May weather forecast
Kingston, Jamaica

May brings the onset of the rainy season in Kingston, with some of the highest rainfall measurements of the year. The increased rainfall at 100mm (3.94") is coupled with a hike in both daytime and night temperatures, signifying the escalation towards summer heat. Sunlight hours extend, providing ample time for daytime activities even with frequent showers. The trend of increasing rainfall and temperatures continues into June.

Temperature

May's onset in Kingston records a minor alteration in the average high-temperature to a still hot 31.6°C (88.9°F) from April's 31.1°C (88°F). In May, Kingston experiences an average nighttime temperature of 23.6°C (74.5°F).

Heat index

The heat index in May is evaluated at an extremely hot 41°C (105.8°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 are particularly relevant to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Kingston, the average relative humidity in May is 74%.

Rainfall

In Kingston, during May, the rain falls for 8 days and regularly aggregates up to 100mm (3.94") of precipitation. Throughout the year, in Kingston, there are 93 rainfall days, and 813mm (32.01") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Kingston is 28.1°C (82.6°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.

Daylight

In Kingston, the average length of the day in May is 12h and 59min.
On the first day of May, sunrise is at 05:40 and sunset at 18:28. On the last day of the month, sunrise is at 05:30 and sunset at 18:39 EST.

Sunshine

In Kingston, the average sunshine in May is 8.2h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 in May transforms into the following instructions:
Execute all vital precautions. Preventing sun damage is of utmost importance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Apply liberally and reapply a broad-spectrum sunscreen of SPF 30+ every two hours, and promptly after any outdoor workout or a swim. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.