July weather forecast
Port-au-Prince, Haiti

July sees a marginal decrease in rainfall, dropping down to 89mm (3.5"), and a slight increase in average temperature, setting the pace for the warmest days of the year. The temperature sees a high of 30.8°C (87.4°F) and a low of 21.1°C (70°F) making it the hottest month of the year. Even with these high temperatures, the sea temperature reaches its peak at 29°C (84.2°F), making it incredibly inviting. Despite the heat, there are clear skies for approximately 7.6 days this month as the city experiences 13.1 hours of daylight. Although the wind speed drops to 8.2km/h (5.1mph), it still offers a refreshing breeze during the warmest month.

Temperature

July experiences an average high-temperature of a still tropical 30.8°C (87.4°F), barely different from June's 30.3°C (86.5°F). Port-au-Prince in July anticipates an average nighttime temperature of 21.1°C (70°F).

Heat index

The heat index in July is estimated at a very hot 38°C (100.4°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. 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. 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 hold great significance to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In Port-au-Prince, the average relative humidity in July is 74%.

Rainfall

In Port-au-Prince, in July, during 20.3 rainfall days, 89mm (3.5") of precipitation is typically accumulated. 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 July, the average sea temperature in Port-au-Prince is 29°C (84.2°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

In July, the average length of the day in Port-au-Prince, Haiti, is 13h and 7min.
On the first day of July in Port-au-Prince, sunrise is at 06:16 and sunset at 19:30. On the last day of the month, sunrise is at 06:26 and sunset at 19:24 EDT.

Sunshine

July has the most sunshine of the year, with an average of 11.3h of sunshine.

UV index

January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index in Port-au-Prince, Haiti. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in July, converts into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Attention! The reflection of both water and sand can increase the intensity of UV rays.