Negril
Jamaica
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Negril, Jamaica

Trees and rocks on a beautiful lagoon in Negril, Jamaica, with a clear seascape of the vast waters
Trees and rocks on a beautiful lagoon in Negril, Jamaica, with a clear seascape of the vast waters
September, the first month of the autumn, in Negril, is still a hot month, with average temperature ranging between min 26°C (78.8°F) and max 34°C (93.2°F).

Temperature

July through September, with an average high-temperature of 34°C (93.2°F), are the warmest months.

Rainfall

In Negril, in September, during 14 rainfall days, 229mm (9.02") of precipitation is typically accumulated. In Negril, Jamaica, during the entire year, the rain falls for 127 days and collects up to 1973mm (77.68") of precipitation.

Sea temperature

August and September, with an average sea temperature of 29.8°C (85.6°F), are months with the warmest seawater.
Note: 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.

Daylight

In September, the average length of the day in Negril is 12.2h.

Sunshine

The average sunshine in September is 7h.

UV index

Months with the highest UV index in Negril, Jamaica, are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 12 in September interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the warmest months in Negril?

Warmest months in Negril, Jamaica, are July through September, with an average high-temperature of 34°C (93.2°F).

What is the temperature in September in Negril?

In September, in Negril, Jamaica, the average high-temperature is 34°C (93.2°F), and the average low-temperature is 26°C (78.8°F).

How much does it rain in Negril in September?

In Negril, Jamaica, in September, it is raining for 14 days, with typically 229mm (9.02") of accumulated precipitation.

What are the months with the warmest sea water in Negril?

August and September, with an average sea temperature of 29.8°C (85.6°F), are months with the warmest seawater in Negril, Jamaica.

What is the water temperature in September in Negril?

In September, the average sea temperature in Negril, Jamaica, is 29.8°C (85.6°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.

What is the average length of the day in September in Negril?

In Negril, Jamaica, the average length of the day in September is 12.2h.

How long on average sun shines in September in Negril?

In September, the average sunshine in Negril is 7h.

When is the highest UV index in Negril?

Months with the highest UV index are March through September, with an average maximum UV index of 12.

What is the UV index intensity in September in Negril?

In September, the average daily maximum UV index in Negril, Jamaica, is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in September - Negril, Jamaica
  • Average high temperature in September: 34°C

Warmest months (with the highest average high temperature) are July, August and September (34°C).
Months with the lowest average high temperature are January, February, March and December (32°C).

  • Average low temperature in September: 26°C

Months with the highest average low temperature are May, June, July, August, September and October (26°C).
Coldest months (with the lowest average low temperature) are January and February (23°C).

Average rainfall in September - Negril, Jamaica
  • Average rainfall in September: 229mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the lowest rainfall) is January (58mm).

Average rainfall days in September - Negril, Jamaica
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is October (16 days).
Months with the lowest number of rainy days are February and March (6 days).

Average sea temperature in September - Negril, Jamaica
  • Average sea temperature in September: 29.8°C

Best months for swimming (with the highest average sea temperature) are August and September (29.8°C).
Coldest months (with the lowest average sea temperature) are January and February (26.9°C).

Average daylight in September / Average sunshine in September - Negril, Jamaica
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 7h

Months with most sunshine are February, March, April, July and August (Average sunshine: 8h).
The month with least sunshine is October (Average sunshine: 6h).

Average UV index in September - Negril, Jamaica
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 8).