Dominica in september: average Weather, Temperature and Climate, Where to go?
Weather in Dominica in september 2025
Below, check out the weather forecast for the month of september for most popular cities in Dominica. These forecasts are probabilities for september from weather reports for many years. The percentage indicates the possibility of having the weather mentioned.
Average weather in september in Roseau
tolerable weather UV index: 7
Weather at 6am
85°F
Moderate rain at times
37% of time
35%
12%
12%
Weather at 12pm
86°F
Clear/Sunny
33% of time
30%
25%
10%
Weather at 6pm
85°F
Moderate rain at times
29% of time
29%
27%
15%
Weather at 3am
85°F
42%
35%
13%
7%
Where to go in Dominica in september?
Where to go in Dominica in september: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go in Dominica in september when it comes to the weather?
Remember:
The climate in Dominica in september ranges from good to tolerable depending on the region and city.
Although it is not perfect the weather in Dominica that month should be quite good in Berekua and Rosalie. I allows to appreciate tour in these places. And even why not take a little time to take a nap at the pool under the sun!
If you do not go the sun and blue sky, but, for example for cultural tours or hiking, the cities of Saint-Joseph (Dominica), Marigot (Dominica), Roseau and Portsmouth have a quite correct weather for it in september.
Climate in Dominica in september
Climate in Roseau in september
In the month of september, maximum temperature is 86°F and minimum temperature is 85°F (for an average temperature of 85°F). The climate is very warm in this city in this month. With 8.3in over 10 days, rain may occur for your journey. But this is moderate and you will not be too bothered by it.
With a correct climate, september is okay (but not good month) for traveling there in Dominica.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 86°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 86°F | ||
| Rainfall | 8.3in | ||
| Number of days with rainfall | 10 day(s) (32%) | ||
| Humidity | 77% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 36% | ||
| Length of day | 12:13 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Berekua in september
In the month of september, the mean temperature in Berekua is 85°F (maximum temperature is 90°F and minimum temperature is 79°F). The climate quite good there in september. With 7.2in over 9 days, rainfall can happen throughout your holidays. But this is rather reasonably and you will not be too bothered by it.
With good weather conditions, the month of september is a recommended month to go there.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 7.2in | ||
| Number of days with rainfall | 9 day(s) (28%) | ||
| Humidity | 78% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 36% | ||
| Length of day | 12:13 | ||
| Our opinion at whereandwhen.net | good |
Climate in Marigot (Dominica) in september
In the month of september, the mean temperature in Marigot (Dominica) is 85°F (maximum temperature is 85°F and minimum temperature is 83°F). The climate is burning there in this month. With 8.7in over 10 days, rainfall can happen for your journey. But this is reasonably and it will not be continuous.
With a correct weather, september is okay (but not good month) for traveling in this city.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 83°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 8.7in | ||
| Number of days with rainfall | 10 day(s) (32%) | ||
| Humidity | 78% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 39% | ||
| Length of day | 12:12 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Portsmouth in september
In the month of september, maximum temperature is 86°F and minimum temperature is 85°F (for an average temperature of 85°F). The climate is very warm in this city in the month of september. With 8.1in over 9 days, rainfall can happen during your stay. But this is moderate and you will not be too bothered by it.
With a correct climate, september is okay (but not good time) for traveling in Portsmouth.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 86°F | ||
| Lowest temperature | 85°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 8.1in | ||
| Number of days with rainfall | 9 day(s) (30%) | ||
| Humidity | 77% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 38% | ||
| Length of day | 12:13 | ||
| Our opinion at whereandwhen.net | good |
Climate in Rosalie in september
In september, maximum temperature is 90°F and minimum temperature is 79°F (for an average temperature of 85°F). The climate quite good in this city in the month of september. With 7.2in over 9 days, you will experience some showers throughout your stay. But this is pretty reasonably and you will not be too bothered by it.
With a good weather, september is a good time to go there in Dominica.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 79°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 7.2in | ||
| Number of days with rainfall | 9 day(s) (28%) | ||
| Humidity | 78% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 36% | ||
| Length of day | 12:12 | ||
| Our opinion at whereandwhen.net | good |
All cities in Dominica in september
| Roseau in september | tolerable weather |
| Berekua in september | good weather |
| Marigot (Dominica) in september | tolerable weather |
| Portsmouth in september | good weather |
| Rosalie in september | good weather |
| Saint-Joseph (Dominica) in september | good weather |
| Castle Bruce in september | tolerable weather |
| Mahaut in september | tolerable weather |
| Wesley in september | tolerable weather |
Weather data for Dominica in september:
Weather data for Dominica in september is derived from an average of the weather forecast since 2009 in Dominica. There is a margin of error and these forecasts are to be considered as general information only. The weather in Dominica can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Dominica.