May weather forecast and climate
Greater Napanee, Canada

Weather in May

Sea temperature

In May, the average sea temperature in Greater Napanee, Canada, 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

In May, the average length of the day is 14.8h.
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FAQ

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

In Greater Napanee, in May, the average water temperature is 5.5°C (41.9°F). Swimming in 5.5°C (41.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

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

In May, the average length of the day in Greater Napanee, Canada, is 14.8h.

Average sea temperature in May
Greater Napanee, Canada

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).

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Average daylight in May
Greater Napanee, Canada

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

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