September weather forecast
Eirol, Portugal

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Weather in September

The first month of the autumn, September, is still a warm month in Eirol, Portugal, with temperature in the range of an average high of 26.6°C (79.9°F) and an average low of 14.1°C (57.4°F).

Temperature

Eirol's weather in September indicates an average high-temperature of a still moderately hot 26.6°C (79.9°F), nearly consistent with the 28.4°C (83.1°F) of August. Eirol's temperature in September declines substantially from daytime highs, settling at a consistent average of 14.1°C (57.4°F) during the nights.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 65%.

Rainfall

In September, in Eirol, the rain falls for 5.7 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Eirol, during the entire year, the rain falls for 123.9 days and collects up to 660mm (25.98") of precipitation.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, sunrise is at 07:30 and sunset at 19:17 WEST.

Sunshine

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

UV index

In September, the average daily maximum UV index in Eirol is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
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Frequently asked questions

What is the temperature in September in Eirol?

In Eirol, in September, the average high-temperature is 26.6°C (79.9°F), and the average low-temperature is 14.1°C (57.4°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is appraised at 31°C (87.8°F).

What are the least humid months in Eirol?

The months with the lowest humidity are August and September, with an average relative humidity of 65%.

What is the average humidity in September in Eirol?

In Eirol, the average relative humidity in September is 65%.

How much does it rain in Eirol in September?

In Eirol, in September, during 5.7 rainfall days, 28mm (1.1") of precipitation is typically accumulated.

How many hours of daylight does Eirol have in September?

In September, the average day length in Eirol, Portugal, is 12h and 28min.

When is the sunrise / sunset in September in Eirol?

In September, on the first day of the month, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, in Eirol, Portugal, sunrise is at 07:30 and sunset at 19:17 WEST.

How long on average sun shines in September in Eirol?

In September, the average sunshine duration is 9.2h.

What is the UV index intensity in September in Eirol?

In Eirol, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Eirol, Portugal

Average temperature in September - Eirol, Portugal
  • Average high temperature in September: 26.6°C

The warmest month (with the highest average high temperature) is August (28.4°C).
The month with the lowest average high temperature is January (13.1°C).

  • Average low temperature in September: 14.1°C

The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (5.7°C).

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Average pressure in September
Eirol, Portugal

Average pressure in September - Eirol, Portugal
  • Average pressure in September: 1017mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in September
Eirol, Portugal

Average wind speed in September - Eirol, Portugal
  • Average wind speed in September: 7.3km/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 (7.3km/h).

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Average humidity in September
Eirol, Portugal

Average humidity in September - Eirol, Portugal
  • Average humidity in September: 65%

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

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Average rainfall in September
Eirol, Portugal

Average rainfall in September - Eirol, Portugal
  • Average rainfall in September: 28mm

The wettest month (with the highest rainfall) is November (98mm).
The driest month (with the least rainfall) is July (5mm).

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Average rainfall days in September
Eirol, Portugal

Average rainfall days in September - Eirol, Portugal
  • Average rainfall days in September: 5.7 days

The month with the highest number of rainy days is November (14.9 days).
The month with the least rainy days is August (3.3 days).

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

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in September
Eirol, Portugal

Average sunshine days in September - Eirol, Portugal
  • Average sunshine days in September: 22.7 days

The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is November (13.7 days).

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Average UV index in September
Eirol, Portugal

Average UV index in September - Eirol, Portugal
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The 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
Eirol, Portugal

Average cloud cover in September - Eirol, Portugal
  • Average cloud cover in September: 24

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in September
Eirol, Portugal

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

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

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Eirol, Portugal

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