DominicaThe weather in September in Roseau
It's hot in September in Roseau with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 33°C. At night, you can expect temperatures between 22°C and 25°C.
Looking for sun? September isn’t a good month to be in Roseau. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Roseau, Dominica. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 36°C in 2023, Roseau reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 28°C.
Water temperature
The water temperature at Roseau is 30°C this month. It’s really warm, perfect for a swim.
Rainfall amount
In September, there is an average of 203 mm of precipitation, spread over 22 days. The wind speed is around 5 Bft, mostly coming from the East.
Daily weather in September for Roseau
Click on any day in September to get detailed info about the usual weather on that day in Roseau. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Roseau | New York | |
|---|---|---|
| Average temperature | 32°C | 27°C |
| Max. temperature | 33°C | 31°C |
| Min. temperature | 22°C | -5°C |
| Total precipitation | 203 mm | 57 mm |
| Rainy days | 22 days | 9 days |
Start of September
The month of September starts in Roseau with hot temps, averaging around 33°C during the day and nights around 24°C.
Mid September
By mid-September, daytime temps stay steady at around 33°C, with nights around 24°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Roseau is around 32°C, while nighttime temps are about 24°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Roseau for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Roseau, Dominica. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Roseau
Temperature in September in Roseau over the years
Precipitation charts
These charts show the average amount of precipitation in September in Roseau, Dominica. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Roseau
Total precipitation in September in Roseau over the years
Daily UV index in September in Roseau
This chart shows the average daily UV index in September in Roseau, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Roseau
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Average weather in Roseau by month
Click on a month below to see detailed weather info for Roseau. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.