September weather forecast
Montego Bay, Jamaica

Entering September, Montego Bay begins to experience a slow departure from the height of Caribbean summer. While temperatures remain high, subtle signs, such as a slight drop in temperatures and sea temperatures, hint towards the upcoming cooler months. Yet, the rainfall takes an upward turn, resulting in increased precipitation around the area. Despite these weather shifts, September still promises plentiful sunshine hours, making the outdoors as tempting as ever. The UV index remains steady at 12, keeping sun protection a priority.

Temperature

September brings a marginal elevation to a still hot 31°C (87.8°F) from August's 32°C (89.6°F) in Montego Bay's average high-temperatures. Throughout the month of September, Montego Bay expects an average low of 23°C (73.4°F).

Rainfall

In Montego Bay, in September, it is raining for 14 days, with typically 229mm (9.02") of accumulated precipitation. In Montego Bay, during the entire year, the rain falls for 128 days and collects up to 1942mm (76.46") of precipitation.

Sea temperature

With an average sea temperature of 29.8°C (85.6°F), September is the month with the warmest seawater.
Note: Water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are pleasurable, without feeling uncomfortable even during extended periods.

Daylight

The average length of the day in September in Montego Bay is 12h and 14min.
On the first day of September in Montego Bay, Jamaica, sunrise is at 05:57 and sunset at 18:25. On the last day of the month, sunrise is at 06:02 and sunset at 18:00 EST.

Sunshine

In September, the average sunshine is 7h.

UV index

The months with the highest UV index in Montego Bay, Jamaica, are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 12 during September, leads to the following recommendations:
Practice every essential safety step. People with fair skin could receive burns in fewer than 5 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. A sunscreen with at least SPF 30 should be used liberally and reapplied frequently on cloudy days, especially after swimming or an outdoor workout. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.