Port Royal
Jamaica
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Port Royal, Jamaica

The best months for a swim in Port Royal, Jamaica, are January through December, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.
The ideal sea water temperature of 27.1°C (80.8°F) make January the best time for swimming and other water activities in Port Royal, Jamaica. In Port Royal, the average seawater temperature is 27.1°C (80.8°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in January »

The ideal sea water temperature of 26.9°C (80.4°F) make February the best time for swimming and other water activities in Port Royal, Jamaica. The month with the coldest seawater is February, with an average sea temperature of 26.9°C (80.4°F). Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. Weather in February »

The ideal sea water temperature of 27.3°C (81.1°F) make March the best time for swimming and other water activities in Port Royal, Jamaica. In March, the average sea temperature is 27.3°C (81.1°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in March »

The ideal sea water temperature of 27.7°C (81.9°F) make April the best time for swimming and other water activities in Port Royal, Jamaica. In Port Royal, the average seawater temperature is 27.7°C (81.9°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in April »

The ideal sea water temperature of 28.1°C (82.6°F) make May the best time for swimming and other water activities in Port Royal, Jamaica. In May, the average sea temperature is 28.1°C (82.6°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in May »

The ideal sea water temperature of 28.4°C (83.1°F) make June the best time for swimming and other water activities in Port Royal, Jamaica. In Port Royal, in June, the average water temperature is 28.4°C (83.1°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in June »

The ideal sea water temperature of 28.8°C (83.8°F) make July the best time for swimming and other water activities in Port Royal, Jamaica. In Port Royal, the average seawater temperature is 28.8°C (83.8°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in July »

The ideal sea water temperature of 29.4°C (84.9°F) make August the best time for swimming and other water activities in Port Royal, Jamaica. In August, the average sea temperature is 29.4°C (84.9°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in August »

The ideal sea water temperature of 29.5°C (85.1°F) make September the best time for swimming and other water activities in Port Royal, Jamaica. With an average sea temperature of 29.5°C (85.1°F), September is the month with the warmest seawater. Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in September »

The ideal sea water temperature of 29.3°C (84.7°F) make October the best time for swimming and other water activities in Port Royal, Jamaica. In October, the average sea temperature is 29.3°C (84.7°F). Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. Weather in October »

The ideal sea water temperature of 28.9°C (84°F) make November the best time for swimming and other water activities in Port Royal, Jamaica. In November, the average sea temperature is 28.9°C (84°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in November »

The ideal sea water temperature of 28.3°C (82.9°F) make December the best time for swimming and other water activities in Port Royal, Jamaica. In Port Royal, the average seawater temperature is 28.3°C (82.9°F). Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable. Weather in December »

What month is the sea coldest in Port Royal?

February is the month with the coldest seawater in Port Royal, Jamaica, with an average sea temperature of 26.9°C (80.4°F).

When are the longest days in Port Royal?

The month with the longest days in Port Royal is June, with an average of 13.2h of daylight.

What is the month with the warmest sea water in Port Royal?

The month with the warmest seawater in Port Royal is September, with an average sea temperature of 29.5°C (85.1°F).

What is the month with the shortest days in Port Royal?

The month with the shortest days is December, with an average of 11.1h of daylight.
Average sea temperature - Port Royal, Jamaica

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 - Port Royal, Jamaica

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11.1h).