Castle Bruce Weather in August
During August, Castle Bruce experiences high daytime temperatures of 29°C (84°F) and cooler nights around 26°C (79°F). Expect quite a bit of rainfall. Around 140 mm (5.5 in) is typical.
Rainfall in Castle Bruce in August
Climate statistics over the past 30 years suggest around 20 days of rain, with 140 mm (5.5 in) average for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Castle Bruce in August
In August, Castle Bruce gets high temperatures, with highs of 29°C (84°F). Nights cool to around 26°C (79°F). This kind of day-to-night contrast is typical for this time of year. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Castle Bruce in August
The month enjoys around 240 hours of sunshine, creating mostly sunny days with good weather conditions.If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit Castle Bruce. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Dominica, check out our Castle Bruce's climate page.
Castle Bruce Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Chance of Rain
68%
Precipitation
140 mm (5.5 in)
Rainy days
20 days
Humidity
71% *
Sunshine
240 hours *
Percentage Sunshine
*
Daily Historical Temperatures
42-year average (1976-2025)
Based on our historical records, temperatures in Castle Bruce typically stay consistent throughout August, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in August
Historical weather for Castle Bruce in August
Browse day-by-day weather records for Castle Bruce spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castle Bruce historical weather extremes in August
Our historical data for Castle Bruce spans 2003 to 2025, revealing these weather extremes.
- The warmest day in August was on August 8, 2023, with a maximum of 36°C (97°F).
- Castle Bruce experienced its chilliest August day on August 17, 2007, reaching only 27°C (81°F).
- Castle Bruce registered its coldest August night on August 19, 2019, with temperatures dropping to 20°C (68°F).
Best Places in Dominica in August
Find out more about the weather in Dominica and which places have the best travel conditions in this month. See all of Dominica in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Castle Bruce in August
Warm but pleasant conditions in Castle Bruce in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Castle Bruce in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Dominica, check out our Castle Bruce's climate page.
Temperature Rainfall Sunshine Humidity
See the full Castle Bruce climate overview or explore weather in Dominica.
