Climate and monthly weather forecast
Saint-Marc, Haiti

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The climate of Saint-Marc

Saint-Marc, positioned in the heart of Haiti, is predominantly encapsulated by an Aw climate according to the Koppen climate classification, meaning the city experiences a tropical wet and dry or savanna climate. This characterizes a year-round warm climate, with distinct wet and dry seasons influenced by shifting monsoon winds.

Throughout the year, temperatures take an upward curving trajectory, soaring from an average high of 27.3°C (81.1°F) in January, escalating gradually to 30.7°C (87.3°F) in July, and subsiding back to 27.7°C (81.9°F) in December. Correspondingly, average low temperatures embark on a similar journey, incrementing from 20.1°C (68.2°F) in January to a peak of 23.5°C (74.3°F) in July and gently declining to 20.5°C (68.9°F) in December.

Rainfall in Saint-Marc follows a certain pattern, beginning with 13mm (0.51") in January and February. From March through September, Saint-Marc experiences the rainy season with peak precipitation of 118mm (4.65") in May. By October, rainfall starts to retreat, dwindling to 44mm (1.73") in November and down to 13mm (0.51") in December, marking the onset of the dry season.

The presence of sea is evident in Saint-Marc's weather parameters, with its impact on temperatures and humidity. Relative humidity oscillates around 76 to 77%, peaking at 81% in November. Even in the warmest months, the high sea temperature, reaching up to a toasty 29.9°C (85.8°F) in September, ensures that the heat is mitigated and relatively bearable coupled with a coastal breeze.

The best time to visit Saint-Marc

Saint-Marc's prime time for travel is during the dry season, predominantly between November and April. During this period, rainfall recedes significantly, offering tourists an opportunity to explore the city to its fullest. Temperatures during these months average between 27.7°C (81.9°F) and 30.4°C (86.7°F), providing an ideal climate for outdoor activities without the constant threat of rainfall. With sea temperatures hovering in the range of 27°C (80.6°F) to 28.3°C (82.9°F), November to April serves as an enticing period for water-based activities.

The worst time to visit Saint-Marc

Travelers may wish to avoid the months of May through September. This time represents the peak of the monsoons with heavy rainfall recorded, especially in May and June where precipitation measures 118mm (4.65") and 81mm (3.19") respectively. Additionally, temperatures run high, up to an average of 30.4°C (86.7°F), potentially imposing discomfort for some visitors not accustomed to a hot and humid climate.

Spring weather in Saint-Marc

Spring commences in Saint-Marc with a sudden surge in rainfall, which grows from 14mm (0.55") in February to 50mm (1.97") in April. Correspondingly, temperatures display an ascension with highs elevating from 27.8°C (82°F) to 29.1°C (84.4°F) and lows intensifying at a similar pace from 20.5°C (68.9°F) to 21.8°C (71.2°F). The daylight period lengthens moderately, allowing longer days under the tropical sun, with the UV index starting at 6 in February and intensifying to 7 in April.

Summer weather in Saint-Marc

Summer in Saint-Marc arrives with the mercurial interplay of sun and rain. July showcases the highest temperature averaging at 30.7°C (87.3°F), while June, being the wettest month, confronts the city with 81mm (3.19") of rainfall. Humidity levels remain consistent during these months, making the summer weather warm and sticky. The consistent sea temperature, peaking at 29.2°C (84.6°F) in July, provides an ideal condition for beach activities despite high humidity and occasional showers.

Autumn weather in Saint-Marc

Autumn in Saint-Marc experiences a drop in temperature, with averages descending from 30.4°C (86.7°F) in August to 28°C (82.4°F) in November. Rainfall takes the same downward trajectory, dwindling from 97mm (3.82") in August down to 44mm (1.73") in November, signposting the arrival of the dry season. Relative humidity, on the other hand, escalates to 81% in November, making the overall weather quite humid but less wet.

Winter weather in Saint-Marc

The winter period in Saint-Marc experiences the relatively cooler but dry weather conditions. December carries the lowest average high temperature of 27.7°C (81.9°F) and low temperature of 20.5°C (68.9°F). Rainfall is minimal, dropping to a mere 13mm (0.51") in December, marking the apex of the dry season. Humidity also tapers off slightly to 79%, ensuring a comfortable and dryer climatic condition, ideal for winter vacation.

Weather in January

In comparison to December, the weather conditions in Saint-Marc, Haiti become slightly warmer and more humid in January. It maintains similar levels of sunshine, with a gradual increase in daylight hours. Furthermore, the wind speed picks up slightly this month. Weather in January »

Weather in February

Transitioning from January, February brings a further increase in temperature, humidity, and wind speed in Saint-Marc. The sea temperature also witnesses a marginal drop. Even though daylight and sunshine hours remain consistent with January, February stands out for its relatively lesser rainy days, averaging at approximately 10.4 days. Weather in February »

Weather in March

March signifies the onset of spring, with a gradual climb in temperature and humidity in Saint-Marc. Concurrently, wind speed decreases slightly compared to February, offering comfortable weather conditions. With more daylight hours and 15.7 days of rainfall totalling 22mm (0.87"), this month marks the beginning of the rainy season. Weather in March »

Weather in April

April brings the highest jump in rainfall for the year in Saint-Marc, surging to 50mm (1.97") from the previous 22mm (0.87") in March. This significant increase marks April as a particularly wet month. Coinciding with the rise in rainfall is an increase in temperature, humidity, and sea temperature. Weather in April »

Weather in May

Moving into May, Saint-Marc continues to warm up, experiencing an uptick in temperature. The daylight hours peak to their highest at 13 hours, allowing plenty of time to soak up the sun. Notably, May records the highest rainfall of the year, with a steep increase to 118mm (4.65") compared to April's 50mm (1.97"). Weather in May »

Weather in June

June brings a minor dip in temperature from the peak of May, along with slight reductions in daylight and wind speed. Sea temperature, however, continues to rise. There is a considerable drop in rainfall to 81mm (3.19"), making June less wet than May. Weather in June »

Weather in July

Weather in July in Saint-Marc remains hot and humid with minor changes in temperature, humidity, and sea temperature compared to June. A notable shift, however, is in rainfall - jumping slightly from 81mm (3.19") to 88mm (3.46"). Despite the increase in rainfall, July experiences the longest hours of sunshine, together with ample daylight. Weather in July »

Weather in August

August sees slightly cooler temperatures compared to July and a minor decrease in sea temperature. This month records the highest sea temperature of 29.8°C (85.6°F). As for precipitation, August experiences an increase in rainfall to 97mm (3.82"). Weather in August »

Weather in September

As autumn approaches, September brings a cool-down in temperature and sea temperature from its peak in August in Saint-Marc. On the contrary, rainfall slightly rises to 101mm (3.98"), marking September as the month with the second-highest rainfall. Weather in September »

Weather in October

October sees further cooling in terms of temperature, sea temperature, and a decrease in rainfall to 95mm (3.74") in Saint-Marc. The daylight hours further shorten but manage to maintain significant sunshine hours. Despite the weather becoming cooler and the rainfall subsiding slightly, October still offers plenty of sunny and pleasurable weather. The transition from September to October sees average high-temperatures adjusting to a still moderately hot 29.3°C (84.7°F), from a not significantly different 29.8°C (85.6°F). Weather in October »

Weather in November

In November, Saint-Marc opens up to a significant drop in rainfall, receding to 44mm (1.73") from October's 95mm (3.74"). Consequently, it marks the end of the rainy season and the beginning of the dry period. Despite reduced rainfall, the number of rainy days decreases only marginally from the previous month. Weather in November »

Weather in December

December in Saint-Marc is the coolest month temperature-wise, marking the onset of winter. The city also experiences the lowest sea temperature, with a decrease in both rainfall and daylight hours. In a significant drop from November, December records the lowest rainfall of the year, as low as 13mm (0.51"). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Saint-Marc?

The lowest temperatures in Saint-Marc, Haiti, are recorded in January, with averages reaching a high of 27.3°C (81.1°F) and a low of 20.1°C (68.2°F).

What is the driest month in Saint-Marc?

The months with the least rainfall in Saint-Marc, Haiti, are January and December Rain falls for 9.6 days and accumulates 13mm (0.51") of rain.

How many days does it rain in Saint-Marc?

Throughout the year, there are 219.6 rainfall days, and 736mm (28.98") of precipitation is accumulated.

What is the month with the least sunshine in Saint-Marc?

The months with the least sunshine in Saint-Marc, Haiti, are January and February, with an average of 7.2h of sunshine.

When is the lowest UV index in Saint-Marc?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 6.

When is the sea coldest in Saint-Marc?

February is the month with the coldest seawater in Saint-Marc, with an average sea temperature of 26.8°C (80.2°F).

What are the least humid months in Saint-Marc?

The months with the lowest humidity are March and April, with an average relative humidity of 74%.

When is Daylight Saving Time (DST) in Saint-Marc?

On Sunday, 10. March 2024, at 02:00, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 02:00, and the time zone reverts from EDT to EST.

What are the months with the highest UV index in Saint-Marc?

The months with the highest UV index in Saint-Marc are April through September, with an average maximum UV index of 7.

What is the wettest month in Saint-Marc?

The month with the most rainfall in Saint-Marc, Haiti, is May, when the rain falls for 25.3 days and typically aggregates up to 118mm (4.65") of precipitation.

When are the longest days in Saint-Marc?

With an average of 13h and 18min of daylight, June has the longest days of the year.

What is the warmest month in Saint-Marc?

Saint-Marc's warmest month, July, generally records average temperatures ranging from a high of 30.7°C (87.3°F) to a low of 23.5°C (74.3°F).

What is the month with the most sunshine in Saint-Marc?

July and August, with an average of 11.3h of sunshine, are months with the most sunshine in Saint-Marc, Haiti.

What is the month with the warmest sea water in Saint-Marc?

The month with the warmest seawater in Saint-Marc is September, with an average sea temperature of 29.9°C (85.8°F).

What is the most humid month in Saint-Marc?

With an average relative humidity of 81%, November is the most humid month.

What is the month with the shortest days in Saint-Marc?

With an average of 11h and 0min of daylight, December has the shortest days of the year in Saint-Marc.

Average temperature
Saint-Marc, Haiti

Average temperature - Saint-Marc, Haiti

The warmest month (with the highest average high temperature) is July (30.7°C).
The month with the lowest average high temperature is January (27.3°C).

The month with the highest average low temperature is July (23.5°C).
The coldest month (with the lowest average low temperature) is January (20.1°C).

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Average pressure
Saint-Marc, Haiti

Average pressure - Saint-Marc, Haiti

The month with the highest atmospheric pressure is January (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).

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Average wind speed
Saint-Marc, Haiti

Average wind speed - Saint-Marc, Haiti

The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).

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Average humidity
Saint-Marc, Haiti

Average humidity - Saint-Marc, Haiti

The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are March and April (74%).

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Average rainfall
Saint-Marc, Haiti

Average rainfall - Saint-Marc, Haiti

The wettest month (with the highest rainfall) is May (118mm).
The driest months (with the least rainfall) are January and December (13mm).

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Average rainfall days
Saint-Marc, Haiti

Average rainfall days - Saint-Marc, Haiti

The month with the highest number of rainy days is May (25.3 days).
The month with the least rainy days is December (8.5 days).

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Average sea temperature
Saint-Marc, Haiti

Average sea temperature - Saint-Marc, Haiti

The best month for swimming (with the highest average sea temperature) is September (29.9°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).

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Average daylight / Average sunshine
Saint-Marc, Haiti

Average daylight / Average sunshine - Saint-Marc, Haiti

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

The months with the most sunshine are July and August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 12min).

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Average sunshine days
Saint-Marc, Haiti

Average sunshine days - Saint-Marc, Haiti

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is September (3.2 days).

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Average UV index
Saint-Marc, Haiti

Average UV index - Saint-Marc, Haiti

The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 6).

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Average visibility
Saint-Marc, Haiti

Average visibility - Saint-Marc, Haiti

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Saint-Marc, Haiti

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