September weather forecast and climate
Jolly Harbour, Antigua and Barbuda

What are the warmest months in Jolly Harbour?

Warmest months in Jolly Harbour, Antigua and Barbuda, are July through September, with an average high-temperature of 31°C (87.8°F).

What is the temperature in September in Jolly Harbour?

In September, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 25°C (77°F).

How many days does it rain in September in Jolly Harbour?

In Jolly Harbour, Antigua and Barbuda, during September, the rain falls for 17 days and regularly aggregates up to 140mm (5.5") of precipitation.

What is the rainiest month in Jolly Harbour?

The month with the most rainfall in Jolly Harbour is September when the rain falls for 17 days and typically aggregates up to 140mm (5.5") of precipitation.

What is the month with the warmest sea water in Jolly Harbour?

Month with the warmest seawater in Jolly Harbour, Antigua and Barbuda, is September, with an average sea temperature of 29°C (84.2°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 water temperature in September in Jolly Harbour?

The average seawater temperature, in September, in Jolly Harbour, is 29°C (84.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
Average temperature in September - Jolly Harbour, Antigua and Barbuda
  • Average high temperature in September: 31°C

Warmest months (with the highest average high temperature) are July, August and September (31°C).
Months with the lowest average high temperature are January and February (28°C).

  • Average low temperature in September: 25°C

Months with the highest average low temperature are June, July, August and September (25°C).
Coldest months (with the lowest average low temperature) are January, February and March (22°C).

Average rainfall in September - Jolly Harbour, Antigua and Barbuda
  • Average rainfall in September: 140mm

The wettest month (with the highest rainfall) is September (140mm).
The driest month (with the lowest rainfall) is February (37mm).

Average rainfall days in September - Jolly Harbour, Antigua and Barbuda
  • Average rainfall days in September: 17 days

Months with the highest number of rainy days are September, October, November and December (17 days).
The month with the lowest number of rainy days is April (11 days).

Average sea temperature in September - Jolly Harbour, Antigua and Barbuda
  • Average sea temperature in September: 29°C

The best month for swimming (with the highest average sea temperature) is September (29°C).
Coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).

Average daylight in September / Average sunshine in September - Jolly Harbour, Antigua and Barbuda
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.1h).
The month with shortest days is December (Average daylight: 11.1h).

  • Average sunshine in September: 7h

Months with most sunshine are January, February, March, April, May, June, July and August (Average sunshine: 8h).
Months with least sunshine are September, October, November and December (Average sunshine: 7).

Average UV index in September - Jolly Harbour, Antigua and Barbuda
  • 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).

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