Monthly weather forecast and climate
Knokke-Heist, Belgium

Weather in January

In Knokke-Heist, Belgium, in January, the average water temperature is 7.3°C (45.1°F). Note: Swimming in 7.3°C (45.1°F) is considered life-threatening. Weather in January »

Weather in February

In February, the average sea temperature in Knokke-Heist, Belgium, is 7.2°C (45°F). Note: Swimming in 7.2°C (45°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in February »

Weather in March

The month with the coldest seawater in Knokke-Heist, Belgium, is March, with an average sea temperature of 7.1°C (44.8°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 March »

Weather in April

In April, the average sea temperature in Knokke-Heist, Belgium, is 9.2°C (48.6°F). Note: Swimming in 9.2°C (48.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in April »

Weather in May

In Knokke-Heist, Belgium, in May, the average water temperature is 11.8°C (53.2°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 May »

Weather in June

In June, the average sea temperature in Knokke-Heist, Belgium, is 14.8°C (58.6°F). Note: Swimming in 14.8°C (58.6°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 June »

Weather in July

In July, the average sea temperature in Knokke-Heist, Belgium, is 16.8°C (62.2°F). Note: Swimming in 16.8°C (62.2°F) is not enjoyable for the majority. Weather in July »

Weather in August

With an average sea temperature of 18.4°C (65.1°F), August is the month with the warmest seawater in Knokke-Heist, Belgium. Note: For most, swimming in 18.4°C (65.1°F) is not an enjoyable activity. Weather in August »

Weather in September

In Knokke-Heist, Belgium, in September, the average water temperature is 18.2°C (64.8°F). Note: For swimming, a surface water temperature of 18.2°C (64.8°F) is not enjoyable for the majority. Weather in September »

Weather in October

In October, the average sea temperature in Knokke-Heist, Belgium, is 16.1°C (61°F). Note: For most, swimming in 16.1°C (61°F) is not an enjoyable activity. Weather in October »

Weather in November

In Knokke-Heist, Belgium, the average seawater temperature in November is 13.8°C (56.8°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 Knokke-Heist, Belgium, is 10.5°C (50.9°F). Note: Swimming in 10.5°C (50.9°F) is considered life-threatening. Weather in December »
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FAQ

What month is the sea coldest in Knokke-Heist?

With an average sea temperature of 7.1°C (44.8°F), March is the month with the coldest seawater in Knokke-Heist, Belgium.

When are the longest days in Knokke-Heist?

The month with the longest days in Knokke-Heist, Belgium, is June, with an average of 16.5h of daylight.

When is the sea warmest in Knokke-Heist?

August is the month with the warmest seawater, with an average sea temperature of 18.4°C (65.1°F).

What is the month with the shortest days in Knokke-Heist?

With an average of 8h of daylight, December has the shortest days of the year in Knokke-Heist, Belgium.

Average sea temperature
Knokke-Heist, Belgium

Average sea temperature - Knokke-Heist, Belgium

The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is March (7.1°C).

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Average daylight
Knokke-Heist, Belgium

Average daylight - Knokke-Heist, Belgium

The month with the longest days is June (Average daylight: 16.5h).
The month with the shortest days is December (Average daylight: 8h).

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