September weather forecast
Arroyo de Leche, Dominican Republic

September

Weather in September

September, the first month of the autumn in Arroyo de Leche, is still a tropical month, with an average temperature fluctuating between 30.1°C (86.2°F) and 24.1°C (75.4°F).

Temperature

Arroyo de Leche's September average high-temperature settles at a still tropical 30.1°C (86.2°F), showing a near match with the preceding month. Nightly temperatures in Arroyo de Leche, Dominican Republic, drop to an average low of 24.1°C (75.4°F) in September.

Heat index

In September, the heat index is appraised at a fiery hot 38°C (100.4°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in September in Arroyo de Leche, Dominican Republic, is 79%.

Rainfall

In Arroyo de Leche, in September, it is raining for 20.7 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, in Arroyo de Leche, there are 229.2 rainfall days, and 719mm (28.31") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 15min.
On the first day of September in Arroyo de Leche, sunrise is at 06:27 and sunset at 18:57. On the last day of the month, sunrise is at 06:32 and sunset at 18:31 AST.

Sunshine

With an average of 9.6h of sunshine, September has the most sunshine of the year in Arroyo de Leche.

UV index

The months with the highest UV index in Arroyo de Leche are May through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 7 in September transforms into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

How hot does it get in Arroyo de Leche in September?
The average high-temperature and low-temperature in Arroyo de Leche, Dominican Republic, during September are 30.1°C (86.2°F) and 24.1°C (75.4°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 38°C (100.4°F).
What is the average humidity in September in Arroyo de Leche?
The average relative humidity in September in Arroyo de Leche is 79%.
How many days does it rain in September in Arroyo de Leche?
In Arroyo de Leche, Dominican Republic, in September, it is raining for 20.7 days, with typically 76mm (2.99") of accumulated precipitation.
What is the average length of the day in September in Arroyo de Leche?
In September, the average day length in Arroyo de Leche is 12h and 15min.
When are sunrise and sunset in September in Arroyo de Leche?
On the first day of September in Arroyo de Leche, sunrise is at 06:27 and sunset at 18:57. On the last day of the month, sunrise is at 06:32 and sunset at 18:31 AST.
What month has the most sunshine in Arroyo de Leche?
The month with the most sunshine in Arroyo de Leche is September, with an average of 9.6h of sunshine.
How many hours of sunshine does Arroyo de Leche have in September?
The average sunshine duration in September in Arroyo de Leche, Dominican Republic, is 9.6h.
When is the highest UV index in Arroyo de Leche?
May through October, with an average maximum UV index of 7, are months with the highest UV index in Arroyo de Leche, Dominican Republic.
How high is the UV index in September in Arroyo de Leche?
The average daily maximum UV index in September in Arroyo de Leche is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Arroyo de Leche, Dominican Republic
Average temperature in September
Arroyo de Leche, Dominican Republic
  • Average high temperature in September: 30.1°C

The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (26.3°C).

  • Average low temperature in September: 24.1°C

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is March (20.9°C).

Average pressure in September - Arroyo de Leche, Dominican Republic
Average pressure in September
Arroyo de Leche, Dominican Republic
  • Average pressure in September: 1013.7mbar

The month with the highest atmospheric pressure is January (1017.3mbar).
The month with the lowest atmospheric pressure is October (1013mbar).

Average wind speed in September - Arroyo de Leche, Dominican Republic
Average wind speed in September
Arroyo de Leche, Dominican Republic
  • Average wind speed in September: 12.9km/h

The windiest month (with the highest average wind speed) is July (17.3km/h).
The calmest months (with the lowest average wind speed) are October and November (11.5km/h).

Average humidity in September - Arroyo de Leche, Dominican Republic
Average humidity in September
Arroyo de Leche, Dominican Republic
  • Average humidity in September: 79%

The months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is July (77%).

Average rainfall in September - Arroyo de Leche, Dominican Republic
Average rainfall in September
Arroyo de Leche, Dominican Republic
  • Average rainfall in September: 76mm

The wettest month (with the highest rainfall) is May (100mm).
The driest month (with the least rainfall) is July (39mm).

Average rainfall days in September - Arroyo de Leche, Dominican Republic
Average rainfall days in September
Arroyo de Leche, Dominican Republic
  • Average rainfall days in September: 20.7 days

The month with the highest number of rainy days is November (21.9 days).
The month with the least rainy days is June (15.6 days).

Average daylight in September / Average sunshine in September - Arroyo de Leche, Dominican Republic
Average daylight in September /
Average sunshine in September
Arroyo de Leche, Dominican Republic
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is September (Average sunshine: 9h and 36min).
The month with the least sunshine is March (Average sunshine: 8h and 24min).

Average sunshine days in September - Arroyo de Leche, Dominican Republic
Average sunshine days in September
Arroyo de Leche, Dominican Republic
  • Average sunshine days in September: 5.3 days

The month with the most sunshine days is June (9.3 days).
The month with the least sunshine days is September (5.3 days).

Average UV index in September - Arroyo de Leche, Dominican Republic
Average UV index in September
Arroyo de Leche, Dominican Republic
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).

Average cloud cover in September - Arroyo de Leche, Dominican Republic
Average cloud cover in September
Arroyo de Leche, Dominican Republic
  • Average cloud cover in September: 24

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 24).

Average visibility in September - Arroyo de Leche, Dominican Republic
Average visibility in September
Arroyo de Leche, Dominican Republic
  • 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).

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