Greater Napanee
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Greater Napanee, Canada

Sea temperature

In September, the average sea temperature in Greater Napanee, Canada, is 19.8°C (67.6°F).
Note: 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).

Daylight

The average length of the day in September is 12.5h.

What is the sea temperature in September in Greater Napanee?

In Greater Napanee, Canada, in September, the average water temperature is 19.8°C (67.6°F). 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).

How many hours of daylight does Greater Napanee have in September?

In Greater Napanee, Canada, the average length of the day in September is 12.5h.
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).

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 shortest days is December (Average daylight: 8.9h).