Climate and monthly weather forecast
Willemstad, Curaçao

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The organized harbor city of Willemstad in Curaçao
The organized harbor city of Willemstad in Curaçao

The climate of Willemstad

Willemstad, the capital city of Curaçao, is located in the Southern Caribbean Sea, off the Venezuelan coast. It has been classified under the Köppen climate classification as Aw which refers to a tropical wet and dry or savanna climate, indicative of clear atmospheric distinctions.

Throughout the year, Willemstad experiences a relatively stable temperature pattern. The annual average high temperature ranges from 29.7°C (85.5°F) in January to a peak 32.6°C (90.7°F) in August, and low temperature fluctuates between 24.3°C (75.7°F) and 26.5°C (79.7°F). The sea temperature has a yearly span between 26°C (78.8°F) and 29°C (84.2°F), following a steady trajectory that encapsulates the area's tropical essence.

Relative to humidity, it generally hovers in the area of 76.1% to 79.6%. Daylight hours increase from 11.4 hours in December to a high of 12.8 hours in June and July, influencing the UV index correspondingly, which can reach up to 12 in the brighter months from April to August.

In terms of rainfall, significant diversity is seen throughout the year. The minimum monthly average precipitation of 14mm (0.55") falls in March while the peak, of 100mm (3.94"), is experienced in December. Also, the days with rainfall are noticeably fewer from February to June, with the lesser end of 2 days in May, to a high of 11.5 days in December.

The best time to visit Willemstad

Given the climate data available, the best time to visit Willemstad would ideally be from April to June. During this period, the weather is relatively mild with high temperatures ranging from 31.1°C (88°F) to 32°C (89.6°F) and lows from 25.5°C (77.9°F) to 26.4°C (79.5°F). These months also have lower rainfall levels, with the average monthly precipitation ranging from 19mm (0.75") to 20mm (0.79"), and a lesser number of rainy days, typically between 2 to 3 days. Added to this, the sea temperature stands around 27°C (80.6°F) to 28°C (82.4°F) during these months making it a favourable period for water-based activities.

The worst time to visit Willemstad

The least ideal time to visit Willemstad can be deemed to be towards the end of the year, starting from October through December. This period records the highest rainfall patterns, with an average monthly precipitation soaring from 84mm (3.31") in October to 100mm (3.94") in December. The number of rainy days also increases drastically, from 7.4 in October to 11.5 in December thereby leading to potential disruptions in travel plans.

Spring weather in Willemstad

During the spring season, from March to May, weather conditions in Willemstad are quite agreeable. Temperatures gradually rise from a high of 30.5°C (86.9°F) in March to 32°C (89.6°F) in May, while the lows increase from 24.8°C (76.6°F) to 26.4°C (79.5°F). The UV index is consistently high, at 12, indicating an abundance of sunshine. Rainfall is quite minimal during this period, with monthly averages ranging from 14mm (0.55") in March to 20mm (0.79") in May.

Summer weather in Willemstad

Summers in Willemstad, from June to August, are quite warm with high temperatures creeping up from 32°C (89.6°F) in June to 32.6°C (90.7°F) in August, while the lows are around 26.4°C (79.5°F) to 26.5°C (79.7°F). Rainfall remains low in June, at an average of 19mm (0.75"), only to double to 40mm (1.57") in July. Days filled with sunshine are plentiful, with daylight hours at its yearly high of 12.8, indicating a UV index also at its peak of 12.

Autumn weather in Willemstad

Autumn weather in Willemstad, covering September through November, encounters a surge in precipitation levels. While temperatures remain consistently high, from a peek of 32.6°C (90.7°F) in September to 31.1°C (88°F) in November, and lows ranging from 26.5°C (79.7°F) down to 25.6°C (78.1°F), rainfall spikes significantly. September gets an average of 49mm (1.93") rainfall, escalating to 97mm (3.82") in November, with the number of rainy days increasing to 9.9 days in November.

Winter weather in Willemstad

December to February marks the winter season in Willemstad. The high temperatures range from 29.7°C (85.5°F) to 30.5°C (86.9°F) while the lows lie between 24.3°C (75.7°F) and 24.8°C (76.6°F). December receives the highest rainfall of the year, at 100mm (3.94"), with 11.5 days on average experiencing precipitation. Daylight hours are at their yearly minimum, with 11.4 hours in December, extending gradually to 11.8 hours in February. The UV index also reflects this shift, declining from 9 in December to 10 in February.

Weather in January

Willemstad's new year begins with mild temperatures, tolerable humidity levels, and occasionally moderate showers. A coastal city in Curaçao, Willemstad experiences high temperatures ranging from 29.7°C (85.5°F) to 31.9°C (89.4°F) in the afternoons and lows of 24.3°C (75.7°F) in the early mornings of January. Weather in January »

Weather in February

The second month of the year in Willemstad, Curaçao displays continuity of relatively mild weather from January. February records shorter rainy spells compared to preceding months, lining the coastal city with a perennial charm. Weather in February »

Weather in March

Weather transitioning from February to March in Willemstad manifests subtle variations. The city experiences a further reduction in the number of rainy days, promoting more outdoor explorations by locals and tourists alike. March appears to be the driest month of the year, with a significant drop in rainfall to 14mm (0.55"), attributing to its appeal for travel enthusiasts. Weather in March »

Weather in April

April in Willemstad ushers in a more drying yet warming trend as the city transitions from the first quarter. The reduction in rainfall persists with an insignificantly low increase, offering the public more opportunities to engage in outdoor parties, sports, and festivals. Weather in April »

Weather in May

May brings a noticeable shift in Willemstad weather as it moves towards the peak of the warm season. The month carries a constant warming trend with the highest temperature soaring to 31.6°C (88.9°F), demonstrating the city's shift towards its summer months. Weather in May »

Weather in June

Willemstad's weather in June bears the prominence of the warmest month with the highest temperature peaking at 32°C (89.6°F). This month continues to offer sunny summer days suitable for all types of outdoor activities, recreational events, and water sports. Weather in June »

Weather in July

Willemstad’s weather, in the heart of summer season welcomes July with warm air summer breezes. A modest uptick in rainfall can be seen this month at 40mm (1.57"), signaling the onset of the rainy season in the coming months. July maintains the high sea temperature of 28°C (82.4°F) from June providing a welcoming relief from the increasing temperature and humidity levels. Weather in July »

Weather in August

The month of August in Willemstad brings with it a continuation of the warm weather interspersed with periods of rainfall. The city experiences the highest recorded temperature for the year at 32.4°C (90.3°F). Along with this comes a gradual but noticeable increase in rainfall to 42mm (1.65"), indicating a return of the wet season. Weather in August »

Weather in September

As the city moves into the month of September, residents of Willemstad experience an incremental rise in the volume of rainfall. September sustains the warm conditions of August with a minor increase in highest temperature readings to 32.6°C (90.7°F). Weather in September »

Weather in October

October brings a significant shift to the weather in Willemstad with notable rainfall. The seemingly continuous rainy spells make this month one of the wettest of the year, with rainfall peaking at 84mm (3.31"). However, the high temperature shows a minute decrease, hinting at the approaching end of the warm season. Weather in October »

Weather in November

November in Willemstad signifies the arrival of the wettest month and the gradual recede of warm temperatures. A noticeable rise in rainfall to 97mm (3.82") and an increase in the number of rainy days to 9.9 make this month the rainiest. Weather in November »

Weather in December

The last month of the year in Willemstad, December, bids farewell to the warm season amidst reduced temperature and continued showers. December weather indicates the climatic transition from the wet to the dry season with the highest rainfall volume recorded at 100mm (3.94"). Weather in December »
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Frequently asked questions

What are the coldest months in Willemstad?

During the coldest month in Willemstad, January, temperatures average a high of 29.7°C (85.5°F) and a low of 24.3°C (75.7°F).

How much does it rain in Willemstad?

Throughout the year, in Willemstad, there are 69.4 rainfall days, and 553mm (21.77") of precipitation is accumulated.

What are the months with the coldest sea water in Willemstad?

The months with the coldest seawater are February and March, with an average sea temperature of 26°C (78.8°F).

What are the months with the highest UV index in Willemstad?

February through September, with an average maximum UV index of 12, are months with the highest UV index in Willemstad.

What is the least humid month in Willemstad?

With an average relative humidity of 76.1%, March is the least humid month.

What is the driest month in Willemstad?

March is the month with the least rainfall in Willemstad. Rain falls for 2.8 days and accumulates 14mm (0.55") of precipitation.

When are the longest days in Willemstad?

The month with the longest days is June, with an average of 12h and 48min of daylight.

What month has the most sunshine in Willemstad?

The month with the most sunshine in Willemstad, Curaçao, is August, with an average of 9.5h of sunshine.

What is the warmest month in Willemstad?

Willemstad, Curaçao, records the warmest temperatures in September, averaging a high of 32.6°C (90.7°F) and a low of 26.5°C (79.7°F).

When is the sea warmest in Willemstad?

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Willemstad.

What is the most humid month in Willemstad?

With an average relative humidity of 79.6%, November is the most humid month.

What is the wettest month in Willemstad?

The month with the most rainfall in Willemstad is December, when the rain falls for 11.5 days and typically aggregates up to 100mm (3.94") of precipitation.

What is the month with the shortest days in Willemstad?

December has the shortest days of the year in Willemstad, with an average of 11h and 24min of daylight.

Is there Daylight Saving Time (DST) in Willemstad?

Willemstad does not utilize Daylight Saving Time (DST). AST timezone is used throughout the entire year.

What is the month with the least sunshine in Willemstad?

The month with the least sunshine in Willemstad is December, with an average of 7.8h of sunshine.

When is the lowest UV index in Willemstad?

The month with the lowest UV index is December, with an average maximum UV index of 9.

Average temperature
Willemstad, Curaçao

Average temperature - Willemstad, Curaçao

The warmest month (with the highest average high temperature) is September (32.6°C).
The month with the lowest average high temperature is January (29.7°C).

The month with the highest average low temperature is September (26.5°C).
The coldest month (with the lowest average low temperature) is January (24.3°C).

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Average humidity
Willemstad, Curaçao

Average humidity - Willemstad, Curaçao

The month with the highest relative humidity is November (79.6%).
The month with the lowest relative humidity is March (76.1%).

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Average rainfall
Willemstad, Curaçao

Average rainfall - Willemstad, Curaçao

The wettest month (with the highest rainfall) is December (99.8mm).
The driest month (with the least rainfall) is March (14.2mm).

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Average rainfall days
Willemstad, Curaçao

Average rainfall days - Willemstad, Curaçao

The month with the highest number of rainy days is December (11.5 days).
The month with the least rainy days is May (2 days).

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Average sea temperature
Willemstad, Curaçao

Average sea temperature - Willemstad, Curaçao

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

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Average daylight / Average sunshine
Willemstad, Curaçao

Average daylight / Average sunshine - Willemstad, Curaçao

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 48min).

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Average UV index
Willemstad, Curaçao

Average UV index - Willemstad, Curaçao

The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).

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Willemstad, Curaçao

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