September weather forecast
Arcos de Valdevez, Portugal

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Weather in September

The first month of the autumn, September, is still a warm month in Arcos de Valdevez, Portugal, with an average temperature varying between 24.8°C (76.6°F) and 14°C (57.2°F).

Temperature

As September takes its course, Arcos de Valdevez's average high-temperature registers at a still warm 24.8°C (76.6°F), closely aligning with the preceding month. Arcos de Valdevez's average low-temperature for the month of September records at a refreshing 14°C (57.2°F).

Humidity

August and September, with an average relative humidity of 69%, are the least humid months in Arcos de Valdevez.

Rainfall

In Arcos de Valdevez, during September, the rain falls for 8.1 days and regularly aggregates up to 35mm (1.38") of precipitation. In Arcos de Valdevez, during the entire year, the rain falls for 145.4 days and collects up to 998mm (39.29") of precipitation.

Daylight

In September, the average length of the day in Arcos de Valdevez, Portugal, is 12h and 29min.
On the first day of the month, sunrise is at 07:00 and sunset at 20:07. On the last day of September, sunrise is at 07:30 and sunset at 19:16 WEST.

Sunshine

In September, the average sunshine is 8.9h.

UV index

In Arcos de Valdevez, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Preventing sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are the temperatures in Arcos de Valdevez in September?

Arcos de Valdevez in September has an average high-temperature of 24.8°C (76.6°F) and an average low-temperature of 14°C (57.2°F).

What are the least humid months in Arcos de Valdevez?

August and September, with an average relative humidity of 69%, are the least humid months in Arcos de Valdevez.

What is the average humidity in September in Arcos de Valdevez?

In September, the average relative humidity in Arcos de Valdevez, Portugal, is 69%.

How much does it rain in Arcos de Valdevez in September?

In Arcos de Valdevez, Portugal, in September, during 8.1 rainfall days, 35mm (1.38") of precipitation is typically accumulated.

How many hours of daylight does Arcos de Valdevez have in September?

In Arcos de Valdevez, Portugal, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Arcos de Valdevez?

In September, on the first day of the month, sunrise is at 07:00 and sunset at 20:07. On the last day of the month, in Arcos de Valdevez, Portugal, sunrise is at 07:30 and sunset at 19:16 WEST.

How long on average sun shines in September in Arcos de Valdevez?

The average sunshine duration in September is 8.9h.

What is the UV index reading in September in Arcos de Valdevez?

In September, the average daily maximum UV index in Arcos de Valdevez is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Average temperature in September
Arcos de Valdevez, Portugal

Average temperature in September - Arcos de Valdevez, Portugal
  • Average high temperature in September: 24.8°C

The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (11.8°C).

  • Average low temperature in September: 14°C

The months with the highest average low temperature are July and August (14.4°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).

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Average pressure in September
Arcos de Valdevez, Portugal

Average pressure in September - Arcos de Valdevez, Portugal
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is December (1022.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in September
Arcos de Valdevez, Portugal

Average wind speed in September - Arcos de Valdevez, Portugal
  • Average wind speed in September: 7.8km/h

The windiest month (with the highest average wind speed) is February (10.3km/h).
The calmest month (with the lowest average wind speed) is September (7.8km/h).

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Average humidity in September
Arcos de Valdevez, Portugal

Average humidity in September - Arcos de Valdevez, Portugal
  • Average humidity in September: 69%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are August and September (69%).

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Average rainfall in September
Arcos de Valdevez, Portugal

Average rainfall in September - Arcos de Valdevez, Portugal
  • Average rainfall in September: 35mm

The wettest month (with the highest rainfall) is November (154mm).
The driest month (with the least rainfall) is July (11mm).

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Average rainfall days in September
Arcos de Valdevez, Portugal

Average rainfall days in September - Arcos de Valdevez, Portugal
  • Average rainfall days in September: 8.1 days

The month with the highest number of rainy days is November (17.2 days).
The month with the least rainy days is August (5.4 days).

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Average daylight in September /
Average sunshine in September
Arcos de Valdevez, Portugal

Average daylight in September / Average sunshine in September - Arcos de Valdevez, Portugal
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in September
Arcos de Valdevez, Portugal

Average sunshine days in September - Arcos de Valdevez, Portugal
  • Average sunshine days in September: 20.6 days

The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is November (11.7 days).

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Average UV index in September
Arcos de Valdevez, Portugal

Average UV index in September - Arcos de Valdevez, Portugal
  • Average UV index in September: 5

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).

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Average cloud cover in September
Arcos de Valdevez, Portugal

Average cloud cover in September - Arcos de Valdevez, Portugal
  • Average cloud cover in September: 24

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 21).

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Average visibility in September
Arcos de Valdevez, Portugal

Average visibility in September - Arcos de Valdevez, Portugal
  • Average visibility in September: 9km

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

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Arcos de Valdevez, Portugal

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