September weather forecast and climate
Greater Napanee, Canada

Weather in September

Sea temperature

In September, the average sea temperature in Greater Napanee, Canada, is 19.8°C (67.6°F).
Note: For swimming, a surface water temperature of 19.8°C (67.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In Greater Napanee, the average length of the day in September is 12.5h.
[Resources]

FAQ

What is the sea temperature in September in Greater Napanee?

In Greater Napanee, the average seawater temperature in September is 19.8°C (67.6°F). For most, swimming in 19.8°C (67.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in September in Greater Napanee?

In September, the average length of the day is 12.5h.

Average sea temperature in September
Greater Napanee, Canada

Average sea temperature in September - Greater Napanee, Canada
  • Average sea temperature in September: 19.8°C

The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).

[Resources]

Average daylight in September
Greater Napanee, Canada

Average daylight in September - Greater Napanee, Canada
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

[Resources]