English Harbour
Antigua and Barbuda
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
English Harbour, Antigua and Barbuda

September, the first month of the autumn, in English Harbour, is still a tropical month, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 25°C (77°F).

Temperature

The warmest months are July through September, with an average high-temperature of 31°C (87.8°F).

Rainfall

September is the month with the most rainfall. Rain falls for 16 days and accumulates 140mm (5.51") of precipitation.

Sea temperature

With an average sea temperature of 29°C (84.2°F), September is the month with the warmest seawater in English Harbour.
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.

Daylight

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

Sunshine

Months with the least sunshine are September through December, with an average of 7h of sunshine.

UV index

Months with the highest UV index in English Harbour are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 12 translate into the following recommendations:
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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 English Harbour?

July through September, with an average high-temperature of 31°C (87.8°F), are warmest months in English Harbour.

What is the temperature in September in English Harbour?

In September, in English Harbour, 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 English Harbour?

In September, in English Harbour, the rain falls for 16 days. Throughout September, 140mm (5.51") of precipitation is accumulated.

What is the rainiest month in English Harbour?

The month with the most rainfall in English Harbour is September when the rain falls for 16 days and typically aggregates up to 140mm (5.51") of precipitation.

When is the sea warmest in English Harbour?

With an average sea temperature of 29°C (84.2°F), September is the month with the warmest seawater in English Harbour.

How warm is the water in September in English Harbour?

In September, the average sea temperature in English Harbour, Antigua and Barbuda, is 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 average length of the day in September in English Harbour?

The average length of the day in September is 12.2h.

What is the month with the least sunshine in English Harbour?

Months with the least sunshine in English Harbour, Antigua and Barbuda, are September through December, with an average of 7h of sunshine.

How long on average sun shines in September in English Harbour?

The average sunshine in September is 7h.

What are the months with the highest UV index in English Harbour?

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

What is the UV index reading in September in English Harbour?

In English Harbour, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in September - English 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 - English 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 - English Harbour, Antigua and Barbuda
  • Average rainfall days in September: 16 days

The month with the highest number of rainy days is October (20 days).
The month with the lowest number of rainy days is June (12 days).

Average sea temperature in September - English 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 - English 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 - English 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).