July weather forecast
Marigot Bay, Saint Lucia

July is marked by a continuation of the wet season characterized by frequent rainfall amounting to a substantial 74mm (2.91") over 26.5 days in the month. At the same time, the temperatures peak, with July boasting the highest average temperature in the first half of the year at 29.4°C (84.9°F). These sultry conditions don't deter watersports activities, bolstered by the equally warm sea temperatures. The daylight hours, too, offer the maximum time for sightseeing, despite the increased cloud cover. All in all, July showcases the tropical weather of Marigot Bay in all its intensity, with warm, wet, and humid conditions.

Temperature

The transition from June to July in Marigot Bay sees average high-temperatures adjusting to a still moderately hot 29.4°C (84.9°F), from a not significantly different 29.3°C (84.7°F). Marigot Bay encounters an average temperature dip to a still moderately hot 26.8°C (80.2°F) throughout July, subtly lower than its daytime maximum.

Heat index

The heat index value for July is calculated to be a sweltering 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

May through August and November, with an average relative humidity of 75%, are the most humid months in Marigot Bay.

Rainfall

In Marigot Bay, during July, the rain falls for 26.5 days and regularly aggregates up to 74mm (2.91") of precipitation. Throughout the year, in Marigot Bay, there are 255.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.

Sea temperature

In July, the average sea temperature in Marigot Bay is 28°C (82.4°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

The average length of the day in July is 12h and 52min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:36. On the last day of July, in Marigot Bay, sunrise is at 05:48 and sunset at 18:32 AST.

Sunshine

In Marigot Bay, the average sunshine in July is 9.3h.

UV index

The months with the highest UV index are January through May, July through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during July translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Alert! UV radiation becomes sharper due to reflections from sand and water.