August weather forecast
Port-au-Prince, Haiti

August witnesses a further rise in rainfall in Port-au-Prince, reaching 111mm (4.37"), making it one of the rainiest months of the year. However, despite the increased rainfall, the maximum temperature holds steady at 30.9°C (87.6°F), tying with July for the highest temperature of the year. During this time, the sea temperature reaches its highest point at 29.5°C (85.1°F), offering the perfect conditions for water sports. The city also enjoys 12.7 hours of daylight that showcases the beauty of this Caribbean gem. This period still allows for 6 days of clear skies, offering an excellent opportunity for sunbathers.

Temperature

August, noted for its average high-temperature of 30.9°C (87.6°F) and an average low-temperature of 21.3°C (70.3°F), is considered the warmest month in Port-au-Prince, Haiti.

Heat index

During August, the heat index is estimated at a torrid 39°C (102.2°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in August is 74%.

Rainfall

In Port-au-Prince, in August, it is raining for 22.2 days, with typically 111mm (4.37") of accumulated precipitation. In Port-au-Prince, during the entire year, the rain falls for 227.4 days and collects up to 904mm (35.59") of precipitation.

Sea temperature

In Port-au-Prince, the average seawater temperature in August is 29.5°C (85.1°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in August in Port-au-Prince, Haiti, is 12h and 44min.
On the first day of August, sunrise is at 06:27 and sunset at 19:24. On the last day of the month, sunrise is at 06:34 and sunset at 19:04 EDT.

Sunshine

In Port-au-Prince, the average sunshine in August is 11.2h.

UV index

The months with the lowest UV index in Port-au-Prince are January through May, July through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 in August translates into these instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice! The reflection of water and sand increases the UV radiation significantly.