September weather forecast
Constanza, Dominican Republic

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Weather in September

September in Constanza sees weather transitioning towards the year-end phase. A minor rise in rainfall levels subtly ushers in the wet season revival, but the number of wet days doesn't alter significantly. September stands out with the lowest wind speed of 5km/h (3.1mph) throughout the year. Despite this, the city glints with ample sunshine on most days, with 12.2 hours of daylight belying the incremented cloud cover.

Temperature

September's beginning in Constanza signals an average high-temperature of a still warm 28.6°C (83.5°F), barely different from August's 28.9°C (84°F). Constanza, in September, witnesses an average low-temperature of 18.6°C (65.5°F).

Heat index

The average heat index in September is evaluated at a hot 34°C (93.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Always consider that heat index estimations are for light winds and places in the shade. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

In September, the average relative humidity in Constanza is 83%.

Rainfall

In Constanza, Dominican Republic, in September, during 22 rainfall days, 107mm (4.21") of precipitation is typically accumulated. In Constanza, Dominican Republic, during the entire year, the rain falls for 248.2 days and collects up to 1018mm (40.08") of precipitation.

Daylight

In September, the average length of the day in Constanza is 12h and 14min.
On the first day of the month, sunrise is at 06:28 and sunset at 18:57. On the last day of September, in Constanza, sunrise is at 06:33 and sunset at 18:31 AST.

Sunshine

The months with the most sunshine are June, August and September, with an average of 8.4h of sunshine.

UV index

March through October, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Jan 27, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot does it get in Constanza in September?

During September, Constanza experiences an average high-temperature of 28.6°C (83.5°F) and a low-temperature of 18.6°C (65.5°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 34°C (93.2°F).

What is the average humidity in September in Constanza?

In September, the average relative humidity in Constanza is 83%.

How many days does it rain in September in Constanza?

In Constanza, Dominican Republic, during September, the rain falls for 22 days and regularly aggregates up to 107mm (4.21") of precipitation.

What is the average length of the day in September in Constanza?

In September, the average day length in Constanza, Dominican Republic, is 12h and 14min.

When are sunrise and sunset in September in Constanza?

In September, on the first day of the month, sunrise is at 06:28 and sunset at 18:57. On the last day of the month, in Constanza, Dominican Republic, sunrise is at 06:33 and sunset at 18:31 AST.

What is the month with the most sunshine in Constanza?

The months with the most sunshine in Constanza are June, August and September, with an average of 8.4h of sunshine.

How many hours of sunshine does Constanza have in September?

The average sunshine duration in September is 8.4h.

What are the months with the highest UV index in Constanza?

March through October, with an average maximum UV index of 6, are months with the highest UV index in Constanza, Dominican Republic.

How high is the UV index in September in Constanza?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Constanza, Dominican Republic

Average temperature in September - Constanza, Dominican Republic
  • Average high temperature in September: 28.6°C

The warmest month (with the highest average high temperature) is August (28.9°C).
The month with the lowest average high temperature is January (25.4°C).

  • Average low temperature in September: 18.6°C

The month with the highest average low temperature is October (19°C).
The coldest months (with the lowest average low temperature) are January and February (15.4°C).

Average pressure in September
Constanza, Dominican Republic

Average pressure in September - Constanza, Dominican Republic
  • Average pressure in September: 1013.6mbar

The month with the highest atmospheric pressure is January (1017.1mbar).
The month with the lowest atmospheric pressure is October (1013mbar).

Average wind speed in September
Constanza, Dominican Republic

Average wind speed in September - Constanza, Dominican Republic
  • Average wind speed in September: 5km/h

The windiest months (with the highest average wind speed) are June and July (6km/h).
The calmest month (with the lowest average wind speed) is November (4.6km/h).

Average humidity in September
Constanza, Dominican Republic

Average humidity in September - Constanza, Dominican Republic
  • Average humidity in September: 83%

The month with the highest relative humidity is November (86%).
The months with the lowest relative humidity are March and August (82%).

Average rainfall in September
Constanza, Dominican Republic

Average rainfall in September - Constanza, Dominican Republic
  • Average rainfall in September: 107mm

The wettest month (with the highest rainfall) is May (185mm).
The driest month (with the least rainfall) is February (34mm).

Average rainfall days in September
Constanza, Dominican Republic

Average rainfall days in September - Constanza, Dominican Republic
  • Average rainfall days in September: 22 days

The month with the highest number of rainy days is May (24.7 days).
The month with the least rainy days is February (15.7 days).

Average daylight in September /
Average sunshine in September
Constanza, Dominican Republic

Average daylight in September / Average sunshine in September - Constanza, 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: 8h and 2min

The months with the most sunshine are June, August and September (Average sunshine: 8h and 24min).
The month with the least sunshine is November (Average sunshine: 7h and 30min).

Average sunshine days in September
Constanza, Dominican Republic

Average sunshine days in September - Constanza, Dominican Republic
  • Average sunshine days in September: 5.6 days

The month with the most sunshine days is January (9.5 days).
The month with the least sunshine days is April (4.3 days).

Average UV index in September
Constanza, Dominican Republic

Average UV index in September - Constanza, 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
Constanza, Dominican Republic

Average cloud cover in September - Constanza, Dominican Republic
  • Average cloud cover in September: 41

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 41).

Average visibility in September
Constanza, Dominican Republic

Average visibility in September - Constanza, Dominican Republic
  • Average visibility in September: 7km

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

Constanza, Dominican Republic

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