May weather forecast
Black River, Jamaica

In May, the pre-summer warm up is evident in Black River. Temperatures rise from 20.8°C (69.4°F), reaching a new high of 28.5°C (83.3°F). A distinguishing feature of this month is the sudden sharp surge in rainfall, escalating to a hefty 174mm (6.85"). Meanwhile, daylight hours reach their first yearly peak. This plays in favour of sunshine hours which subsequently increases, conjuring the most favourable conditions for outdoor activities.

Temperature

The arrival of May in Black River brings an average high-temperature of a still moderately hot 28.5°C (83.3°F), nearly identical to April's 28.4°C (83.1°F). Black River's nights in May experience an average temperature drop to an agreeable 20.8°C (69.4°F).

Heat index

For May, the heat index is estimated at a tropical 34°C (93.2°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

In Black River, the average relative humidity in May is 84%.

Rainfall

In Black River, during May, the rain falls for 27.7 days and regularly aggregates up to 174mm (6.85") of precipitation. In Black River, Jamaica, during the entire year, the rain falls for 297.9 days and collects up to 1472mm (57.95") of precipitation.

Sea temperature

In Black River, the average seawater temperature in May is 28.3°C (82.9°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.

Daylight

The average length of the day in May is 12h and 59min.
On the first day of May in Black River, sunrise is at 05:44 and sunset at 18:32. On the last day of the month, sunrise is at 05:35 and sunset at 18:43 EST.

Sunshine

The average sunshine in May in Black River is 9.3h.

UV index

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 in May translates into these instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Alert! Sand and water increase UV exposure due to their reflective properties.