September weather forecast and climate
Pastaneira, Portugal

Weather in September

September, the first month of the autumn, in Pastaneira, is still a tropical month, with average temperature varying between 15.8°C (60.4°F) and 30°C (86°F).

Temperature

In September, the average high-temperature marginally drops, from 33.7°C (92.7°F) in August, to a still tropical 30°C (86°F). The average low-temperature, in Pastaneira, Portugal, is 15.8°C (60.4°F).

Heat index

The average heat index is estimated at a hot 32.3°C (90.1°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, wind). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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 in Pastaneira, Portugal, is 57%.

Rainfall

In Pastaneira, it is raining for 4.5 days, with typically 9mm (0.35") of accumulated precipitation. Throughout the year, there are 107 rainfall days, and 344mm (13.54") of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine is 9.4h.

UV index

In September, the average daily maximum UV index in Pastaneira is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 Pastaneira?

In Pastaneira, in September, the average high-temperature is 30°C (86°F), and the average low-temperature is 15.8°C (60.4°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, in September is calculated to 32.3°C (90.1°F).

What is the average humidity in September in Pastaneira?

In September, the average relative humidity in Pastaneira is 57%.

How much does it rain in Pastaneira in September?

In September, in Pastaneira, the rain falls for 4.5 days. Throughout September, 9mm (0.35") of precipitation is accumulated.

How many hours of daylight does Pastaneira have in September?

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

How many hours of sunshine does Pastaneira have in September?

In Pastaneira, Portugal, the average sunshine in September is 9.4h.

How high is the UV index in September in Pastaneira?

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

Average temperature in September
Pastaneira, Portugal

Average temperature in September - Pastaneira, Portugal
  • Average high temperature in September: 30°C

The warmest month (with the highest average high temperature) is August (33.7°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in September: 15.8°C

Months with the highest average low temperature are July and August (16.1°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).

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Average pressure in September
Pastaneira, Portugal

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

The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

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Average wind speed in September
Pastaneira, Portugal

Average wind speed in September - Pastaneira, Portugal
  • Average wind speed in September: 9.2km/h

The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).

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Average humidity in September
Pastaneira, Portugal

Average humidity in September - Pastaneira, Portugal
  • Average humidity in September: 57%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (54%).

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Average rainfall in September
Pastaneira, Portugal

Average rainfall in September - Pastaneira, Portugal
  • Average rainfall in September: 9mm

The wettest month (with the highest rainfall) is April (53mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in September
Pastaneira, Portugal

Average rainfall days in September - Pastaneira, Portugal
  • Average rainfall days in September: 4.5 days

Months with the highest number of rainy days are March and April (14.9 days).
The month with the least rainy days is August (1.3 days).

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

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

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9.4h

The month with the most sunshine is July (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 5.3h).

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Average sunshine days in September
Pastaneira, Portugal

Average sunshine days in September - Pastaneira, Portugal
  • Average sunshine days in September: 24 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is April (13.4 days).

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Average UV index in September
Pastaneira, Portugal

Average UV index in September - Pastaneira, Portugal
  • Average UV index in September: 6

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Pastaneira, Portugal

Average cloud cover in September - Pastaneira, Portugal
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 12).

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Average visibility in September
Pastaneira, Portugal

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

The month with the highest visibility is June (10km).
Months with the lowest visibility are January and April (8km).

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