September weather forecast and climate
Seroa, Portugal

Weather in September

September, the first month of the autumn, in Seroa, is still a warm month, with average temperature varying between 25.4°C (77.7°F) and 13.5°C (56.3°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still moderately hot 25.4°C (77.7°F). In September, in Seroa, the average low-temperature is 13.5°C (56.3°F).

Humidity

The average relative humidity in September is 65%.

Rainfall

In Seroa, during 7.3 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, there are 143.4 rainfall days, and 842mm (33.15") of precipitation is accumulated.

Daylight

In Seroa, the average length of the day in September is 12.5h.

Sunshine

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

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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 Seroa?

The average high-temperature, in September, in Seroa, is 25.4°C (77.7°F), while the average low-temperature is 13.5°C (56.3°F).

What is the average humidity in September in Seroa?

In September, the average relative humidity is 65%.

How many days does it rain in September in Seroa?

In September, the rain falls for 7.3 days. Throughout September, 29mm (1.14") of precipitation is accumulated.

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

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

How many hours of sunshine does Seroa have in September?

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

What is the UV index intensity in September in Seroa?

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

Average temperature in September
Seroa, Portugal

Average temperature in September - Seroa, Portugal
  • Average high temperature in September: 25.4°C

The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (11.7°C).

  • Average low temperature in September: 13.5°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (5°C).

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Average pressure in September
Seroa, Portugal

Average pressure in September - Seroa, Portugal
  • Average pressure in September: 1017.3mbar

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
Seroa, Portugal

Average wind speed in September - Seroa, Portugal
  • Average wind speed in September: 6.7km/h

The windiest months (with the highest average wind speed) are February and March (8.7km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).

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Average humidity in September
Seroa, Portugal

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

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in September
Seroa, Portugal

Average rainfall in September - Seroa, Portugal
  • Average rainfall in September: 29mm

The wettest month (with the highest rainfall) is December (128mm).
The driest month (with the least rainfall) is July (9mm).

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Average rainfall days in September
Seroa, Portugal

Average rainfall days in September - Seroa, Portugal
  • Average rainfall days in September: 7.3 days

Months with the highest number of rainy days are January and November (16.4 days).
The month with the least rainy days is August (4.6 days).

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

Average daylight in September / Average sunshine in September - Seroa, 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: 9.2h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is January (Average sunshine: 4.7h).

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Average sunshine days in September
Seroa, Portugal

Average sunshine days in September - Seroa, Portugal
  • Average sunshine days in September: 20.9 days

The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is November (11.2 days).

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Average UV index in September
Seroa, Portugal

Average UV index in September - Seroa, 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, March, April, November and December (UV index 3).

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Average cloud cover in September
Seroa, Portugal

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

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in September
Seroa, Portugal

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

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

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