Weather in May
Sea temperature
In May, the average sea temperature in Greater Napanee, Canada, is 5.5°C (41.9°F).Note: In 5.5°C (41.9°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F).
Daylight
In May, the average length of the day is 14h and 47min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:12 pm. On the last day of May, in Greater Napanee, sunrise is at 5:27 am and sunset at 8:44 pm EDT.
Updated: Jul 14, 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 May in Greater Napanee?
In May, the average sea temperature 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?
The average day length in May is 14h and 47min.
What time are sunrise and sunset in May?
In May, on the first day of the month, sunrise is at 5:57 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:44 pm EDT.
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: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
Greater Napanee, Canada
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