Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
During August through October, Rosalie experiences its peak temperatures, averaging a high-temperature of 28.6°C (83.5°F).Heat index
September's heat index is calculated to be a tropical 33°C (91.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.The heat index's values are generally associated with conditions in shade and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in September in Rosalie, Dominica, is 76%.Rainfall
In Rosalie, Dominica, during September, the rain falls for 19.7 days and regularly aggregates up to 70mm (2.76") of precipitation. In Rosalie, Dominica, during the entire year, the rain falls for 221.9 days and collects up to 570mm (22.44") of precipitation.Daylight
In Rosalie, the average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 05:52 and sunset at 18:17. On the last day of September, sunrise is at 05:54 and sunset at 17:54 AST.
Sunshine
The average sunshine in September is 10.2h.UV index
The months with the highest UV index in Rosalie are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 7 in September translates into these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the hottest time of year in Rosalie?
Is it hot in Rosalie during September?
What is the average humidity in September in Rosalie?
How many days does it rain in September in Rosalie?
What is the average length of the day in September in Rosalie?
When are sunrise and sunset in September in Rosalie?
How many hours of sunshine does Rosalie have in September?
What are the months with the highest UV index in Rosalie?
When is the lowest UV index in Rosalie?
What is the UV index reading in September in Rosalie?
Average temperature in September
Rosalie, Dominica
- Average high temperature in September: 28.6°C
The warmest months (with the highest average high temperature) are August, September and October (28.6°C).
The months with the lowest average high temperature are February and March (26.3°C).
- Average low temperature in September: 27.1°C
The month with the highest average low temperature is September (27.1°C).
The coldest month (with the lowest average low temperature) is March (24.1°C).
Average pressure in September
Rosalie, Dominica
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is June (1015.6mbar).
The month with the lowest atmospheric pressure is November (1012.1mbar).
Average wind speed in September
Rosalie, Dominica
- Average wind speed in September: 20.4km/h
The windiest month (with the highest average wind speed) is January (27.2km/h).
The calmest month (with the lowest average wind speed) is October (20.2km/h).
Average humidity in September
Rosalie, Dominica
- Average humidity in September: 76%
The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January, February and March (75%).
Average rainfall in September
Rosalie, Dominica
- Average rainfall in September: 70mm
The wettest month (with the highest rainfall) is August (78mm).
The driest month (with the least rainfall) is February (20mm).
Average rainfall days in September
Rosalie, Dominica
- Average rainfall days in September: 19.7 days
The month with the highest number of rainy days is October (21.5 days).
The month with the least rainy days is June (14.8 days).
Average daylight in September /
Average sunshine in September
Rosalie, Dominica
- Average daylight in September: 12h and 1min
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 September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Rosalie, Dominica
- Average sunshine days in September: 7.3 days
The month with the most sunshine days is March (9.8 days).
The month with the least sunshine days is April (5.9 days).
Average UV index in September
Rosalie, Dominica
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Rosalie, Dominica
- Average cloud cover in September: 36
The months with the most cloud cover are June and July (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 33).
Average visibility in September
Rosalie, Dominica
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Rosalie, Dominica
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