September weather forecast and climate
Raiva, Portugal

Weather in September

The first month of the autumn, September, is still a warm month in Raiva, Portugal, with temperature in the range of an average low of 14.6°C (58.3°F) and an average high of 25.2°C (77.4°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still moderately hot 25.2°C (77.4°F). The average low-temperature, in Raiva, is 14.6°C (58.3°F).

Humidity

Months with the lowest humidity in Raiva are August and September, with an average relative humidity of 66%.

Rainfall

In Raiva, during September, the rain falls for 6.2 days and regularly aggregates up to 29mm (1.14") of precipitation. Throughout the year, in Raiva, there are 125.7 rainfall days, and 773mm (30.43") of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine in Raiva, Portugal, is 9.1h.

UV index

The average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Raiva?

In Raiva, in September, the average high-temperature is 25.2°C (77.4°F), and the average low-temperature is 14.6°C (58.3°F).

What are the least humid months in Raiva?

Months with the lowest humidity in Raiva, Portugal, are August and September, with an average relative humidity of 66%.

What is the average humidity in September in Raiva?

In Raiva, the average relative humidity in September is 66%.

How much does it rain in Raiva in September?

In Raiva, Portugal, during September, the rain falls for 6.2 days and regularly aggregates up to 29mm (1.14") of precipitation.

How many hours of daylight does Raiva have in September?

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

How long on average sun shines in September in Raiva?

In September, the average sunshine in Raiva, Portugal, is 9.1h.

What is the UV index intensity in September in Raiva?

In Raiva, Portugal, the average daily maximum UV index in September 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
Raiva, Portugal

Average temperature in September - Raiva, Portugal
  • Average high temperature in September: 25.2°C

The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (12.7°C).

  • Average low temperature in September: 14.6°C

Months with the highest average low temperature are July and August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (6.8°C).

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Average pressure in September
Raiva, Portugal

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

The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

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Average wind speed in September
Raiva, Portugal

Average wind speed in September - Raiva, 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
Raiva, Portugal

Average humidity in September - Raiva, Portugal
  • Average humidity in September: 66%

The month with the highest relative humidity is January (82%).
Months with the lowest relative humidity are August and September (66%).

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Average rainfall in September
Raiva, Portugal

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

The wettest month (with the highest rainfall) is November (124mm).
The driest month (with the least rainfall) is July (10mm).

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Average rainfall days in September
Raiva, Portugal

Average rainfall days in September - Raiva, Portugal
  • Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (5 days).

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

Average daylight in September / Average sunshine in September - Raiva, 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: 9.1h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 4.9h).

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Average sunshine days in September
Raiva, Portugal

Average sunshine days in September - Raiva, Portugal
  • Average sunshine days in September: 21.8 days

The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is November (12.5 days).

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Average UV index in September
Raiva, Portugal

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

The month with the highest UV index is August (UV index 6).
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
Raiva, Portugal

Average cloud cover in September - Raiva, 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 22).

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Average visibility in September
Raiva, Portugal

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

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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