May weather forecast
Port-au-Prince, Haiti

Port-au-Prince hears the loudest roars of the rainy season in May, with the highest annual rainfall of 141mm (5.55"), making it the wettest month of the year. Even though the city experiences this substantial increase in rainfall, temperatures continue to climb in May, peaking at 29.1°C (84.4°F), and dipping to a low of 20.6°C (69.1°F) at night. Consequently, the relative humidity increases to 75%, making this month significantly muggy. With a sea temperature of 27.9°C (82.2°F) combined with the overcast skies often lends the city a unique charm. Despite the rain, the city continues to receive 13 hours of daylight, providing ample time to explore.

Temperature

Port-au-Prince ushers in May with an average high-temperature of a still moderately hot 29.1°C (84.4°F), showing a close resemblance to the previous month. Throughout the nights in May, an average low-temperature of 20.6°C (69.1°F) is noted.

Heat index

The heat index value for May is estimated at a tropical 34°C (93.2°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. 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 highly important for children. 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.

Humidity

In May, the average relative humidity in Port-au-Prince is 75%.

Rainfall

The month with the most rainfall in Port-au-Prince, Haiti, is May, when the rain falls for 24.3 days and typically aggregates up to 141mm (5.55") of precipitation.

Sea temperature

In Port-au-Prince, Haiti, the average seawater temperature in May is 27.9°C (82.2°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

In Port-au-Prince, the average length of the day in May is 13h and 1min.
On the first day of May in Port-au-Prince, sunrise is at 06:21 and sunset at 19:11. On the last day of the month, sunrise is at 06:11 and sunset at 19:22 EDT.

Sunshine

The average sunshine in May is 10.6h.

UV index

January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 in May translates into these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be mindful! Sand and water reflections can up the Sun's UV exposure.