September weather forecast
Sete Rios, Portugal

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Weather in September

September, the first month of the autumn in Sete Rios, is also a moderately hot month, with an average temperature fluctuating between 25.8°C (78.4°F) and 17.3°C (63.1°F).

Temperature

Sete Rios's average high-temperature marks a still warm 25.8°C (78.4°F) with the advent of September, closely mirroring that of the preceding month. Nighttime temperatures in September average to an enjoyable 17.3°C (63.1°F) in Sete Rios.

Humidity

August and September, with an average relative humidity of 68%, are the least humid months.

Rainfall

In Sete Rios, during September, the rain falls for 5.8 days and regularly aggregates up to 19mm (0.75") of precipitation. In Sete Rios, during the entire year, the rain falls for 112 days and collects up to 360mm (14.17") of precipitation.

Daylight

In September, the average length of the day in Sete Rios is 12h and 26min.
On the first day of September in Sete Rios, sunrise is at 07:06 and sunset at 20:06. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.

Sunshine

The average sunshine in September is 9.3h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Sete Rios, Portugal. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. 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 Sete Rios?

The high-temperature, in September, in Sete Rios, is 25.8°C (78.4°F), while the low-temperature averages to 17.3°C (63.1°F). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 29°C (84.2°F).

What is the least humid month in Sete Rios?

August and September, with an average relative humidity of 68%, are the least humid months.

What is the average humidity in September in Sete Rios?

In September, the average relative humidity is 68%.

How many days does it rain in September in Sete Rios?

In September, the rain falls for 5.8 days. Throughout September, 19mm (0.75") of precipitation is accumulated.

What is the average length of the day in September in Sete Rios?

In September, the average day length in Sete Rios, Portugal, is 12h and 26min.

What time are sunrise and sunset in September in Sete Rios?

In September, on the first day of the month, sunrise is at 07:06 and sunset at 20:06. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.

How many hours of sunshine does Sete Rios have in September?

In September, the average sunshine duration in Sete Rios, Portugal, is 9.3h.

What is the month with the highest UV index in Sete Rios?

June through September, with an average maximum UV index of 6, are months with the highest UV index in Sete Rios, Portugal.

What is the UV index reading in September in Sete Rios?

In September, the average daily maximum UV index in Sete Rios, Portugal, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.

Average temperature in September
Sete Rios, Portugal

Average temperature in September - Sete Rios, Portugal
  • Average high temperature in September: 25.8°C

The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in September: 17.3°C

The month with the highest average low temperature is August (17.6°C).
The coldest month (with the lowest average low temperature) is February (9.4°C).

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Average pressure in September
Sete Rios, Portugal

Average pressure in September - Sete Rios, Portugal
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).

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Average wind speed in September
Sete Rios, Portugal

Average wind speed in September - Sete Rios, Portugal
  • Average wind speed in September: 12.9km/h

The windiest months (with the highest average wind speed) are February and July (15.9km/h).
The calmest months (with the lowest average wind speed) are September and October (12.9km/h).

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Average humidity in September
Sete Rios, Portugal

Average humidity in September - Sete Rios, Portugal
  • Average humidity in September: 68%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (68%).

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Average rainfall in September
Sete Rios, Portugal

Average rainfall in September - Sete Rios, Portugal
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is November (61mm).
The driest month (with the least rainfall) is July (3mm).

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Average rainfall days in September
Sete Rios, Portugal

Average rainfall days in September - Sete Rios, Portugal
  • Average rainfall days in September: 5.8 days

The month with the highest number of rainy days is November (14.1 days).
The month with the least rainy days is August (2.3 days).

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Average daylight in September /
Average sunshine in September
Sete Rios, Portugal

Average daylight in September / Average sunshine in September - Sete Rios, Portugal
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in September
Sete Rios, Portugal

Average sunshine days in September - Sete Rios, Portugal
  • Average sunshine days in September: 23 days

The month with the most sunshine days is August (26.4 days).
The months with the least sunshine days are April and November (14.5 days).

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Average UV index in September
Sete Rios, Portugal

Average UV index in September - Sete Rios, Portugal
  • Average UV index in September: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Sete Rios, Portugal

Average cloud cover in September - Sete Rios, Portugal
  • Average cloud cover in September: 18

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 14).

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Average visibility in September
Sete Rios, Portugal

Average visibility in September - Sete Rios, Portugal
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Sete Rios, Portugal

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