Mamora Bay
Antigua and Barbuda
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Mamora Bay, Antigua and Barbuda

The first month of the autumn, September, is still a hot month in Mamora Bay, Antigua and Barbuda, 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

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

Rainfall

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

Sea temperature

September is the month with the warmest seawater, with an average sea temperature of 29°C (84.2°F).
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 Mamora Bay, the average length of the day in September is 12.2h.

Sunshine

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

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Mamora Bay. A UV Index reading of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 12 in September transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 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 is the warmest month in Mamora Bay?

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

What is the temperature in September in Mamora Bay?

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

How much does it rain in Mamora Bay in September?

In Mamora Bay, in September, during 16 rainfall days, 140mm (5.51") of precipitation is typically accumulated.

What is the rainiest month in Mamora Bay?

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

What month is the sea warmest in Mamora Bay?

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

What is the sea water temperature in September in Mamora Bay?

In September, the average sea temperature in Mamora Bay 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.

How many hours of daylight does Mamora Bay have in September?

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

What is the month with the least sunshine in Mamora Bay?

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

How long on average sun shines in September in Mamora Bay?

In September, the average sunshine in Mamora Bay is 7h.

What is the month with the highest UV index in Mamora Bay?

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

What is the UV index intensity in September in Mamora Bay?

The average daily maximum UV index in September in Mamora Bay is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Mamora Bay, 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 - Mamora Bay, 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 - Mamora Bay, 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 - Mamora Bay, 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 - Mamora Bay, 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 - Mamora Bay, 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).