October weather forecast
Port Royal, Jamaica

October brings a marked shift in weather patterns for Port Royal with rainfall beginning to recede but remaining substantial at 184mm (7.24"). Simultaneously, the temperatures also display a soft downward trend, paving the way for the impending cooler months. However, the sea retains its warmth, providing the city with an extended summer ambiance. Winds tend to relax, and visibility improves to an extent. However, residents and visitors can still enjoy abundant daylight and sunshine, despite the slight weather transition.

Temperature

Port Royal records an average high-temperature of a moderately hot 29.2°C (84.6°F) in October, maintaining a close correlation with September's 30.1°C (86.2°F). During October, the nighttime temperature averages of 24°C (75.2°F).

Heat index

October's mean heat index is appraised at a sweltering 36°C (96.8°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular importance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

With an average relative humidity of 82%, October is the most humid month in Port Royal.

Rainfall

October is the month with the most rainfall in Port Royal. Rain falls for 28.7 days and accumulates 184mm (7.24") of precipitation.

Sea temperature

In October, the average sea temperature is 29.3°C (84.7°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

The average length of the day in October in Port Royal is 11h and 44min.
On the first day of October, sunrise is at 05:57 and sunset at 17:55. On the last day of the month, sunrise is at 06:06 and sunset at 17:35 EST.

Sunshine

In October, the average sunshine in Port Royal is 7.2h.

UV index

The months with the highest UV index in Port Royal are June through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 in October converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Warning! The Sun's UV rays intensify with reflections from sand and water.