September weather forecast
Arroyo Blanco, Dominican Republic

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Weather in September

The first month of the autumn, September, is also a hot month in Arroyo Blanco, Dominican Republic, with temperature in the range of an average low of 21.2°C (70.2°F) and an average high of 30.5°C (86.9°F).

Temperature

Arroyo Blanco commences September with an average high-temperature of a still tropical 30.5°C (86.9°F), maintaining a close resemblance to the previous month. During September, the nighttime temperature in Arroyo Blanco averages to a pleasant 21.2°C (70.2°F).

Heat index

The heat index for September is calculated to be a scorching 40°C (104°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in September in Arroyo Blanco is 82%.

Rainfall

In Arroyo Blanco, in September, it is raining for 25.4 days, with typically 108mm (4.25") of accumulated precipitation. Throughout the year, there are 284.1 rainfall days, and 1006mm (39.61") of precipitation is accumulated.

Daylight

In Arroyo Blanco, Dominican Republic, the average length of the day in September is 12h and 15min.
On the first day of the month, sunrise is at 06:25 and sunset at 18:55. On the last day of September, sunrise is at 06:31 and sunset at 18:29 AST.

Sunshine

The month with the most sunshine is September, with an average of 9.2h of sunshine.

UV index

The months with the lowest UV index in Arroyo Blanco, Dominican Republic, are January through May, July through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

How hot does it get in Arroyo Blanco in September?

The average high-temperature, in September, in Arroyo Blanco, is 30.5°C (86.9°F), while the average low-temperature is 21.2°C (70.2°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is calculated to be 40°C (104°F).

What is the average humidity in September in Arroyo Blanco?

In September, the average relative humidity in Arroyo Blanco is 82%.

How much does it rain in Arroyo Blanco in September?

In Arroyo Blanco, in September, it is raining for 25.4 days, with typically 108mm (4.25") of accumulated precipitation.

How many hours of daylight does Arroyo Blanco have in September?

In September, the average day length in Arroyo Blanco is 12h and 15min.

When is the sunrise / sunset in September in Arroyo Blanco?

In September, on the first day of the month, sunrise is at 06:25 and sunset at 18:55. On the last day of the month, sunrise is at 06:31 and sunset at 18:29 AST.

What month has the most sunshine in Arroyo Blanco?

The month with the most sunshine is September, with an average of 9.2h of sunshine.

How many hours of sunshine does Arroyo Blanco have in September?

In September, the average sunshine duration in Arroyo Blanco is 9.2h.

When is the lowest UV index in Arroyo Blanco?

January through May, July through December, with an average maximum UV index of 6, are months with the lowest UV index.

What is the UV index reading in September in Arroyo Blanco?

In September, the average daily maximum UV index in Arroyo Blanco, Dominican Republic, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Arroyo Blanco, Dominican Republic

Average temperature in September - Arroyo Blanco, Dominican Republic
  • Average high temperature in September: 30.5°C

The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (26.5°C).

  • Average low temperature in September: 21.2°C

The month with the highest average low temperature is August (21.6°C).
The coldest month (with the lowest average low temperature) is February (18°C).

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Average pressure in September
Arroyo Blanco, Dominican Republic

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

The month with the highest atmospheric pressure is January (1017.2mbar).
The month with the lowest atmospheric pressure is October (1012.9mbar).

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Average wind speed in September
Arroyo Blanco, Dominican Republic

Average wind speed in September - Arroyo Blanco, Dominican Republic
  • Average wind speed in September: 5.9km/h

The windiest months (with the highest average wind speed) are June and July (7.4km/h).
The calmest month (with the lowest average wind speed) is November (4.8km/h).

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Average humidity in September
Arroyo Blanco, Dominican Republic

Average humidity in September - Arroyo Blanco, Dominican Republic
  • Average humidity in September: 82%

The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are June and July (80%).

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Average rainfall in September
Arroyo Blanco, Dominican Republic

Average rainfall in September - Arroyo Blanco, Dominican Republic
  • Average rainfall in September: 108mm

The wettest month (with the highest rainfall) is May (142mm).
The driest month (with the least rainfall) is February (51mm).

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Average rainfall days in September
Arroyo Blanco, Dominican Republic

Average rainfall days in September - Arroyo Blanco, Dominican Republic
  • Average rainfall days in September: 25.4 days

The month with the highest number of rainy days is May (26.9 days).
The month with the least rainy days is February (20.3 days).

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Average daylight in September /
Average sunshine in September
Arroyo Blanco, Dominican Republic

Average daylight in September / Average sunshine in September - Arroyo Blanco, 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 1min

The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 48min).

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Average sunshine days in September
Arroyo Blanco, Dominican Republic

Average sunshine days in September - Arroyo Blanco, Dominican Republic
  • Average sunshine days in September: 2.1 days

The month with the most sunshine days is January (4.8 days).
The month with the least sunshine days is October (1.7 days).

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Average UV index in September
Arroyo Blanco, Dominican Republic

Average UV index in September - Arroyo Blanco, Dominican Republic
  • Average UV index in September: 6

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

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Average cloud cover in September
Arroyo Blanco, Dominican Republic

Average cloud cover in September - Arroyo Blanco, Dominican Republic
  • Average cloud cover in September: 34

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 34).

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Average visibility in September
Arroyo Blanco, Dominican Republic

Average visibility in September - Arroyo Blanco, Dominican Republic
  • Average visibility in September: 8km

The months with the highest visibility are February, March, April, May, June, July, August, September and October (8km).
The months with the lowest visibility are January, November and December (7km).

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Arroyo Blanco, Dominican Republic

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