May weather forecast
Port Royal, Jamaica

May in Port Royal brings an appreciable change in the weather pattern with the commencement of the wet season. The precipitation reaches its first peak at 154mm (6.06"), signaling a departure from the dryer months. Nonetheless, the sea remains warm with temperatures persistently staying well above average. Residents and visitors can prepare for a slight reduction in overall visibility due to increased cloud cover and frequent rainfall events. But the city continues to offer plenty of daylight and hours of sunshine for outdoor fun.

Temperature

May's weather in Port Royal, Jamaica, recording an average high temperature of a still moderately hot 28.7°C (83.7°F), matches that of April. May brings with it a nighttime average temperature of 23.2°C (73.8°F) in Port Royal.

Heat index

The average heat index in May is appraised at a hot 34°C (93.2°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle 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 'real feel' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In May, the average relative humidity in Port Royal is 81%.

Rainfall

In May, the rain falls for 27.5 days. Throughout May, 154mm (6.06") of precipitation is accumulated. In Port Royal, Jamaica, during the entire year, the rain falls for 310.9 days and collects up to 1286mm (50.63") of precipitation.

Sea temperature

In May, the average sea temperature is 28.1°C (82.6°F).
Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations.

Daylight

The average length of the day in May in Port Royal is 12h and 59min.
On the first day of May in Port Royal, sunrise is at 05:40 and sunset at 18:28. On the last day of the month, sunrise is at 05:31 and sunset at 18:39 EST.

Sunshine

In Port Royal, the average sunshine in May is 10.1h.

UV index

The months with the lowest UV index are January through May, November and 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 radiation for ordinary individuals.
Note: During May, 6 as the daily maximum UV index converts into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be attentive! The UV exposure is heightened with reflections from sand and water.