August weather forecast and climate
Saint-Marc, Haiti

Weather in August

August, the last month of the summer, in Saint-Marc, is another hot month, with average temperature fluctuating between 23.3°C (73.9°F) and 30.4°C (86.7°F).

Temperature

In August, the average high-temperature is essentially the same as in July - a still tropical 30.4°C (86.7°F). The average low-temperature, in Saint-Marc, is 23.3°C (73.9°F).

Heat index

The average heat index in August is appraised at a torrid 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'felt air temperature', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, pregnancy, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity is 77%.

Rainfall

In Saint-Marc, during August, the rain falls for 22.3 days and regularly aggregates up to 97mm (3.82") of precipitation. Throughout the year, there are 219.6 rainfall days, and 736mm (28.98") of precipitation is accumulated.

Sea temperature

In Saint-Marc, the average water temperature is 29.8°C (85.6°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in August is 12.8h.

Sunshine

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

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Saint-Marc. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for average individuals.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in August in Saint-Marc?

The average high-temperature, in August, in Saint-Marc, Haiti, is 30.4°C (86.7°F), while the average low-temperature is 23.3°C (73.9°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is appraised at 38°C (100.4°F).

What is the average humidity in August in Saint-Marc?

In August, the average relative humidity in Saint-Marc, Haiti, is 77%.

How many days does it rain in August in Saint-Marc?

In Saint-Marc, in August, during 22.3 rainfall days, 97mm (3.82") of precipitation is typically accumulated.

What is the water temperature in August in Saint-Marc?

In Saint-Marc, Haiti, in August, the average water temperature is 29.8°C (85.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Saint-Marc have in August?

In August, the average length of the day in Saint-Marc is 12.8h.

What are the months with the most sunshine in Saint-Marc?

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

How long on average sun shines in August in Saint-Marc?

The average sunshine in August in Saint-Marc is 11.3h.

When is the highest UV index in Saint-Marc?

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

What is the UV index intensity in August in Saint-Marc?

The average daily maximum UV index in August in Saint-Marc is 7. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in August
Saint-Marc, Haiti

Average temperature in August - Saint-Marc, Haiti
  • Average high temperature in August: 30.4°C

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).

  • Average low temperature in August: 23.3°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 in August
Saint-Marc, Haiti

Average pressure in August - Saint-Marc, Haiti
  • Average pressure in August: 1014.4mbar

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 in August
Saint-Marc, Haiti

Average wind speed in August - Saint-Marc, Haiti
  • Average wind speed in August: 8km/h

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 in August
Saint-Marc, Haiti

Average humidity in August - Saint-Marc, Haiti
  • Average humidity in August: 77%

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

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Average rainfall in August
Saint-Marc, Haiti

Average rainfall in August - Saint-Marc, Haiti
  • Average rainfall in August: 97mm

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 in August
Saint-Marc, Haiti

Average rainfall days in August - Saint-Marc, Haiti
  • Average rainfall days in August: 22.3 days

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 in August
Saint-Marc, Haiti

Average sea temperature in August - Saint-Marc, Haiti
  • Average sea temperature in August: 29.8°C

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 in August /
Average sunshine in August
Saint-Marc, Haiti

Average daylight in August / Average sunshine in August - Saint-Marc, Haiti
  • Average daylight in August: 12.8h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in August: 11.3h

Months with the most sunshine are July and August (Average sunshine: 11.3h).
Months with the least sunshine are January and February (Average sunshine: 7.2).

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Average sunshine days in August
Saint-Marc, Haiti

Average sunshine days in August - Saint-Marc, Haiti
  • Average sunshine days in August: 5.5 days

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 in August
Saint-Marc, Haiti

Average UV index in August - Saint-Marc, Haiti
  • Average UV index in August: 7

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

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Average cloud cover in August
Saint-Marc, Haiti

Average cloud cover in August - Saint-Marc, Haiti
  • Average cloud cover in August: 23

The month with the most cloud cover is May (Cloud cover 32).
The month with the least cloud cover is December (Cloud cover 18).

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Average visibility in August
Saint-Marc, Haiti

Average visibility in August - Saint-Marc, Haiti
  • Average visibility in August: 10km

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

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