September weather forecast and climate
Santiago De Los Caballeros, Dominican Republic

Weather in September

The first month of the autumn, September, is also a hot month in Santiago De Los Caballeros, Dominican Republic, with average temperature fluctuating between 21°C (69.8°F) and 31.1°C (88°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 31.1°C (88°F). In Santiago De Los Caballeros, the average low-temperature is 21°C (69.8°F).

Heat index

In September, the average heat index is computed to be a blistering 40.5°C (104.9°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In September, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is September when the rain falls for 22.1 days and typically aggregates up to 101mm (3.98") of precipitation.

Daylight

In Santiago De Los Caballeros, the average length of the day is 12.2h.

Sunshine

The average sunshine in Santiago De Los Caballeros, Dominican Republic, is 9.3h.

UV index

Months with the lowest UV index in Santiago De Los Caballeros are January through May, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Santiago De Los Caballeros?

In Santiago De Los Caballeros, in September, the average high-temperature is 31.1°C (88°F), and the average low-temperature is 21°C (69.8°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 40.5°C (104.9°F).

What is the average humidity in September in Santiago De Los Caballeros?

In September, the average relative humidity is 78%.

What is the rainiest month in Santiago De Los Caballeros?

The month with the most rainfall in Santiago De Los Caballeros, Dominican Republic, is September when the rain falls for 22.1 days and typically aggregates up to 101mm (3.98") of precipitation.

How many days does it rain in September in Santiago De Los Caballeros?

In Santiago De Los Caballeros, during September, the rain falls for 22.1 days and regularly aggregates up to 101mm (3.98") of precipitation.

How many hours of daylight does Santiago De Los Caballeros have in September?

In Santiago De Los Caballeros, the average length of the day in September is 12.2h.

How long on average sun shines in September in Santiago De Los Caballeros?

In September, the average sunshine is 9.3h.

What is the month with the lowest UV index in Santiago De Los Caballeros?

January through May, August through December, with an average maximum UV index of 6, are months with the lowest UV index in Santiago De Los Caballeros.

What is the UV index intensity in September in Santiago De Los Caballeros?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in September
Santiago De Los Caballeros, Dominican Republic

Average temperature in September - Santiago De Los Caballeros, Dominican Republic
  • Average high temperature in September: 31.1°C

The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is December (26.9°C).

  • Average low temperature in September: 21°C

The month with the highest average low temperature is July (21.4°C).
The coldest months (with the lowest average low temperature) are January and February (17.5°C).

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Average pressure in September
Santiago De Los Caballeros, Dominican Republic

Average pressure in September - Santiago De Los Caballeros, 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 (1012.9mbar).

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Average wind speed in September
Santiago De Los Caballeros, Dominican Republic

Average wind speed in September - Santiago De Los Caballeros, Dominican Republic
  • Average wind speed in September: 6.6km/h

The windiest month (with the highest average wind speed) is July (9.8km/h).
The calmest month (with the lowest average wind speed) is November (5.8km/h).

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Average humidity in September
Santiago De Los Caballeros, Dominican Republic

Average humidity in September - Santiago De Los Caballeros, Dominican Republic
  • Average humidity in September: 78%

Months with the highest relative humidity are November and December (83%).
The month with the lowest relative humidity is July (74%).

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Average rainfall in September
Santiago De Los Caballeros, Dominican Republic

Average rainfall in September - Santiago De Los Caballeros, Dominican Republic
  • Average rainfall in September: 101mm

The wettest month (with the highest rainfall) is September (101mm).
The driest months (with the least rainfall) are January and December (28mm).

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Average rainfall days in September
Santiago De Los Caballeros, Dominican Republic

Average rainfall days in September - Santiago De Los Caballeros, Dominican Republic
  • Average rainfall days in September: 22.1 days

The month with the highest number of rainy days is October (22.5 days).
The month with the least rainy days is January (13.3 days).

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Average daylight in September /
Average sunshine in September
Santiago De Los Caballeros, Dominican Republic

Average daylight in September / Average sunshine in September - Santiago De Los Caballeros, Dominican Republic
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 9.3h

Months with the most sunshine are July and August (Average sunshine: 9.4h).
Months with the least sunshine are March and November (Average sunshine: 8).

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Average sunshine days in September
Santiago De Los Caballeros, Dominican Republic

Average sunshine days in September - Santiago De Los Caballeros, Dominican Republic
  • Average sunshine days in September: 5.5 days

The month with the most sunshine days is June (13.5 days).
The month with the least sunshine days is October (3.5 days).

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Average UV index in September
Santiago De Los Caballeros, Dominican Republic

Average UV index in September - Santiago De Los Caballeros, Dominican Republic
  • Average UV index in September: 6

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

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Average cloud cover in September
Santiago De Los Caballeros, Dominican Republic

Average cloud cover in September - Santiago De Los Caballeros, Dominican Republic
  • Average cloud cover in September: 26

Months with the most cloud cover are March and November (Cloud cover 40).
Months with the least cloud cover are July and August (Cloud cover 23).

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Average visibility in September
Santiago De Los Caballeros, Dominican Republic

Average visibility in September - Santiago De Los Caballeros, Dominican Republic
  • Average visibility in September: 9km

Months with the highest visibility are June, July, August and September (9km).
Months with the lowest visibility are January and November (7km).

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