September weather forecast and climate
Salaborda Velha, Portugal

Weather in September

September, the first month of the autumn, in Salaborda Velha, is also a moderately hot month, with average temperature ranging between min 13.8°C (56.8°F) and max 27.2°C (81°F).

Temperature

In Salaborda Velha, Portugal, the average high-temperature is relatively the same as in August - a still warm 27.2°C (81°F). In September, in Salaborda Velha, the average low-temperature is 13.8°C (56.8°F).

Heat index

The average heat index is estimated at 28.8°C (83.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
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', 'feels like', 'felt air temperature', or 'real feel', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like clothing, wind, differences in body mass, height, and shape, and activity influence one's weather impression. 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 particularly important for children. 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.

Humidity

Months with the lowest humidity in Salaborda Velha are August and September, with an average relative humidity of 65%.

Rainfall

In Salaborda Velha, in September, during 5.8 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Salaborda Velha, there are 119.6 rainfall days, and 528mm (20.79") of precipitation is accumulated.

Daylight

In September, the average length of the day in Salaborda Velha is 12.4h.

Sunshine

In September, the average sunshine is 9.2h.

UV index

The average daily maximum UV index in Salaborda Velha is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Salaborda Velha?

In Salaborda Velha, Portugal, in September, the average high-temperature is 27.2°C (81°F), and the average low-temperature is 13.8°C (56.8°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines air temperature and relative humidity, in September is evaluated at 28.8°C (83.8°F).

What are the least humid months in Salaborda Velha?

Months with the lowest humidity in Salaborda Velha, Portugal, are August and September, with an average relative humidity of 65%.

What is the average humidity in September in Salaborda Velha?

The average relative humidity in September in Salaborda Velha is 65%.

How much does it rain in Salaborda Velha in September?

In September, in Salaborda Velha, Portugal, the rain falls for 5.8 days. Throughout September, 26mm (1.02") of precipitation is accumulated.

How many hours of daylight does Salaborda Velha have in September?

In September, the average length of the day in Salaborda Velha is 12.4h.

How long on average sun shines in September in Salaborda Velha?

In Salaborda Velha, Portugal, the average sunshine in September is 9.2h.

How high is the UV index in September in Salaborda Velha?

In Salaborda Velha, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Salaborda Velha, Portugal

Average temperature in September - Salaborda Velha, Portugal
  • Average high temperature in September: 27.2°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (12.9°C).

  • Average low temperature in September: 13.8°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).

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Average pressure in September
Salaborda Velha, Portugal

Average pressure in September - Salaborda Velha, Portugal
  • Average pressure in September: 1016.8mbar

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in September
Salaborda Velha, Portugal

Average wind speed in September - Salaborda Velha, Portugal
  • Average wind speed in September: 7.2km/h

The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is September (7.2km/h).

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Average humidity in September
Salaborda Velha, Portugal

Average humidity in September - Salaborda Velha, Portugal
  • Average humidity in September: 65%

The month with the highest relative humidity is January (84%).
Months with the lowest relative humidity are August and September (65%).

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Average rainfall in September
Salaborda Velha, Portugal

Average rainfall in September - Salaborda Velha, Portugal
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is July (4mm).

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Average rainfall days in September
Salaborda Velha, Portugal

Average rainfall days in September - Salaborda Velha, Portugal
  • Average rainfall days in September: 5.8 days

The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is August (2.8 days).

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Average daylight in September /
Average sunshine in September
Salaborda Velha, Portugal

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

The month with the longest days is June (Average daylight: 15h).
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: 11.2h).
The month with the least sunshine is January (Average sunshine: 5h).

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Average sunshine days in September
Salaborda Velha, Portugal

Average sunshine days in September - Salaborda Velha, Portugal
  • Average sunshine days in September: 23.2 days

The month with the most sunshine days is August (27.5 days).
Months with the least sunshine days are April and November (14.3 days).

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Average UV index in September
Salaborda Velha, Portugal

Average UV index in September - Salaborda Velha, Portugal
  • Average UV index in September: 5

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

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Average cloud cover in September
Salaborda Velha, Portugal

Average cloud cover in September - Salaborda Velha, Portugal
  • Average cloud cover in September: 24

The month with the most cloud cover is January (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 22).

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Average visibility in September
Salaborda Velha, Portugal

Average visibility in September - Salaborda Velha, Portugal
  • Average visibility in September: 9km

Months with the highest visibility are June, September, October and December (9km).
Months with the lowest visibility are January, February, March, April, May, July, August and November (8km).

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