September weather forecast and climate
Salgueira, Portugal

Weather in September

The first month of the autumn, September, is also a moderately hot month in Salgueira, Portugal, with average temperature fluctuating between 29.5°C (85.1°F) and 15°C (59°F).

Temperature

In September, the average high-temperature slightly decreases, from a hot 32.7°C (90.9°F) in August, to a moderately hot 29.5°C (85.1°F). The average low-temperature, is 15°C (59°F).

Heat index

The average heat index is calculated to a tropical 31.4°C (88.5°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
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', 'apparent temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like wind, clothing, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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

In September, the average relative humidity is 57%.

Rainfall

In Salgueira, Portugal, in September, during 4.3 rainfall days, 16mm (0.63") of precipitation is typically accumulated. In Salgueira, during the entire year, the rain falls for 85.1 days and collects up to 280mm (11.02") of precipitation.

Daylight

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

Sunshine

The average sunshine in September is 9.2h.

UV index

Months with the highest UV index in Salgueira are May through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in September 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. 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 Salgueira?

In Salgueira, in September, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 15°C (59°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, is evaluated at 31.4°C (88.5°F).

What is the average humidity in September in Salgueira?

The average relative humidity in September is 57%.

How many days does it rain in September in Salgueira?

In Salgueira, Portugal, during September, the rain falls for 4.3 days and regularly aggregates up to 16mm (0.63") of precipitation.

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

In September, the average length of the day in Salgueira, Portugal, is 12.4h.

How many hours of sunshine does Salgueira have in September?

In September, the average sunshine in Salgueira is 9.2h.

What is the month with the highest UV index in Salgueira?

Months with the highest UV index are May through September, with an average maximum UV index of 6.

What is the UV index reading in September in Salgueira?

In September, the average daily maximum UV index in Salgueira is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Salgueira, Portugal

Average temperature in September - Salgueira, Portugal
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is August (32.7°C).
The month with the lowest average high temperature is January (13.3°C).

  • Average low temperature in September: 15°C

The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (5.7°C).

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Average pressure in September
Salgueira, Portugal

Average pressure in September - Salgueira, Portugal
  • Average pressure in September: 1016.5mbar

The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in September
Salgueira, Portugal

Average wind speed in September - Salgueira, Portugal
  • Average wind speed in September: 9.8km/h

The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is September (9.8km/h).

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Average humidity in September
Salgueira, Portugal

Average humidity in September - Salgueira, Portugal
  • Average humidity in September: 57%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in September
Salgueira, Portugal

Average rainfall in September - Salgueira, Portugal
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is November (50mm).
The driest months (with the least rainfall) are July and August (3mm).

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Average rainfall days in September
Salgueira, Portugal

Average rainfall days in September - Salgueira, Portugal
  • Average rainfall days in September: 4.3 days

The month with the highest number of rainy days is November (11.2 days).
The month with the least rainy days is August (1.6 days).

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Average daylight in September /
Average sunshine in September
Salgueira, Portugal

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

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is July (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days in September
Salgueira, Portugal

Average sunshine days in September - Salgueira, Portugal
  • Average sunshine days in September: 25 days

Months with the most sunshine days are July and August (28.7 days).
The month with the least sunshine days is November (17.9 days).

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Average UV index in September
Salgueira, Portugal

Average UV index in September - Salgueira, Portugal
  • Average UV index in September: 6

Months with the highest UV index are May, June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Salgueira, Portugal

Average cloud cover in September - Salgueira, Portugal
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 12).

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Average visibility in September
Salgueira, Portugal

Average visibility in September - Salgueira, Portugal
  • Average visibility in September: 9km

The month with the highest visibility is June (10km).
The month with the lowest visibility is January (8km).

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