September weather forecast and climate
Orca, Portugal

Weather in September

The first month of the autumn, September, is also a moderately hot month in Orca, Portugal, with temperature in the range of an average low of 15.5°C (59.9°F) and an average high of 28.5°C (83.3°F).

Temperature

In Orca, the average high-temperature in September slightly decreases, from a hot 32.8°C (91°F) in August, to a warm 28.5°C (83.3°F). The average low-temperature, in Orca, Portugal, is 15.5°C (59.9°F).

Heat index

In September, the average heat index is evaluated at 28.9°C (84°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, pregnancy, differences in body mass, height, and shape, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 49%.

Rainfall

In Orca, during September, the rain falls for 5 days and regularly aggregates up to 16mm (0.63") of precipitation. Throughout the year, there are 97 rainfall days, and 369mm (14.53") of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Daylight

In Orca, the average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine in Orca is 9.5h.

UV index

In September, the average daily maximum UV index in Orca is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. 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 Orca?

In September, in Orca, Portugal, the average high-temperature is 28.5°C (83.3°F), and the average low-temperature is 15.5°C (59.9°F). The average heat index (a.k.a. 'feels like', 'real feel'), that combines both air temperature and relative humidity, in September is calculated to 28.9°C (84°F).

What is the average humidity in September in Orca?

In September, the average relative humidity in Orca, Portugal, is 49%.

How many days does it rain in September in Orca?

In Orca, in September, it is raining for 5 days, with typically 16mm (0.63") of accumulated precipitation.

When it does not snow in Orca?

February through December are months without snowfall in Orca, Portugal.

How many hours of daylight does Orca have in September?

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

How many hours of sunshine does Orca have in September?

In Orca, the average sunshine in September is 9.5h.

What is the UV index reading in September in Orca?

The average daily maximum UV index in September in Orca is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in September
Orca, Portugal

Average temperature in September - Orca, Portugal
  • Average high temperature in September: 28.5°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (11.6°C).

  • Average low temperature in September: 15.5°C

The month with the highest average low temperature is July (17.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).

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Average pressure in September
Orca, Portugal

Average pressure in September - Orca, Portugal
  • Average pressure in September: 1016.5mbar

The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

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Average wind speed in September
Orca, Portugal

Average wind speed in September - Orca, Portugal
  • Average wind speed in September: 8.3km/h

The windiest month (with the highest average wind speed) is February (11.3km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).

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Average humidity in September
Orca, Portugal

Average humidity in September - Orca, Portugal
  • Average humidity in September: 49%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (44%).

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Average rainfall in September
Orca, Portugal

Average rainfall in September - Orca, Portugal
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is November (60mm).
The driest months (with the least rainfall) are July and August (3mm).

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Average rainfall days in September
Orca, Portugal

Average rainfall days in September - Orca, Portugal
  • Average rainfall days in September: 5 days

The month with the highest number of rainy days is November (12.3 days).
The month with the least rainy days is August (1.5 days).

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Average snowfall in September
Orca, Portugal

Average snowfall in September - Orca, Portugal
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (1mm).
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Orca, Portugal

Average snowfall days in September - Orca, Portugal
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and March (0.1 days).
Months with the least snowfall days are February, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Orca, Portugal
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.5h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 5.2h).

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Average sunshine days in September
Orca, Portugal

Average sunshine days in September - Orca, Portugal
  • Average sunshine days in September: 23.3 days

The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is April (16.6 days).

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Average UV index in September
Orca, Portugal

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

Months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in September
Orca, Portugal

Average cloud cover in September - Orca, Portugal
  • Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 42).
Months with the least cloud cover are July and August (Cloud cover 8).

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Average visibility in September
Orca, Portugal

Average visibility in September - Orca, Portugal
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).

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