September weather forecast and climate
Vales Luis Neto, Portugal

Weather in September

The first month of the autumn, September, is still a warm month in Vales Luis Neto, Portugal, with average temperature ranging between min 18.8°C (65.8°F) and max 25.9°C (78.6°F).

Temperature

In September, the average high-temperature slightly decreases, from a warm 29°C (84.2°F) in August, to a still moderately hot 25.9°C (78.6°F). In Vales Luis Neto, Portugal, the average low-temperature is 18.8°C (65.8°F).

Humidity

In September, the average relative humidity in Vales Luis Neto, Portugal, is 65%.

Rainfall

In September, in Vales Luis Neto, the rain falls for 3 days. Throughout September, 3mm (0.12") of precipitation is accumulated. Throughout the year, in Vales Luis Neto, Portugal, there are 49.6 rainfall days, and 65mm (2.56") of precipitation is accumulated.

Daylight

The average length of the day in September is 12.4h.

Sunshine

The average sunshine in Vales Luis Neto is 9.6h.

UV index

Months with the highest UV index in Vales Luis Neto are May through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Vales Luis Neto?

The average high-temperature, in September, in Vales Luis Neto, is 25.9°C (78.6°F), while the average low-temperature is 18.8°C (65.8°F).

What is the average humidity in September in Vales Luis Neto?

The average relative humidity in September in Vales Luis Neto, Portugal, is 65%.

How many days does it rain in September in Vales Luis Neto?

In Vales Luis Neto, Portugal, in September, it is raining for 3 days, with typically 3mm (0.12") of accumulated precipitation.

What is the average length of the day in September in Vales Luis Neto?

In September, the average length of the day in Vales Luis Neto is 12.4h.

How long on average sun shines in September in Vales Luis Neto?

In September, the average sunshine in Vales Luis Neto, Portugal, is 9.6h.

When is the highest UV index in Vales Luis Neto?

Months with the highest UV index in Vales Luis Neto are May through September, with an average maximum UV index of 6.

What is the UV index intensity in September in Vales Luis Neto?

In Vales Luis Neto, Portugal, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Vales Luis Neto, Portugal

Average temperature in September - Vales Luis Neto, Portugal
  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in September: 18.8°C

The month with the highest average low temperature is August (19.9°C).
The coldest months (with the lowest average low temperature) are January and February (9.8°C).

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Average pressure in September
Vales Luis Neto, Portugal

Average pressure in September - Vales Luis Neto, Portugal
  • Average pressure in September: 1016.4mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in September
Vales Luis Neto, Portugal

Average wind speed in September - Vales Luis Neto, Portugal
  • Average wind speed in September: 11.6km/h

The windiest months (with the highest average wind speed) are February and March (17.1km/h).
The calmest month (with the lowest average wind speed) is September (11.6km/h).

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Average humidity in September
Vales Luis Neto, Portugal

Average humidity in September - Vales Luis Neto, Portugal
  • Average humidity in September: 65%

The month with the highest relative humidity is January (76%).
Months with the lowest relative humidity are July and August (59%).

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Average rainfall in September
Vales Luis Neto, Portugal

Average rainfall in September - Vales Luis Neto, Portugal
  • Average rainfall in September: 3mm

The wettest month (with the highest rainfall) is April (12mm).
The driest month (with the least rainfall) is July (0mm).

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Average rainfall days in September
Vales Luis Neto, Portugal

Average rainfall days in September - Vales Luis Neto, Portugal
  • Average rainfall days in September: 3 days

The month with the highest number of rainy days is April (8.3 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in September /
Average sunshine in September
Vales Luis Neto, Portugal

Average daylight in September / Average sunshine in September - Vales Luis Neto, Portugal
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 9.6h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 6h).

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Average sunshine days in September
Vales Luis Neto, Portugal

Average sunshine days in September - Vales Luis Neto, Portugal
  • Average sunshine days in September: 25.6 days

The month with the most sunshine days is July (29.5 days).
The month with the least sunshine days is April (18.4 days).

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Average UV index in September
Vales Luis Neto, Portugal

Average UV index in September - Vales Luis Neto, Portugal
  • Average UV index in September: 6

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

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Average cloud cover in September
Vales Luis Neto, Portugal

Average cloud cover in September - Vales Luis Neto, Portugal
  • Average cloud cover in September: 14

The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in September
Vales Luis Neto, Portugal

Average visibility in September - Vales Luis Neto, Portugal
  • Average visibility in September: 10km

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

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