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
September
Weather in September
Temperature
With September's advent, San Juan de la Maguana sees an average high-temperature of a still warm 27.8°C (82°F), subtly shifted from August's 28.6°C (83.5°F). San Juan de la Maguana records an average low of 18°C (64.4°F) throughout the nights in September.Heat index
For September, the heat index is estimated at a hot 31°C (87.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 primarily vital for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In San Juan de la Maguana, the average relative humidity in September is 78%.Rainfall
September is the month with the most rainfall. Rain falls for 27 days and accumulates 162mm (6.38") of precipitation.Daylight
In San Juan de la Maguana, the average length of the day in September is 12h and 14min.On the first day of September in San Juan de la Maguana, sunrise is at 06:30 and sunset at 18:59. On the last day of the month, sunrise is at 06:35 and sunset at 18:33 AST.
Sunshine
The average sunshine in September is 9.3h.UV index
The months with the highest UV index in San Juan de la Maguana are March through October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 6 suggests this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the wettest month?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does San Juan de la Maguana have in September?
What is the month with the highest UV index in San Juan de la Maguana?
How high is the UV index in September?
Average temperature in September
San Juan de la Maguana, Dominican Republic
- Average high temperature in September: 27.8°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (25.8°C).
- Average low temperature in September: 18°C
The month with the highest average low temperature is August (18.2°C).
The coldest month (with the lowest average low temperature) is January (15°C).
Average pressure in September
San Juan de la Maguana, Dominican Republic
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is January (1016.9mbar).
The month with the lowest atmospheric pressure is October (1012.9mbar).
Average wind speed in September
San Juan de la Maguana, Dominican Republic
- Average wind speed in September: 6km/h
The windiest month (with the highest average wind speed) is July (8.5km/h).
The calmest month (with the lowest average wind speed) is November (5.2km/h).
Average humidity in September
San Juan de la Maguana, Dominican Republic
- Average humidity in September: 78%
The months with the highest relative humidity are October and November (80%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
San Juan de la Maguana, Dominican Republic
- Average rainfall in September: 162mm
The wettest month (with the highest rainfall) is September (162mm).
The driest month (with the least rainfall) is January (13mm).
Average rainfall days in September
San Juan de la Maguana, Dominican Republic
- Average rainfall days in September: 27 days
The month with the highest number of rainy days is October (27.3 days).
The month with the least rainy days is January (10 days).
Average daylight in September /
Average sunshine in September
San Juan de la Maguana, 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 0min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are January, February and December (Average sunshine: 9h and 30min).
The month with the least sunshine is May (Average sunshine: 8h and 48min).
Average sunshine days in September
San Juan de la Maguana, Dominican Republic
- Average sunshine days in September: 2.1 days
The month with the most sunshine days is January (16.1 days).
The month with the least sunshine days is June (2 days).
Average UV index in September
San Juan de la Maguana, Dominican Republic
- Average UV index in September: 6
The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 5).
Average cloud cover in September
San Juan de la Maguana, Dominican Republic
- Average cloud cover in September: 27
The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is December (Cloud cover 21).
Average visibility in September
San Juan de la Maguana, Dominican Republic
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
