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
The initiation of September records an average high-temperature of a still hot 30.3°C (86.5°F), displaying a near consistency with the previous month. El Llano reports an average nighttime low-temperature of 23.2°C (73.8°F) in September.Heat index
For September, the heat index is calculated to be a fiery hot 39°C (102.2°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The months with the highest humidity in El Llano are September through December, with an average relative humidity of 81%.Rainfall
In El Llano, in September, during 15.8 rainfall days, 47mm (1.85") of precipitation is typically accumulated. Throughout the year, in El Llano, Dominican Republic, there are 168.6 rainfall days, and 443mm (17.44") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 06:27 and sunset at 18:55. On the last day of September, in El Llano, sunrise is at 06:31 and sunset at 18:30 AST.
Sunshine
The months with the most sunshine are September and November, with an average of 9.4h of sunshine.UV index
May through July, September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 7 during September translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot does it get in El Llano in September?
What are the most humid months in El Llano?
What is the average humidity in September in El Llano?
How many days does it rain in September in El Llano?
How many hours of daylight does El Llano have in September?
What time are sunrise and sunset in September in El Llano?
What are the months with the most sunshine in El Llano?
How long on average sun shines in September in El Llano?
When is the highest UV index in El Llano?
What is the UV index reading in September in El Llano?
Average temperature in September
El Llano, Dominican Republic
- Average high temperature in September: 30.3°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (27.6°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is August (23.7°C).
The coldest month (with the lowest average low temperature) is February (20.2°C).
Average pressure in September
El Llano, Dominican Republic
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is January (1016.7mbar).
The month with the lowest atmospheric pressure is October (1012.6mbar).
Average wind speed in September
El Llano, Dominican Republic
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is October (8.5km/h).
Average humidity in September
El Llano, Dominican Republic
- Average humidity in September: 81%
The months with the highest relative humidity are September, October, November and December (81%).
The month with the lowest relative humidity is March (77%).
Average rainfall in September
El Llano, Dominican Republic
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is August (86mm).
The driest month (with the least rainfall) is January (9mm).
Average rainfall days in September
El Llano, Dominican Republic
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (7.3 days).
Average daylight in September /
Average sunshine in September
El Llano, Dominican Republic
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are September and November (Average sunshine: 9h and 24min).
The month with the least sunshine is May (Average sunshine: 8h and 42min).
Average sunshine days in September
El Llano, Dominican Republic
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in September
El Llano, Dominican Republic
- Average UV index in September: 7
The months with the highest UV index are May, June, July, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, August, November and December (UV index 6).
Average cloud cover in September
El Llano, Dominican Republic
- Average cloud cover in September: 25
The month with the most cloud cover is May (Cloud cover 35).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in September
El Llano, Dominican Republic
- Average visibility in September: 9km
The months with the highest visibility are February, March, November and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September and October (9km).
El Llano, Dominican Republic
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