May weather forecast
Portmore, Jamaica

englishespañol中文
Share

Weather in May

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.

Frequently asked questions

How hot is May in Portmore?

In Portmore, 28.7°C (83.7°F) is the average high-temperature and 23.2°C (73.8°F) is the average low-temperature during May. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in May is appraised at 34°C (93.2°F).

What is the average humidity in May in Portmore?

In May, the average relative humidity is 81%.

How much does it rain in Portmore in May?

In Portmore, in May, during 27.5 rainfall days, 154mm (6.06") of precipitation is typically accumulated.

How warm is the water in May in Portmore?

In Portmore, Jamaica, in May, the average water temperature is 28.1°C (82.6°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Portmore have in May?

In May, the average day length in Portmore is 12h and 59min.

What time are sunrise and sunset in May in Portmore?

In May, on the first day of the month, sunrise is at 05:40 and sunset at 18:28. On the last day of the month, in Portmore, Jamaica, sunrise is at 05:31 and sunset at 18:39 EST.

How many hours of sunshine does Portmore have in May?

In May, the average sunshine duration in Portmore, Jamaica, is 10.1h.

When is the lowest UV index in Portmore?

The months with the lowest UV index in Portmore are January through May, November and December, with an average maximum UV index of 6.

What is the UV index reading in May in Portmore?

In May, the average daily maximum UV index in Portmore is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in May
Portmore, Jamaica

Average temperature in May - Portmore, Jamaica
  • Average high temperature in May: 28.7°C

The warmest month (with the highest average high temperature) is August (30.3°C).
The months with the lowest average high temperature are January and February (27.3°C).

  • Average low temperature in May: 23.2°C

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is February (21.6°C).

Average pressure in May
Portmore, Jamaica

Average pressure in May - Portmore, Jamaica
  • Average pressure in May: 1013.6mbar

The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).

Average wind speed in May
Portmore, Jamaica

Average wind speed in May - Portmore, Jamaica
  • Average wind speed in May: 10.8km/h

The windiest month (with the highest average wind speed) is June (12.8km/h).
The calmest month (with the lowest average wind speed) is November (8.6km/h).

Average humidity in May
Portmore, Jamaica

Average humidity in May - Portmore, Jamaica
  • Average humidity in May: 81%

The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is March (78%).

Average rainfall in May
Portmore, Jamaica

Average rainfall in May - Portmore, Jamaica
  • Average rainfall in May: 154mm

The wettest month (with the highest rainfall) is October (184mm).
The driest month (with the least rainfall) is February (44mm).

Average rainfall days in May
Portmore, Jamaica

Average rainfall days in May - Portmore, Jamaica
  • Average rainfall days in May: 27.5 days

The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is February (22.1 days).

Average sea temperature in May
Portmore, Jamaica

Average sea temperature in May - Portmore, Jamaica
  • Average sea temperature in May: 28.1°C

The best month for swimming (with the highest average sea temperature) is September (29.5°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).

Average daylight in May /
Average sunshine in May
Portmore, Jamaica

Average daylight in May / Average sunshine in May - Portmore, Jamaica
  • Average daylight in May: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in May: 10h and 1min

The months with the most sunshine are August and September (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in May
Portmore, Jamaica

Average sunshine days in May - Portmore, Jamaica
  • Average sunshine days in May: 1.6 days

The month with the most sunshine days is January (3.4 days).
The month with the least sunshine days is August (0.3 days).

Average UV index in May
Portmore, Jamaica

Average UV index in May - Portmore, Jamaica
  • Average UV index in May: 6

The months with the highest UV index are June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, November and December (UV index 6).

Average cloud cover in May
Portmore, Jamaica

Average cloud cover in May - Portmore, Jamaica
  • Average cloud cover in May: 38

The month with the most cloud cover is June (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in May
Portmore, Jamaica

Average visibility in May - Portmore, Jamaica
  • Average visibility in May: 9km

The months with the highest visibility are January, February, March, April, June, July, November and December (10km).
The months with the lowest visibility are May, August, September and October (9km).

Portmore, Jamaica

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location