Yearly & Monthly weather - Cul-de-Sac, Saint Martin

The climate of Cul-de-Sac

Cul-de-Sac, located in Saint Martin, experiences a tropical wet and dry climate, as classified per the Köppen climate classification 'Aw'. This climate type is marked by significant variability in temperature and precipitation throughout the year. The climate remains predominately warm, with an average high temperature fluctuating from 25.8°C (78.4°F) in March to a high of 28.8°C (83.8°F) in September. Meanwhile, the average low temperatures range from 24.7°C (76.5°F) in March to 27.7°C (81.9°F) in September, providing an evident warmth throughout the year.

The skies above Cul-de-Sac present an interesting scenario, with cloud coverage oscillating between 34% in February and March to 42% in May and June. Visible sunshine hours also vary significantly, with a peak of 10.3 hours per day in August and a relative low of 6.5 hours in November and December. Consequently, the duration of sunshine is expected to be longer during the summer months.

An essential component of Cul-de-Sac's climate is its rainfall patterns. With an annual oscillation from 19mm (0.75") in February to 103mm (4.06") in October, Cul-de-Sac demonstrates a distinct wet and dry season. On the humidity front, the figures remain high throughout the year, creating a moist environment averaging between 75% in January, February, March, and December to a high of 78% for May, June, July, and August.

The best time to visit Cul-de-Sac

Given the area's tropical wet and dry climate, the best time to visit Cul-de-Sac falls within February to April. During these months, the rainfall is relatively low, varying between 19mm (0.75") and 41mm (1.61"). These months also feature longer hours of sunshine, swinging from 8.8 hours to 10 hours. Cul-de-Sac's average low temperatures range from 24.8°C (76.6°F) to 25.3°C (77.5°F), complimented by a comfortable breeze courtesy of wind speeds from 22.6km/h (14mph) to 24.2km/h (15mph). With less cloud coverage of around 34% to 37%, travellers during these months will likely get unobstructed views of the tropical locale.

The worst time to visit Cul-de-Sac

Conversely, the worst time to visit Cul-de-Sac is during the wet season running from August to November. These months witness the highest rainfall, soaring from 99mm (3.9") to 103mm (4.06"). Coupled with sizable humidity levels, around 77% and 76%, high temperatures of around 28.3°C (82.9°F) to 28.8°C (83.8°F), and strong winds at 20.3km/h (12.6mph) and 18.9km/h (11.7mph), these conditions can dampen vacation experiences. With reduced sunshine hours of 9.4 to 6.6 and an amplified cloud cover ranging from 37% to 38%, sight-seeing might just be a washed-out affair.

Spring weather in Cul-de-Sac

Spring in Cul-de-Sac from March until May, is marked by a steady incline in temperature and humidity. Average high temperatures rise from 25.8°C (78.4°F) in March to a peak of 27.2°C (81°F) in May. While average low temperatures see an increase as well, rising from 24.7°C (76.5°F) to 26°C (78.8°F), respectively. Rainfall sees a substantial ascent, starting at 24mm (0.94") in March and reaching up to 84mm (3.31") in May. Wind speeds vary in spring but remain generally steady, ranging from 22.6km/h (14mph) in March to 22.8km/h (14.2mph) in May.

Summer weather in Cul-de-Sac

June to August represents Cul-de-Sac’s summer. The average high temperature surpasses 28°C (82.4°F). Favourably warm is on the cards with average lows of 26.8°C (80.2°F) to 27.6°C (81.7°F). Rain showers increase from June's 55mm (2.17") to a heavy 100mm (3.94") in August, bringing along a jump in humidity levels as well. The blustery winds also pick up, soaring from 23.7km/h (14.7mph) in June to 24.2km/h (15mph) in August.

Autumn weather in Cul-de-Sac

Cul-de-Sac in the autumn months, September to November, continues to bask under warm temperatures. Average high temperatures during this period oscillate from 28.8°C (83.8°F) to 27.9°C (82.2°F) and average lows slightly descend from 27.7°C (81.9°F) to 26.6°C (79.9°F). This season sees the heaviest rainfall of the year, peaking at 103mm (4.06") in October. Simultaneously, wind speeds reduce from 20.3km/h (12.6mph) in September to 18.9km/h (11.7mph) by October.

Winter weather in Cul-de-Sac

Winter months in Cul-de-Sac, December to February, experience a slight cooling with average high temperatures dropping from 26.8°C (80.2°F) in December to 25.9°C (78.6°F) in February. Concurrently, the average low temperatures reduce from 25.8°C (78.4°F) to 24.8°C (76.6°F). The weather remains windy during these months, with wind speeds of 24.2km/h (15mph) in December and February. A significant decline in rainfall is observed as it falls from 45mm (1.77") in December to a low of 19mm (0.75") by February, marking the onset of Cul-de-Sac's dry season.

Weather in January

Cul-de-Sac in January inherits the Caribbean's tropical characteristics, creating a climate characterized by high temperatures and significant rainfall. The weather in January sees a high temperature of 26.1°C (79°F), noticeably warmer compared to December’s high of 26.8°C (80.2°F). Weather in January »

Weather in February

The pattern established in January continues into February, with minor fluctuations. February experiences fairly similar temperatures as the previous month but notable is that it is the driest period of the year with a total of only 19mm (0.75") of rain throughout the month. Weather in February »

Weather in March

Moving into March, noticeable are the patterns of stability - no major changes from February’s weather conditions. March holds a mixture of periods of sunshine and rain showers, typical for a tropical climate. The balance between bright sunny days and periodic rainfall continues from February, with a slight increase of rainfall to 24mm (0.94"). Weather in March »

Weather in April

April in Cul-de-Sac significantly differs from the previous months of the year, with changes in several weather parameters. Noticeably, April stands out with an increase in the average rainfall to 41mm (1.61"), nearly double the amount observed in March. Weather in April »

Weather in May

May marks the start of the region's rainiest period. The dry, windier weather of the past few months transitions into a considerably rainier period, with the average monthly rainfall rising to a notable 84mm (3.31"). The humidity, relative to the previous months, experiences a slight increase, adding to the moist environment. Weather in May »

Weather in June

Come June, Cul-de-Sac's weather displays characteristics of a full-fledged wet season. The weather pattern continues from May with high humidity and significantly more rainfall. June experiences the highest daily sunshine hours of the year, basking the city under 10.1 hours of bright sunlight. Weather in June »

Weather in July

July further accentuates the characteristics of Cul-de-Sac's wet season. It stands out as the windiest month of the year, with average wind speed reaching 25.6km/h (15.9mph). The amount of rainfall and humidity remains high, creating a humid and wet atmosphere. Weather in July »

Weather in August

August experiences some changes in weather conditions compared to the previous month. The distinct difference in August's weather lies in its title as the wettest month, as the average rainfall climbs up to 100mm (3.94"). The temperature remains fairly stable and warm throughout the month. Weather in August »

Weather in September

With the transition into September, noticeable changes appear in Cul-de-Sac's weather. September bears the title of having the highest recorded temperatures for the year, with an average high of 28.8°C (83.8°F). There is a decrease in average rainfall from August's high, but humidity remains consistent. Weather in September »

Weather in October

October in Cul-de-Sac sees a shift in weather patterns from the preceding months. The dip in average temperature from September’s high to a more comfortable 28.5°C (83.3°F) is a significant change. The average rainfall increases to 103mm (4.06"), exceeding August's wettest month, with a decrease in average sunshine hours to 6.6 hours daily. Weather in October »

Weather in November

November offers a slight respite from October’s substantial rainfall. The significantly cooler weather differentiates November from October, with average high temperatures decreasing to 27.9°C (82.2°F). There's a slight decrease in rainfall from the previous month's high, providing more opportunities to enjoy outdoor activities. Weather in November »

Weather in December

December ushers in the dry season in Cul-de-Sac. There's a significant drop in rainfall to 45mm (1.77"), marking the driest period since February. The outdoor temperature becomes more pleasant as the highest temperature averages at a comfortable 26.8°C (80.2°F). Weather in December »

Updated: Feb 5, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the least humid month in Cul-de-Sac?

January through March and December, with an average relative humidity of 75%, are the least humid months.

How many days does it rain in Cul-de-Sac?

In Cul-de-Sac, during the entire year, the rain falls for 252.8 days and collects up to 771mm (30.35") of precipitation.

What is the month with the highest UV index in Cul-de-Sac?

The months with the highest UV index in Cul-de-Sac, Saint Martin, are January through November, with an average maximum UV index of 7.

What is the driest month in Cul-de-Sac?

February is the month with the least rainfall in Cul-de-Sac, Saint Martin. Rain falls for 14.8 days and accumulates 19mm (0.75") of precipitation.

What is the coldest time of year in Cul-de-Sac?

March, with average temperatures reaching a high of 25.8°C (78.4°F) and a low of 24.7°C (76.5°F), is the coldest month in Cul-de-Sac.

What is the most humid month in Cul-de-Sac?

The months with the highest humidity are May through August, with an average relative humidity of 78%.

When are the longest days in Cul-de-Sac?

June has the longest days of the year in Cul-de-Sac, Saint Martin, with an average of 13h and 12min of daylight.

What month has the most sunshine in Cul-de-Sac?

August has the most sunshine of the year in Cul-de-Sac, Saint Martin, with an average of 10.3h of sunshine.

What part of the year is the hottest in Cul-de-Sac?

With average high and low temperatures of 28.8°C (83.8°F) and 27.7°C (81.9°F) respectively, September is Cul-de-Sac's warmest month.

What is the rainiest month in Cul-de-Sac?

The month with the most rainfall is October, when the rain falls for 22.9 days and typically aggregates up to 103mm (4.06") of precipitation.

What is the month with the least sunshine in Cul-de-Sac?

The months with the least sunshine are November and December, with an average of 6.5h of sunshine.

What is the month with the shortest days in Cul-de-Sac?

December has the shortest days of the year, with an average of 11h and 6min of daylight.

Is there Daylight Saving Time (DST) in Cul-de-Sac?

Cul-de-Sac does not observe Daylight Saving Time (DST). AST timezone is used over the entire year.

When is the lowest UV index in Cul-de-Sac?

The month with the lowest UV index in Cul-de-Sac is December, with an average maximum UV index of 6.

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Long-term

Year J F M A M J J A S O N D

Average temperature
Cul-de-Sac, Saint Martin

Average high temperature in January:
26.1°C
Average high temperature in February:
25.9°C
Average high temperature in March:
25.8°C
Average high temperature in April:
26.3°C
Average high temperature in May:
27.2°C
Average high temperature in June:
28.1°C

Average high temperature in July:
28.3°C
Average high temperature in August:
28.5°C
Average high temperature in September:
28.8°C
Average high temperature in October:
28.5°C
Average high temperature in November:
27.9°C
Average high temperature in December:
26.8°C

The warmest month (with the highest average high temperature) is September (28.8°C).
The month with the lowest average high temperature is March (25.8°C).

Average low temperature in January:
25°C
Average low temperature in February:
24.8°C
Average low temperature in March:
24.7°C
Average low temperature in April:
25.3°C
Average low temperature in May:
26°C
Average low temperature in June:
26.8°C

Average low temperature in July:
27.1°C
Average low temperature in August:
27.6°C
Average low temperature in September:
27.7°C
Average low temperature in October:
27.5°C
Average low temperature in November:
26.6°C
Average low temperature in December:
25.8°C

The month with the highest average low temperature is September (27.7°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).

Average pressure
Cul-de-Sac, Saint Martin

Average pressure in January:
1016.6mbar
Average pressure in February:
1016.5mbar
Average pressure in March:
1016.1mbar
Average pressure in April:
1015.7mbar
Average pressure in May:
1015.7mbar
Average pressure in June:
1016.6mbar

Average pressure in July:
1016.4mbar
Average pressure in August:
1014.9mbar
Average pressure in September:
1013.4mbar
Average pressure in October:
1012.7mbar
Average pressure in November:
1012.8mbar
Average pressure in December:
1015.2mbar

The months with the highest atmospheric pressure are January and June (1016.6mbar).
The month with the lowest atmospheric pressure is October (1012.7mbar).

Average wind speed
Cul-de-Sac, Saint Martin

Average wind speed in January:
24.5km/h
Average wind speed in February:
24.2km/h
Average wind speed in March:
22.9km/h
Average wind speed in April:
22.6km/h
Average wind speed in May:
22.8km/h
Average wind speed in June:
23.7km/h

Average wind speed in July:
25.6km/h
Average wind speed in August:
24.2km/h
Average wind speed in September:
20.3km/h
Average wind speed in October:
18.9km/h
Average wind speed in November:
20.4km/h
Average wind speed in December:
24.2km/h

The windiest month (with the highest average wind speed) is July (25.6km/h).
The calmest month (with the lowest average wind speed) is October (18.9km/h).

Average humidity
Cul-de-Sac, Saint Martin

The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March and December (75%).

Average rainfall
Cul-de-Sac, Saint Martin

The wettest month (with the highest rainfall) is October (103mm).
The driest month (with the least rainfall) is February (19mm).

Average rainfall days
Cul-de-Sac, Saint Martin

Average rainfall days in January:
18.2 days
Average rainfall days in February:
14.8 days
Average rainfall days in March:
16.3 days
Average rainfall days in April:
19.3 days
Average rainfall days in May:
23.7 days
Average rainfall days in June:
20.4 days

Average rainfall days in July:
25.1 days
Average rainfall days in August:
25.3 days
Average rainfall days in September:
21.7 days
Average rainfall days in October:
22.9 days
Average rainfall days in November:
23.6 days
Average rainfall days in December:
21.5 days

The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is February (14.8 days).

Average daylight / Average sunshine
Cul-de-Sac, Saint Martin

Average daylight in January:
11h and 1min
Average daylight in February:
11h and 4min
Average daylight in March:
12h and 1min
Average daylight in April:
12h and 4min
Average daylight in May:
13h and 0min
Average daylight in June:
13h and 1min

Average daylight in July:
13h and 1min
Average daylight in August:
12h and 4min
Average daylight in September:
12h and 1min
Average daylight in October:
11h and 4min
Average daylight in November:
11h and 2min
Average daylight in December:
11h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

Average sunshine in January:
7h and 2min
Average sunshine in February:
8h and 5min
Average sunshine in March:
8h and 5min
Average sunshine in April:
10h and 0min
Average sunshine in May:
10h and 1min
Average sunshine in June:
10h and 1min

Average sunshine in July:
10h and 1min
Average sunshine in August:
10h and 2min
Average sunshine in September:
9h and 2min
Average sunshine in October:
6h and 4min
Average sunshine in November:
6h and 3min
Average sunshine in December:
6h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

Average sunshine days
Cul-de-Sac, Saint Martin

Average sunshine days in January:
8.3 days
Average sunshine days in February:
9.4 days
Average sunshine days in March:
9.9 days
Average sunshine days in April:
7.1 days
Average sunshine days in May:
3.8 days
Average sunshine days in June:
2.9 days

Average sunshine days in July:
1.8 days
Average sunshine days in August:
1.7 days
Average sunshine days in September:
3.9 days
Average sunshine days in October:
5.3 days
Average sunshine days in November:
4.5 days
Average sunshine days in December:
5.5 days

The month with the most sunshine days is March (9.9 days).
The month with the least sunshine days is August (1.7 days).

Average UV index
Cul-de-Sac, Saint Martin

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

Average cloud cover
Cul-de-Sac, Saint Martin

The months with the most cloud cover are May, June and August (Cloud cover 42).
The months with the least cloud cover are February and March (Cloud cover 34).

Average visibility
Cul-de-Sac, Saint Martin

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).

Climate and monthly weather forecastCul-de-Sac, Saint Martin

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