July weather forecast
Roseau, Dominica

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A calm, clear waterfront in the valley city of Roseau, Dominica
A calm, clear waterfront in the valley city of Roseau, Dominica

Weather in July

July is a month of heavy rainfall in Roseau, Dominica, marking an annual high of 246mm (9.69"). Despite this, the city’s tropical beauty shines through particularly when the sun breaks through the clouds. The temperature remains comfortably warm, ensuring that outdoor activities continue with minimal disruption. The sea echoes the land’s warmth, offering pleasant waters for all to enjoy. Sunlight forms a crucial part of the day's rhythm, even as the UV index begins to taper off slightly.

Temperature

May through October are known as Roseau's warmest months, with an average high-temperature of 31°C (87.8°F).

Rainfall

In July, in Roseau, Dominica, the rain falls for 21 days. Throughout July, 108mm (4.25") of precipitation is accumulated. Throughout the year, in Roseau, there are 218 rainfall days, and 1996mm (78.58") of precipitation is accumulated.

Sea temperature

In Roseau, in July, the average water temperature is 28°C (82.4°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 July, the average length of the day in Roseau is 12h and 56min.
On the first day of July, sunrise is at 05:38 and sunset at 18:40. On the last day of the month, sunrise is at 05:47 and sunset at 18:36 AST.

Sunshine

March through August, with an average of 8h of sunshine, are months with the most sunshine in Roseau.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 12 during July translates into the following recommendations:
Enforce every vital precaution. Those with light skin could endure burns in a matter of minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Notice! Sand and water reflections contribute to a stronger UV exposure.

Frequently asked questions

What is the warmest month in Roseau?

May through October are identified as the warmest months in Roseau, Dominica, with an average high-temperature of 31°C (87.8°F).

How hot is it in Roseau in July?

The average high-temperature and low-temperature in Roseau during July are 31°C (87.8°F) and 23°C (73.4°F) respectively.

How many days does it rain in July in Roseau?

In Roseau, in July, it is raining for 21 days, with typically 108mm (4.25") of accumulated precipitation.

How warm is the water in July in Roseau?

In Roseau, the average seawater temperature in July is 28°C (82.4°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.

What is the average length of the day in July in Roseau?

The average day length in July is 12h and 56min.

When is the sunrise / sunset in July in Roseau?

In July, on the first day of the month, sunrise is at 05:38 and sunset at 18:40. On the last day of the month, in Roseau, Dominica, sunrise is at 05:47 and sunset at 18:36 AST.

What is the month with the most sunshine in Roseau?

The months with the most sunshine in Roseau are March through August, with an average of 8h of sunshine.

How long on average sun shines in July in Roseau?

In Roseau, the average sunshine duration in July is 8h.

What are the months with the highest UV index in Roseau?

The months with the highest UV index in Roseau, Dominica, are March through September, with an average maximum UV index of 12.

How high is the UV index in July in Roseau?

In July, the average daily maximum UV index in Roseau is 12. A UV Index of 11, and more, symbolizes an extreme health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Roseau, Dominica

Average temperature in July - Roseau, Dominica
  • Average high temperature in July: 31°C

The warmest months (with the highest average high temperature) are May, June, July, August, September and October (31°C).
The months with the lowest average high temperature are January, February and December (29°C).

  • Average low temperature in July: 23°C

The month with the highest average low temperature is August (24°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (21°C).

Average rainfall in July
Roseau, Dominica

Average rainfall in July - Roseau, Dominica
  • Average rainfall in July: 108mm

The wettest month (with the highest rainfall) is November (252mm).
The driest months (with the least rainfall) are February and April (87mm).

Average rainfall days in July
Roseau, Dominica

Average rainfall days in July - Roseau, Dominica
  • Average rainfall days in July: 21 days

The month with the highest number of rainy days is September (23 days).
The months with the least rainy days are February and April (14 days).

Average sea temperature in July
Roseau, Dominica

Average sea temperature in July - Roseau, Dominica
  • Average sea temperature in July: 28°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are February and March (26°C).

Average daylight in July /
Average sunshine in July
Roseau, Dominica

Average daylight in July / Average sunshine in July - Roseau, Dominica
  • Average daylight in July: 12h and 5min

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 July: 8h

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

Average UV index in July
Roseau, Dominica

Average UV index in July - Roseau, Dominica
  • Average UV index in July: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

Roseau, Dominica

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