Climate and monthly weather forecast
De Haan, Belgium


The climate of De Haan

De Haan, Belgium, falls under the Köppen climate classification of Cfb. This categorisation denotes a Marine West Coast climate with warm summers. The town's geographical position by the shoreline significantly affects its weather patterns, delivering moderate temperatures and ample daylight throughout the year due to its near-constant exposure to the sun.

Taking a closer look at the climatological data, a steady shift in daylight hours occur annually. From a minimum of 8 hours in December and January, daylight increases to a peak 16.5 hours in June, subsequently receding gradually back to 8 hours by December. The amount of daylight De Haan receives contributes heavily to its temperature fluctuations and weather character.

Sea temperatures oscillate from a chilly 7.1°C (44.8°F) to 7.3°C (45.1°F) in the initial three months of the year. From April onwards, a consistent upward trend is observable, reaching a pleasant 18.4°C (65.1°F) by August before descending again to 10.5°C (50.9°F) by December. These variations correlate with the shifts in seasonality and the town's geographical positioning on the North Sea, adding another layer to De Haan's unique weather conditions. The highest sea temperature, remarkably in August at 18.4°C (65.1°F), paired with extended daylight, has a cooling impact over the summer, while the colder sea temperature during the winter amplifies the chilly conditions across De Haan.

The best time to visit De Haan

For those looking to experience comfortable temperatures and to make the most of the abundant daylight hours, the prime time to visit De Haan is between June and August. During this span, the town basks in daylight for up to 16.5 hours, with pleasant sea temperatures fluctuating around 16.8°C (62.2°F) to 18.4°C (65.1°F). These conditions make outdoor activities and beach visits enjoyable, delivering a vibrant and lively atmosphere to this charming coastal town.

The worst time to visit De Haan

Conversely, the period from January through to March could be considered the least favourable for visiting De Haan. During these months, daylight averages remain at their lowest, between 8 and 10 hours only, while sea temperatures linger at their coldest, oscillating between 7.1°C (44.8°F) to 7.3°C (45.1°F). This confluence of factors combines to create inhospitable weather for outdoor recreational activities.

Spring weather in De Haan

Springtime in De Haan, typically from April to June, brings a noticeable uptick in both daylight hours and sea temperatures. Daylight extends from 13.9 hours in April up to 16.5 hours come June, while the sea warms up from 9.2°C (48.6°F) to 14.8°C (58.6°F) over these months. This season represents a transition from the colder, darker months into a period of warmth and extended sunshine.

Summer weather in De Haan

Summers, spanning from July to September, are characterised by lengthy daylight hours and the year's warmest sea temperatures. July and August see an average daylight duration of 16.1 and 14.5 hours respectively, accompanied by sea temperatures lingering from 16.8°C (62.2°F) to a peak of 18.4°C (65.1°F). By September, daylight starts to recede, but the sea maintains a comfortable 18.2°C (64.8°F).

Autumn weather in De Haan

Autumn in De Haan, falling between October and November, introduces a steady decline in daylight hours and cooling sea temperatures. While October is marked by an average of 10.7 daylight hours with the sea cooling to 16.1°C (61°F), November sees further declines with typically 8.9 hours of daylight alongside a sea temperature of 13.8°C (56.8°F).

Winter weather in De Haan

Come winter, from December to February, daylight in De Haan reduces to its minimum, averaging between 8 to 8.5 hours, while the sea turns chilly, registering temperatures between 7.3°C (45.1°F) in February and 10.5°C (50.9°F) in December. Despite these colder conditions, the scenic beauty of De Haan can still enchant those who cherish tranquillity and solitude.

Weather in January

The weather in De Haan, Belgium commences the year with a winter ambiance. The temperatures in the sea measure at a relatively consistent 7.3°C (45.1°F). The sky usually features a mix of clear, cloudy, and partially overcast conditions. Weather in January »

Weather in February

In February, the weather in De Haan displays a slight decline in sea temperature, reaching 7.2°C (45°F). The city continues to experience the lingering winter chill throughout this month. Despite this, relatively longer periods of daylight are witnessed compared to January. Weather in February »

Weather in March

The arrival of March carries distinct changes in De Haan weather. A further dip in sea temperature to 7.1°C (44.8°F) occurs. Correspondingly, land temperatures also demonstrate a moderate drop. The longer daylight hours kick-start the process towards a warmer season. Weather in March »

Weather in April

April marks a noticeable shift in the weather patterns for De Haan. An abrupt rise in the sea temperature is seen, with values spiking to 9.2°C (48.6°F). Along with it, longer hours of daylight, reaching nearly mid-day in duration, become more prominent. Weather in April »

Weather in May

May brings in a considerably warmer influence on De Haan's climate. A considerable jump in sea temperatures to 11.8°C (53.2°F) is detectable. Seasonally, the city begins to transition into a pleasant summery mode. Extended daylight hours enrich the daily routines. Weather in May »

Weather in June

June ushers in summer to De Haan. The sea temperatures continue to rise, hitting a record 14.8°C (58.6°F) for the first half of the year. The increase in daylight hours complements the warmer temperatures. On the spectrum of weather conditions, clear and sunny skies dominate. Weather in June »

Weather in July

July is the midst of summer for De Haan. Sea temperatures reach a peak for the year at 16.8°C (62.2°F). The weather reflects this warmth, maintaining a sub-tropical ambiance most days. Longer periods of daylight gives the city a bright and radiant atmosphere. Weather in July »

Weather in August

In August, De Haan's weather exhibits a further increase in sea temperature to 18.4°C (65.1°F). This is usually the warmest month of the year. Extended daylight hours and warmer temperatures continue to dominate the climate. Even though it is summer, the coastal breeze maintains a refreshing balance. Weather in August »

Weather in September

September initiates a mild cooling trend in De Haan. The sea temperature recedes slightly from its peak to around 18.2°C (64.8°F). The daylight hours start to shrink but do not affect the overall warmth. Rainfall is unpredictable, with both dry and wet days possible. Weather in September »

Weather in October

October's weather in De Haan witnesses a more pronounced drop in sea temperature to 16.1°C (61°F). The shift from summer to autumn is palpable with shorter daylight hours. The landscape of the city starts changing, reflecting the autumnal charm. Weather in October »

Weather in November

As November sets in, the weather in De Haan experiences further cooling. Sea temperatures decrease to 13.8°C (56.8°F). The city transforms into a cool, cozy place as the days become shorter. Overcast skies become more common. Rainfall frequency intensifies, heralding the onset of the rainy season. In De Haan, Belgium, the average seawater temperature in November is 13.8°C (56.8°F). Note: Swimming in 13.8°C (56.8°F) is considered dangerous. Weather in November »

Weather in December

December in De Haan provides a fitting close to the year with lower sea temperatures of 10.5°C (50.9°F). The weather is unmistakably winterish in character, with a significantly reduced duration of daylight. Cooler temperatures prevail, but snowfall is not a common occurrence. Weather in December »

Frequently asked questions

When is the sea coldest in De Haan?

March is the month with the coldest seawater in De Haan, with an average sea temperature of 7.1°C (44.8°F).

When are the longest days in De Haan?

The month with the longest days in De Haan, Belgium, is June, with an average of 16h and 30min of daylight.

What month is the sea warmest in De Haan?

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

When is Daylight Saving Time (DST) in De Haan?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in De Haan, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the month with the shortest days in De Haan?

The month with the shortest days is December, with an average of 8h and 0min of daylight.

Average sea temperature
De Haan, Belgium

Average sea temperature - De Haan, 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).


Average daylight
De Haan, Belgium

Average daylight - De Haan, Belgium

The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).


De Haan, Belgium

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