August weather forecast
Castle Bruce, Dominica

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Weather in August

August, being the heart of the hurricane season, features the most significant rainfall of the year, escalating up to 99mm (3.9"). Alongside, it also displays the highest average temperatures overall. Wind speeds rather curiously drop to an average of 23.1km/h (14.4mph), leading to humid conditions. August showcases broad daylight and cloud cover maintaining an almost constant pattern. Thus, August typically stands out for its scorching temperatures mixed with substantial downpours, giving it a peculiar weather blend.

Temperature

August's onset sees an average high-temperature of a still warm 28.8°C (83.8°F), exhibiting a slight fluctuation from the previous month. Castle Bruce's nocturnal average in August closely mirrors its daytime temperatures, settling at a still warm 27.4°C (81.3°F).

Heat index

The heat index for August is calculated to be a hot 34°C (93.2°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

July and August, with an average relative humidity of 78%, are the most humid months in Castle Bruce, Dominica.

Rainfall

August is the month with the most rainfall. Rain falls for 22.3 days and accumulates 99mm (3.9") of precipitation.

Sea temperature

In August, the average sea temperature in Castle Bruce is 29°C (84.2°F).
Note: A water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

In August, the average length of the day is 12h and 38min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:35. On the last day of August, in Castle Bruce, sunrise is at 05:52 and sunset at 18:17 AST.

Sunshine

The months with the most sunshine in Castle Bruce are April, August and September, with an average of 10.1h of sunshine.

UV index

The months with the highest UV index in Castle Bruce are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 7 translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat. Watch out! Sand and water enhance the UV exposure you receive.

Frequently asked questions

How hot is it in Castle Bruce in August?

The average high-temperature, in August, in Castle Bruce, is 28.8°C (83.8°F), while the average low-temperature is 27.4°C (81.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 34°C (93.2°F).

What are the most humid months in Castle Bruce?

The months with the highest humidity are July and August, with an average relative humidity of 78%.

What is the average humidity in August in Castle Bruce?

The average relative humidity in August is 78%.

What is the rainiest month in Castle Bruce?

August is the month with the most rainfall in Castle Bruce. Rain falls for 22.3 days and accumulates 99mm (3.9") of precipitation.

How many days does it rain in August in Castle Bruce?

In Castle Bruce, Dominica, during August, the rain falls for 22.3 days and regularly aggregates up to 99mm (3.9") of precipitation.

How warm is the water in August in Castle Bruce?

In Castle Bruce, in August, the average water temperature 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 Castle Bruce have in August?

In August, the average day length in Castle Bruce is 12h and 38min.

When are sunrise and sunset in August in Castle Bruce?

In August, on the first day of the month, sunrise is at 05:47 and sunset at 18:35. On the last day of the month, in Castle Bruce, sunrise is at 05:52 and sunset at 18:17 AST.

What are the months with the most sunshine in Castle Bruce?

The months with the most sunshine are April, August and September, with an average of 10.1h of sunshine.

How long on average sun shines in August in Castle Bruce?

In August, the average sunshine duration in Castle Bruce is 10.1h.

What are the months with the highest UV index in Castle Bruce?

The months with the highest UV index in Castle Bruce, Dominica, are January through December, with an average maximum UV index of 7.

What is the month with the lowest UV index in Castle Bruce?

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index reading in August in Castle Bruce?

In August, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Average temperature in August
Castle Bruce, Dominica

Average temperature in August - Castle Bruce, Dominica
  • Average high temperature in August: 28.8°C

The warmest month (with the highest average high temperature) is September (28.9°C).
The month with the lowest average high temperature is February (26.3°C).

  • Average low temperature in August: 27.4°C

The month with the highest average low temperature is September (27.6°C).
The coldest month (with the lowest average low temperature) is February (24.9°C).

Average pressure in August
Castle Bruce, Dominica

Average pressure in August - Castle Bruce, Dominica
  • Average pressure in August: 1014.1mbar

The month with the highest atmospheric pressure is June (1015.8mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).

Average wind speed in August
Castle Bruce, Dominica

Average wind speed in August - Castle Bruce, Dominica
  • Average wind speed in August: 23.1km/h

The windiest month (with the highest average wind speed) is January (26.6km/h).
The calmest month (with the lowest average wind speed) is October (19.9km/h).

Average humidity in August
Castle Bruce, Dominica

Average humidity in August - Castle Bruce, Dominica
  • Average humidity in August: 78%

The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January, February and March (75%).

Average rainfall in August
Castle Bruce, Dominica

Average rainfall in August - Castle Bruce, Dominica
  • Average rainfall in August: 99mm

The wettest month (with the highest rainfall) is August (99mm).
The driest month (with the least rainfall) is February (28mm).

Average rainfall days in August
Castle Bruce, Dominica

Average rainfall days in August - Castle Bruce, Dominica
  • Average rainfall days in August: 22.3 days

The month with the highest number of rainy days is October (23.1 days).
The month with the least rainy days is March (16.6 days).

Average sea temperature in August
Castle Bruce, Dominica

Average sea temperature in August - Castle Bruce, Dominica
  • Average sea temperature in August: 29°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).

Average daylight in August /
Average sunshine in August
Castle Bruce, Dominica

Average daylight in August / Average sunshine in August - Castle Bruce, Dominica
  • Average daylight in August: 12h and 4min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are April, August and September (Average sunshine: 10h and 6min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

Average sunshine days in August
Castle Bruce, Dominica

Average sunshine days in August - Castle Bruce, Dominica
  • Average sunshine days in August: 3.8 days

The month with the most sunshine days is March (8.1 days).
The months with the least sunshine days are May, June and August (3.8 days).

Average UV index in August
Castle Bruce, Dominica

Average UV index in August - Castle Bruce, Dominica
  • Average UV index in August: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in August
Castle Bruce, Dominica

Average cloud cover in August - Castle Bruce, Dominica
  • Average cloud cover in August: 43

The months with the most cloud cover are June and July (Cloud cover 47).
The month with the least cloud cover is February (Cloud cover 34).

Average visibility in August
Castle Bruce, Dominica

Average visibility in August - Castle Bruce, Dominica
  • Average visibility in August: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Castle Bruce, Dominica

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