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

May weather forecast and climate
Greater Napanee, Canada

Sea temperature

In Greater Napanee, Canada, in May, the average water temperature is 5.5°C (41.9°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The average length of the day in May in Greater Napanee is 14.8h.

What is the sea water temperature in May in Greater Napanee?

In Greater Napanee, Canada, the average seawater temperature in May is 5.5°C (41.9°F). Swimming in 5.5°C (41.9°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In Greater Napanee, the average length of the day in May is 14.8h.
Average sea temperature in May - Greater Napanee, Canada
  • Average sea temperature in May: 5.5°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 May - Greater Napanee, Canada
  • Average daylight in May: 14.8h

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