September weather forecast and climate
Santa Vitória, Portugal

Weather in September

The first month of the autumn, September, is still a tropical month in Santa Vitória, Portugal, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 17°C (62.6°F).

Temperature

In Santa Vitória, the average high-temperature in September slightly decreases, from a tropical 34.7°C (94.5°F) in August, to a still hot 30.7°C (87.3°F). In September, the average low-temperature is 17°C (62.6°F).

Heat index

In September, the average heat index is calculated to a hot 32.5°C (90.5°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, metabolic differences, clothing), 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. 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

The average relative humidity in Santa Vitória, Portugal, is 52%.

Rainfall

In September, the rain falls for 3.3 days. Throughout September, 5mm (0.2") of precipitation is accumulated. Throughout the year, there are 65.2 rainfall days, and 110mm (4.33") of precipitation is accumulated.

Daylight

In Santa Vitória, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Santa Vitória is 9.4h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Santa Vitória?

In Santa Vitória, in September, the average high-temperature is 30.7°C (87.3°F), and the average low-temperature is 17°C (62.6°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), that calculates temperature value influenced by the moisture in the air, is calculated to 32.5°C (90.5°F).

What is the average humidity in September in Santa Vitória?

In September, the average relative humidity in Santa Vitória is 52%.

How many days does it rain in September in Santa Vitória?

In Santa Vitória, in September, it is raining for 3.3 days, with typically 5mm (0.2") of accumulated precipitation.

What is the average length of the day in September in Santa Vitória?

The average length of the day in September is 12.4h.

How many hours of sunshine does Santa Vitória have in September?

The average sunshine in September in Santa Vitória is 9.4h.

What is the UV index reading in September in Santa Vitória?

The average daily maximum UV index in September in Santa Vitória, Portugal, is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Santa Vitória, Portugal

Average temperature in September - Santa Vitória, Portugal
  • Average high temperature in September: 30.7°C

The warmest month (with the highest average high temperature) is August (34.7°C).
The month with the lowest average high temperature is January (14.4°C).

  • Average low temperature in September: 17°C

The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).

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Average pressure in September
Santa Vitória, Portugal

Average pressure in September - Santa Vitória, Portugal
  • Average pressure in September: 1016.4mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in September
Santa Vitória, Portugal

Average wind speed in September - Santa Vitória, Portugal
  • Average wind speed in September: 9.4km/h

The windiest month (with the highest average wind speed) is July (11.9km/h).
The calmest month (with the lowest average wind speed) is September (9.4km/h).

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Average humidity in September
Santa Vitória, Portugal

Average humidity in September - Santa Vitória, Portugal
  • Average humidity in September: 52%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in September
Santa Vitória, Portugal

Average rainfall in September - Santa Vitória, Portugal
  • Average rainfall in September: 5mm

The wettest month (with the highest rainfall) is April (20mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in September
Santa Vitória, Portugal

Average rainfall days in September - Santa Vitória, Portugal
  • Average rainfall days in September: 3.3 days

The month with the highest number of rainy days is April (9.7 days).
The month with the least rainy days is August (1 days).

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Average daylight in September /
Average sunshine in September
Santa Vitória, Portugal

Average daylight in September / Average sunshine in September - Santa Vitória, Portugal
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.4h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 5.4h).

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Average sunshine days in September
Santa Vitória, Portugal

Average sunshine days in September - Santa Vitória, Portugal
  • Average sunshine days in September: 25.1 days

The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is April (18.8 days).

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Average UV index in September
Santa Vitória, Portugal

Average UV index in September - Santa Vitória, Portugal
  • Average UV index in September: 6

Months with the highest UV index are July and August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Santa Vitória, Portugal

Average cloud cover in September - Santa Vitória, Portugal
  • Average cloud cover in September: 17

Months with the most cloud cover are January and April (Cloud cover 40).
Months with the least cloud cover are July and August (Cloud cover 10).

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Average visibility in September
Santa Vitória, Portugal

Average visibility in September - Santa Vitória, Portugal
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August and September (10km).
Months with the lowest visibility are January, February, March, April, May, October, November and December (9km).

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