May weather forecastGressier, Haiti
May
Weather in May
May is notable in Gressier's annual weather cycle due to the substantial surge in rainfall amounting to 141mm (5.55"), the year’s highest precipitation. This peak in rainfall is an anomaly when compared to the preceding April and succeeding June. The increasing humidity accompanying this high rainfall sets the tone for a wet, warm May. The extended daylight hours offer plenty of time for indoor activities, as outdoor pursuits might be hampered by the weather. Notably, the sea temperature continues to climb steadily, reflective of the warming trend throughout Haiti's coastal areas.Temperature
Gressier experiences a subtle adjustment in high-temperatures to a still warm 29.1°C (84.4°F) with the onset of May, maintaining near parity with April's 28.9°C (84°F). In May, the temperature in Gressier drops to an average of 20.6°C (69.1°F) at night.Heat index
May's heat index is evaluated at a hot 34°C (93.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In May, the average relative humidity is 75%.Rainfall
The month with the most rainfall in Gressier is May, when the rain falls for 24.3 days and typically aggregates up to 141mm (5.55") of precipitation.Sea temperature
In Gressier, the average seawater temperature in May is 28.2°C (82.8°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 Gressier, the average length of the day in May is 13h and 1min.On the first day of the month, sunrise is at 06:22 and sunset at 19:12. On the last day of May, sunrise is at 06:12 and sunset at 19:23 EDT.
Sunshine
In Gressier, the average sunshine in May is 10.6h.UV index
The months with the lowest UV index are January through May, July through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 6 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less 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. Enhance your sun protection with tightly woven, yet airy clothing. Warning! The reflection of sand and water increases the UV dose.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Gressier, Haiti
- Average high temperature in May: 29.1°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (27.6°C).
- Average low temperature in May: 20.6°C
The months with the highest average low temperature are August and September (21.3°C).
The coldest month (with the lowest average low temperature) is January (18.2°C).
Average pressure in May
Gressier, Haiti
- Average pressure in May: 1014.6mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1012.5mbar).
Average wind speed in May
Gressier, Haiti
- Average wind speed in May: 7.8km/h
The windiest month (with the highest average wind speed) is June (9.2km/h).
The calmest month (with the lowest average wind speed) is September (6.5km/h).
Average humidity in May
Gressier, Haiti
- Average humidity in May: 75%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is February (72%).
Average rainfall in May
Gressier, Haiti
- Average rainfall in May: 141mm
The wettest month (with the highest rainfall) is May (141mm).
The driest month (with the least rainfall) is January (12mm).
Average rainfall days in May
Gressier, Haiti
- Average rainfall days in May: 24.3 days
The months with the highest number of rainy days are April and October (24.4 days).
The month with the least rainy days is January (9.9 days).
Average sea temperature in May
Gressier, Haiti
- Average sea temperature in May: 28.2°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 (26.9°C).
Average daylight in May /
Average sunshine in May
Gressier, Haiti
- Average daylight in May: 13h and 0min
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 0min).
- Average sunshine in May: 10h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 7h and 12min).
Average sunshine days in May
Gressier, Haiti
- Average sunshine days in May: 5.1 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (3.3 days).
Average UV index in May
Gressier, Haiti
- Average UV index in May: 6
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 6).
Average cloud cover in May
Gressier, Haiti
- Average cloud cover in May: 32
The month with the most cloud cover is April (Cloud cover 35).
The month with the least cloud cover is December (Cloud cover 21).
Average visibility in May
Gressier, Haiti
- Average visibility in May: 9km
The months with the highest visibility are February, March and June (10km).
The months with the lowest visibility are January, April, May, July, August, September, October, November and December (9km).





