September weather forecast and climate
Vale de Afonsinho, Portugal

Weather in September

The first month of the autumn, September, is still a warm month in Vale de Afonsinho, Portugal, with temperature in the range of an average low of 12.4°C (54.3°F) and an average high of 25.3°C (77.5°F).

Temperature

In September, the average high-temperature marginally drops, from 29.2°C (84.6°F) in August, to a still moderately hot 25.3°C (77.5°F). The average low-temperature, in Vale de Afonsinho, is 12.4°C (54.3°F).

Humidity

The average relative humidity in September is 55%.

Rainfall

In Vale de Afonsinho, it is raining for 5.9 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, there are 113.4 rainfall days, and 421mm (16.57") of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Vale de Afonsinho, Portugal.

Daylight

In Vale de Afonsinho, the average length of the day is 12.5h.

Sunshine

In September, the average sunshine is 9.5h.

UV index

The average daily maximum UV index in Vale de Afonsinho is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Vale de Afonsinho?

The average high-temperature, in September, in Vale de Afonsinho, Portugal, is 25.3°C (77.5°F), while the average low-temperature is 12.4°C (54.3°F).

What is the average humidity in September in Vale de Afonsinho?

In September, the average relative humidity in Vale de Afonsinho, Portugal, is 55%.

How many days does it rain in September in Vale de Afonsinho?

In Vale de Afonsinho, Portugal, during September, the rain falls for 5.9 days and regularly aggregates up to 19mm (0.75") of precipitation.

When it does not snow in Vale de Afonsinho?

In Vale de Afonsinho snow does not fall in May through October.

What is the average length of the day in September in Vale de Afonsinho?

The average length of the day in September is 12.5h.

How many hours of sunshine does Vale de Afonsinho have in September?

In September, the average sunshine in Vale de Afonsinho is 9.5h.

What is the UV index intensity in September in Vale de Afonsinho?

In Vale de Afonsinho, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Vale de Afonsinho, Portugal

Average temperature in September - Vale de Afonsinho, Portugal
  • Average high temperature in September: 25.3°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 (8.7°C).

  • Average low temperature in September: 12.4°C

The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).

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Average pressure in September
Vale de Afonsinho, Portugal

Average pressure in September - Vale de Afonsinho, Portugal
  • Average pressure in September: 1016.8mbar

The month with the highest atmospheric pressure is December (1023.1mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

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Average wind speed in September
Vale de Afonsinho, Portugal

Average wind speed in September - Vale de Afonsinho, Portugal
  • Average wind speed in September: 9.1km/h

The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).

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Average humidity in September
Vale de Afonsinho, Portugal

Average humidity in September - Vale de Afonsinho, Portugal
  • Average humidity in September: 55%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in September
Vale de Afonsinho, Portugal

Average rainfall in September - Vale de Afonsinho, Portugal
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (6mm).

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Average rainfall days in September
Vale de Afonsinho, Portugal

Average rainfall days in September - Vale de Afonsinho, Portugal
  • Average rainfall days in September: 5.9 days

The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is August (2.7 days).

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Average snowfall in September
Vale de Afonsinho, Portugal

Average snowfall in September - Vale de Afonsinho, Portugal
  • Average snowfall in September: 0mm

Months with the highest snowfall are January and February (44mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Vale de Afonsinho, Portugal

Average snowfall days in September - Vale de Afonsinho, Portugal
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.9 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Vale de Afonsinho, Portugal

Average daylight in September / Average sunshine in September - Vale de Afonsinho, Portugal
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 9.5h

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is January (Average sunshine: 4.3h).

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Average sunshine days in September
Vale de Afonsinho, Portugal

Average sunshine days in September - Vale de Afonsinho, Portugal
  • Average sunshine days in September: 22.7 days

The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is April (12.5 days).

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Average UV index in September
Vale de Afonsinho, Portugal

Average UV index in September - Vale de Afonsinho, Portugal
  • Average UV index in September: 5

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Vale de Afonsinho, Portugal

Average cloud cover in September - Vale de Afonsinho, Portugal
  • Average cloud cover in September: 20

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).

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Average visibility in September
Vale de Afonsinho, Portugal

Average visibility in September - Vale de Afonsinho, Portugal
  • Average visibility in September: 10km

Months with the highest visibility are July, August and September (10km).
Months with the lowest visibility are January, February, April, November and December (8km).

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