Last updated: August 21, 2025
In August, Roseau, Dominica experiences warm tropical weather characterized by a maximum temperature of 29°C (84°F) and an average of 27°C (81°F), with a minimum dipping to 25°C (77°F). This month sees significant rainfall, totaling 109 mm (4.3 in) over 21 days, contributing to the region’s lush greenery. Notably, the humidity hovers around 82%, creating a sultry atmosphere that defines the essence of summer in this Caribbean paradise. Visitors should prepare for both warmth and frequent showers, making it an ideal time for lush landscapes and vibrant plant life.
In August, Roseau, Dominica, experiences its warmest temperatures of the year, with a minimum of 25°C (77°F) and a maximum reaching up to 29°C (84°F). The average temperature hovers around 27°C (81°F), maintaining a comfortable warmth that invites both locals and visitors to enjoy the lush landscapes and vibrant culture. Notably, August marks the peak of warmth, following a gradual increase from the cooler months earlier in the year. As the summer heat intensifies, the tropical charm of Dominica shines, making it an ideal destination for those seeking adventure or relaxation under the sun. This steady rise in temperature from June through August sets a perfect scene for beach outings and exploring the island's stunning natural wonders.
In August, Roseau, Dominica experiences a significant uptick in precipitation, with 109 mm (4.3 in) of rain falling over 21 days. This marks the peak of the rainy season, as the island transitions from the more gradual increases seen in earlier months like July, which recorded 97 mm (3.8 in). The heightened rainfall not only contributes to the lush environment but also sets the stage for even wetter months ahead, including September and October, which follow with 114 mm (4.5 in) and 117 mm (4.6 in), respectively. As the summer wanes, August embodies the tropical rhythm of the Caribbean, where rain becomes a defining characteristic of the landscape.
In August, Roseau, Dominica experiences a notable humidity level of 82%, characteristic of the island's tropical climate. This month typically follows a gradual upward trend, peaking in July at 84% before experiencing a slight decrease in September. Throughout the year, humidity levels remain relatively high, with averages ranging from 77% in February to 84% in July. The steady increase during late spring and summer reflects the island's warm weather, ensuring that August remains a warm and humid time, as residents and visitors alike enjoy the lush, vibrant scenery this climate fosters.
In August, Roseau, Dominica experiences a UV Index of 13, placing it in the extreme exposure category with a burn time of just 10 minutes. This trend of high UV levels continues from the preceding months, as both June and July also recorded an index of 13 and 14 respectively. The consistent pattern of extreme UV exposure underscores the importance of taking protective measures throughout the summer months. As the UV Index begins to decline slightly heading into September and October, the need for vigilance remains crucial. For more detailed information on UV levels throughout the year, check out the Roseau UV Index.
UV Risk Categories
August in Roseau, Dominica, continues to bask in the sunlight with an impressive 347 hours of sunshine, contributing to the island's tropical allure. Following the vibrant month of May, which boasts the most sunshine at 357 hours, August maintains a commendable brightness, marking it as a key part of the summer season. The trend reveals a consistent supply of sunshine from April through August, with hours ranging from 339 to 357, showcasing the island's idyllic climate. As the year transitions into the cooler months, hours of sunlight begin to taper off slightly, yet September and October still promise 319 and 320 hours, ensuring that the tropical charm lingers well into the fall. This sunny disposition throughout the year underscores Roseau's vibrant natural allure, making it a perfect destination for sun-seekers.
In August, the likelihood of sunny weather in Roseau, Dominica stands at 49%, marking it as a transitional month within the yearly climate pattern. This percentage reveals a slight dip from the sunnier months earlier in the year, including a notable 73% in February and a respectable 54% in July. As the summer draws to a close, the chance of sunshine in August falls just below the average, hinting at a shift towards the wetter season. However, the favorable percentage remains higher than the peak rainy months of June, suggesting that locals and visitors can still enjoy a fair share of sun amidst the summer heat. Transitioning into September, the likelihood of clear skies climbs back to 59%, further emphasizing the fluctuating yet often pleasant nature of Roseau's summer weather.
In August, daylight in Roseau, Dominica typically lasts for 12 hours, continuing the trend established in the preceding months. As the summer peaks, the island enjoys a vibrant balance of light, with long, sun-soaked days that encourage outdoor exploration. This duration reflects a steady pattern, with the daylight hours gradually increasing from 11 hours in the early months of the year to a maximum of 13 hours in June, before tapering off slightly as the year progresses. Following August, September likewise maintains the 12-hour daylight mark, showcasing the region's consistent exposure to sunlight, which is a hallmark of its tropical climate. This rhythmic variability not only enhances Roseau’s natural beauty but also enriches the local lifestyle, making each long day an opportunity for adventure and discovery.
In August, the winds of Roseau, Dominica greet islanders with a gentle embrace, averaging 7.1 m/s (16 mph). This represents a softening from the more vigorous gusts that characterize the earlier summer months, as July recorded an average wind speed of 8.7 m/s (19 mph). The trend shows a notable decline in wind intensity as the year progresses into late summer, with August witnessing the lowest speeds of the season, a transition that sets the stage for calmer days leading into autumn. Following August, September experiences a further dip, dropping to 5.3 m/s (12 mph), emphasizing the tranquil essence of the island during this time. Thus, as summer wanes, the winds in Roseau transform from lively breezes to gentle whispers, creating a serene atmosphere perfect for relaxation and reflection.
Weather in Roseau varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Roseau, focusing on differences in temperature, rainfall, humidity, and UV levels.
In August, temperatures are generally warmer with a minimum of 25°C (77°F) and an average of 27°C (81°F), reaching a maximum of 29°C (84°F). The month experiences significant rainfall, totaling 109 mm (4.3 inches) over 21 days, accompanied by high humidity at 82%. In contrast, January offers a slightly cooler climate, with minimum temperatures around 23°C (73°F), an average of 25°C (78°F), and a maximum of 27°C (80°F). Precipitation is notably less during this month, with only 36 mm (1.4 inches) over 13 days, and humidity levels are a bit lower at 78%. For more details on January weather, you can visit Roseau weather in January.
August and February display notable differences in weather patterns. In August, temperatures are generally warmer, with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at 29°C (84°F). This month also experiences higher humidity at 82% and significant rainfall, with 109 mm (4.3 in) spread across 21 days. In contrast, February features slightly cooler temperatures, ranging from a minimum of 22°C (72°F) to a maximum of 26°C (80°F) and an average of 25°C (77°F). The month sees less precipitation, totaling 36 mm (1.4 in) over 13 days, and lower humidity levels at 77%. For more details on February weather, you can visit Roseau weather in February.
In August, the weather is typically warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F). The month sees considerable rainfall, accumulating 109 mm (4.3 in) over 21 days, along with high humidity levels averaging 82%. In contrast, March offers slightly cooler conditions, with temperatures ranging from a low of 23°C (73°F) to a high of 26°C (80°F). Precipitation in March is significantly lower, at 34 mm (1.3 in) over 14 days, and humidity levels are also a touch lower at 78%. For a more detailed look at the weather patterns in March, you can visit Roseau weather in March.
When comparing the weather in April and August, April tends to be slightly cooler with average temperatures ranging from 23°C (74°F) to 27°C (81°F), while August experiences warmer conditions, with temperatures from 25°C (77°F) to 29°C (84°F). Additionally, August is significantly wetter than April, receiving 109 mm (4.3 in) of precipitation over 21 days, compared to just 32 mm (1.3 in) over 12 days in April. Humidity levels are also marginally higher in August at 82% versus 78% in April. For a closer look at April's weather, you can visit Roseau weather in April.
In comparing the weather of August and May, both months experience warm temperatures, with August showing a slight edge with an average of 27°C (81°F) compared to May's 26°C (79°F). The maximum temperatures are similar, with August peaking at 29°C (84°F) and May at 28°C (82°F). However, August is notably wetter, receiving 109 mm (4.3 inches) of precipitation over 21 days, while May sees significantly less rainfall at 35 mm (1.4 inches) over just 10 days. Humidity levels are comparable, with August at 82% and May at 80%. For more detailed insights, you can check Roseau weather in May.
When comparing the weather in June and August, both months feature similar temperature ranges, with June averaging around 27°C (80°F) and August slightly higher at 27°C (81°F). However, August experiences more precipitation, totaling 109 mm (4.3 in) over 21 days, compared to June's 68 mm (2.7 in) over 14 days. Despite the increased rainfall in August, the humidity remains constant at 82% for both months, creating a consistently humid climate. For more details on June weather, you can visit Roseau weather in June.
In comparing the weather between July and August, both months exhibit similar temperature patterns, with August showing a slight increase in maximum and average temperatures. August has an average temperature of 27°C (81°F) and a maximum of 29°C (84°F), while July reaches a maximum of 28°C (83°F) and an average of 27°C (80°F). Precipitation is also slightly higher in August, totaling 109 mm (4.3 in) over 21 days compared to 97 mm (3.8 in) over 20 days in July. Humidity remains relatively high in both months, with August at 82% and July at 84%. For more details on the weather in July, check out Roseau weather in July.
In August, the weather boasts a consistent warmth with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F) and an average temperature of 27°C (81°F). However, this month also experiences significant rainfall, with 109 mm (4.3 in) of precipitation spread over 21 days and humidity levels reaching 82%. In contrast, September mirrors August's temperature profile with similar minimum, average, and maximum temperatures. Nevertheless, it sees a slight increase in precipitation to 114 mm (4.5 in), albeit over just 17 days, and a slight decrease in humidity to 80%. For a detailed overview of weather specifics, you may refer to Roseau weather in September.
August and October share similar temperature profiles, with minimums, averages, and maximums consistently hovering between 25°C (77°F) and 29°C (84°F). However, October experiences slightly increased precipitation, with 117 mm (4.6 in) compared to August's 109 mm (4.3 in), although August has slightly more rain days at 21 compared to October's 20. Humidity levels remain high in both months, with August at 82% and October slightly lower at 80%. For a detailed look at the weather in October, you can check out Roseau weather in October.
In August, the weather is quite warm with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), accompanied by high humidity at 82%. This month also sees substantial rainfall, with 109 mm (4.3 in) over 21 days. In contrast, November offers slightly cooler temperatures, averaging 26°C (80°F), with a minimum of 25°C (76°F) and a maximum of 28°C (82°F). Precipitation decreases to 97 mm (3.8 in) over 20 days, and humidity levels remain relatively high at 80%. While both months share similar temperature ranges, November feels a bit more comfortable and drier. For more details on November weather, you can check Roseau weather in November.
In comparing the weather of August and December, we find that both months enjoy relatively warm temperatures, with August slightly warmer on average, ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), while December sees temperatures from 24°C (75°F) to 28°C (82°F). However, August is notably wetter, receiving 109 mm (4.3 in) of precipitation over 21 days, compared to December's more moderate 53 mm (2.1 in) across 18 days. Humidity levels are fairly similar, with August at 82% and December slightly lower at 79%. For more information about December's climate, you can visit Roseau weather in December.
August in Roseau brings a blend of warmth and humidity, with temperatures generally peaking at a comfortable 29°C (84°F), making it one of the warmer months of the year. While the heat remains enjoyable, this month stands out due to its increased precipitation, as the region experiences about 21 rainy days, adding a lush vibrancy to the landscape. The 82% humidity enhances the tropical atmosphere, keeping the air thick and inviting. Compared to other months, August tends to be wetter, creating an enchanting, albeit damp, experience for both locals and travelers. For more insights into the weather patterns throughout the year, visit Roseau Climate.