May weather forecast
Portmore, Jamaica

In May, Portmore, Jamaica witnesses a significant rise in the quantity of rainfall, reaching as much as 154mm (6.06"), rendering it the month with the highest rainfall so far in the year. It marks the transition from spring to summer, with temperatures rising steadily, hinting at the onset of the approaching warmer months. The persistent rain showers result in a lush, green environment, enhancing the scenic beauty of the city. Despite the intense rainfall, the warm temperature, coupled with relative humidity, creates a tropical climate that Portmore is renowned for. While the evenings can be pleasantly warm, it is advisable for tourists to carry rain gear for outdoor activities.

Temperature

With May's arrival, Portmore notes an average high-temperature of a still warm 28.7°C (83.7°F), maintaining the same temperature as the preceding month. Portmore observes an average nighttime low-temperature of 23.2°C (73.8°F) during the month of May.

Heat index

The heat index value during May is appraised at a hot 34°C (93.2°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

The average relative humidity in May in Portmore is 81%.

Rainfall

In May, in Portmore, the rain falls for 27.5 days. Throughout May, 154mm (6.06") of precipitation is accumulated. In Portmore, 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 in Portmore, Jamaica, is 28.1°C (82.6°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

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

Sunshine

The average sunshine in May in Portmore, Jamaica, is 10.1h.

UV index

January through May, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Caution! Sand and water reflections can notably increase the UV radiation intensity.