Monthly weather forecast and climate
Greater Napanee, Canada

Weather in January

In January, the average sea temperature in Greater Napanee, Canada, is 3.3°C (37.9°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in January »

Weather in February

In February, the average sea temperature in Greater Napanee, Canada, is 2.8°C (37°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

Weather in March

With an average sea temperature of 1.9°C (35.4°F), March is the month with the coldest seawater in Greater Napanee, Canada. Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

Weather in April

In Greater Napanee, Canada, the average seawater temperature in April is 3.4°C (38.1°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in April »

Weather in May

In May, the average sea temperature in Greater Napanee, Canada, is 5.5°C (41.9°F). Note: 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. Weather in May »

Weather in June

In June, the average sea temperature in Greater Napanee, Canada, is 14.5°C (58.1°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. Weather in June »

Weather in July

In Greater Napanee, Canada, the average seawater temperature in July is 20.8°C (69.4°F). Note: Swimming in 20.8°C (69.4°F) is not enjoyable for the majority. Weather in July »

Weather in August

August is the month with the warmest seawater in Greater Napanee, Canada, with an average sea temperature of 22.3°C (72.1°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in August »

Weather in September

In Greater Napanee, Canada, in September, the average water temperature is 19.8°C (67.6°F). Note: For most, swimming in 19.8°C (67.6°F) is not an enjoyable activity. Weather in September »

Weather in October

In Greater Napanee, Canada, the average seawater temperature in October is 14.2°C (57.6°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. Weather in October »

Weather in November

In Greater Napanee, Canada, in November, the average water temperature is 9.3°C (48.7°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. Weather in November »

Weather in December

In December, the average sea temperature in Greater Napanee, Canada, is 5.4°C (41.7°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. Weather in December »
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FAQ

What month is the sea coldest in Greater Napanee?

With an average sea temperature of 1.9°C (35.4°F), March is the month with the coldest seawater.

When are the longest days in Greater Napanee?

June has the longest days of the year, with an average of 15.5h of daylight.

What is the month with the warmest sea water in Greater Napanee?

With an average sea temperature of 22.3°C (72.1°F), August is the month with the warmest seawater in Greater Napanee.

What is the month with the shortest days in Greater Napanee?

The month with the shortest days is December, with an average of 8.9h of daylight.

Average sea temperature
Greater Napanee, Canada

Average sea temperature - Greater Napanee, Canada

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
Greater Napanee, Canada

Average daylight - Greater Napanee, Canada

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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