Weather in September
The waning summer heat in September quietly prepares Keelung City for the fall. A noted decrease in sea temperature to 26.2°C (79.2°F) becomes apparent this month. Following August, shorter daylight hours hint at the upcoming fall season. The moderate weather, combined with less rainfall, makes this month ideal for outdoor ventures. People begin to embrace the subtle cold, bidding goodbye to the warmer days.
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
On the first day of the month, sunrise is at 05:33 and sunset at 18:12. On the last day of September, sunrise is at 05:44 and sunset at 17:41 CST.
Sea temperature
In Keelung City, the average seawater temperature in September is 27.7°C (81.9°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
Daylight
In Keelung City, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 05:33 and sunset at 18:12. On the last day of September, sunrise is at 05:44 and sunset at 17:41 CST.
Updated: Jun 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the sea water temperature in September?
In September, the average sea temperature is 27.7°C (81.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
What is the average length of the day in September?
In September, the average day length is 12h and 18min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:33 and sunset at 18:12. On the last day of the month, sunrise is at 05:44 and sunset at 17:41 CST.
Average sea temperature in September
Keelung City, Taiwan
- Average sea temperature in September: 27.7°C
The best month for swimming (with the highest average sea temperature) is August (28.6°C).
The coldest month (with the lowest average sea temperature) is February (20.3°C).
Average daylight in September
Keelung City, Taiwan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
Keelung City, Taiwan
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location