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

August weather forecast and climate
Jolly Harbour, Antigua and Barbuda

August, the last month of the summer, in Jolly Harbour, is another tropical month, with temperature in the range of an average low of 25°C (77°F) and an average high of 31°C (87.8°F).

Temperature

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

Rainfall

In Jolly Harbour, Antigua and Barbuda, during 16 rainfall days, 124mm (4.88") of precipitation is typically accumulated. In Jolly Harbour, during the entire year, the rain falls for 180 days and collects up to 1040mm (40.94") of precipitation.

Sea temperature

In August, the average sea temperature is 28°C (82.4°F).
Note: 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.

Daylight

The average length of the day in August is 12.7h.

Sunshine

Months with the most sunshine are January through August, with an average of 8h of sunshine.

UV index

Months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 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 August in Jolly Harbour?

In Jolly Harbour, in August, 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 Jolly Harbour in August?

In Jolly Harbour, Antigua and Barbuda, during August, the rain falls for 16 days and regularly aggregates up to 124mm (4.88") of precipitation.

How warm is the water in August in Jolly Harbour?

In Jolly Harbour, Antigua and Barbuda, in August, the average water temperature is 28°C (82.4°F). 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.

How many hours of daylight does Jolly Harbour have in August?

In August, the average length of the day in Jolly Harbour, Antigua and Barbuda, is 12.7h.

What are the months with the most sunshine in Jolly Harbour?

Months with the most sunshine are January through August, with an average of 8h of sunshine.

How many hours of sunshine does Jolly Harbour have in August?

The average sunshine in August in Jolly Harbour is 8h.

When is the highest UV index in Jolly Harbour?

Months with the highest UV index in Jolly Harbour, Antigua and Barbuda, are March through September, with an average maximum UV index of 12.

What is the UV index intensity in August in Jolly Harbour?

In Jolly Harbour, the average daily maximum UV index in August is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in August - Jolly Harbour, Antigua and Barbuda
  • Average high temperature in August: 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 August: 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 August - Jolly Harbour, Antigua and Barbuda
  • Average rainfall in August: 124mm

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

Average rainfall days in August - Jolly Harbour, Antigua and Barbuda
  • Average rainfall days in August: 16 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 August - Jolly Harbour, Antigua and Barbuda
  • Average sea temperature in August: 28°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 August / Average sunshine in August - Jolly Harbour, Antigua and Barbuda
  • Average daylight in August: 12.7h

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 August: 8h

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