August weather forecast
Saint-Marc, Haiti

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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"). While there is a decrease in daylight hours, the ample amount of sunshine hours remain constant, allowing for sufficient time outdoors.

Temperature

The shift into August finds Saint-Marc at an average high-temperature of a still hot 30.4°C (86.7°F), closely comparable to July's conditions. Saint-Marc observes an average low-temperature of 23.3°C (73.9°F) during August.

Heat index

August's mean heat index is estimated at a very hot 38°C (100.4°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in August 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. In Saint-Marc, during the entire year, the rain falls for 219.6 days and collects up to 736mm (28.98") of precipitation.

Sea temperature

In August, the average sea temperature is 29.8°C (85.6°F).
Note: For any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are deemed excellent and extremely satisfying for enduring periods.

Daylight

The average length of the day in August is 12h and 46min.
On the first day of August in Saint-Marc, Haiti, sunrise is at 06:27 and sunset at 19:26. On the last day of the month, sunrise is at 06:35 and sunset at 19:06 EDT.

Sunshine

July and August, with an average of 11.3h of sunshine, are months with the most sunshine.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 7 in August leads to these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.

Frequently asked questions

How hot does it get in Saint-Marc in August?

The average high-temperature and low-temperature during August are 30.4°C (86.7°F) and 23.3°C (73.9°F) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 38°C (100.4°F).

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

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

How much does it rain in Saint-Marc in August?

In Saint-Marc, Haiti, during August, the rain falls for 22.3 days and regularly aggregates up to 97mm (3.82") of precipitation.

How warm is the water in August in Saint-Marc?

In August, the average sea temperature in Saint-Marc 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.

What is the average length of the day in August in Saint-Marc?

In August, the average day length in Saint-Marc is 12h and 46min.

When are sunrise and sunset in August in Saint-Marc?

On the first day of August, sunrise is at 06:27 and sunset at 19:26. On the last day of the month, sunrise is at 06:35 and sunset at 19:06 EDT.

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

The months with the most sunshine are July and August, with an average of 11.3h of sunshine.

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

In August, the average sunshine duration is 11.3h.

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 UV index reading in August in Saint-Marc?

In August, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

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).

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).

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).

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%).
The months with the lowest relative humidity are March and April (74%).

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).

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).

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).

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: 12h and 5min

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).

  • Average sunshine in August: 11h and 2min

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).

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).

Average UV index in August
Saint-Marc, Haiti

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

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).

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).

Average visibility in August
Saint-Marc, Haiti

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

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).

Saint-Marc, Haiti

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