximum sea temperature | 85°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 7.6in | ||
| Number of days of precipitation | 7 jour(s) (23%) | ||
| Cloud cover | 37% | ||
| Our opinion | ideal swimming |
More information on swimming in Taipei in september
Hualien
| September | |||
| Average sea temperature | 83°F | ||
| Minimum sea temperature | 81°F | ||
| Maximum sea temperature | 86°F | ||
| Average outside temperature | 83°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 79°F | ||
| Precipitation | 8.4in | ||
| Number of days of precipitation | 10 jour(s) (32%) | ||
| Cloud cover | 34% | ||
| Our opinion | ideal swimming |
More information on swimming in Hualien City in september
Kaohsiung
| September | |||
| Average sea temperature | 84°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 86°F | ||
| Average outside temperature | 86°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 85°F | ||
| Precipitation | 10.3in | ||
| Number of days of precipitation | 9 jour(s) (31%) | ||
| Cloud cover | 30% | ||
| Our opinion | ideal swimming |
More information on swimming in Kaohsiung in september
Hsinchu
| September | |||
| Average sea temperature | 82°F | ||
| Minimum sea temperature | 79°F | ||
| Maximum sea temperature | 85°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 86°F | ||
| Minimum outside temperature | 83°F | ||
| Precipitation | 7.6in | ||
| Number of days of precipitation | 10 jour(s) (33%) | ||
| Cloud cover | 26% | ||
| Our opinion | ideal swimming |
More information on swimming in Hsinchu in september
Keelung
| September | |||
| Average sea temperature | 82°F | ||
| Minimum sea temperature | 79°F | ||
| Maximum sea temperature | 85°F | ||
| Average outside temperature | 83°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 9.7in | ||
| Number of days of precipitation | 10 jour(s) (33%) | ||
| Cloud cover | 37% | ||
| Our opinion | ideal swimming |
More information on swimming in Keelung in september
List of coastal cities in Taiwan
| Taipei in september | ideal swimming |
| Hualien in september | ideal swimming |
| Kaohsiung in september | ideal swimming |
| Hsinchu in september | ideal swimming |
| Keelung in september | ideal swimming |
| Miaoli in september | ideal swimming |
| Kenting National Park in september | ideal swimming |
| Yangmingshan National Park in september | ideal swimming |
| Taichung in september | ideal swimming |
| Tainan in september | ideal swimming |
| Taitung in september | ideal swimming |
| Yilan in september | ideal swimming |
| Chiayi in september | ideal swimming |
| Green Island (Lutao) in september | ideal swimming |
| Jiaoxi in september | ideal swimming |
| Lanyu in september | ideal swimming |
| Sanyi in september | ideal swimming |