September weather forecast and climate
Monte da Chaminé, Portugal

Weather in September

September, the first month of the autumn, in Monte da Chaminé, is also a hot month, with temperature in the range of an average low of 15.8°C (60.4°F) and an average high of 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 hot 30°C (86°F). The average low-temperature, in Monte da Chaminé, is 15.8°C (60.4°F).

Heat index

In September, the average heat index is estimated at a hot 32.3°C (90.1°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. 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 measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, differences in body mass, height, and shape). 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 especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity in Monte da Chaminé, Portugal, is 57%.

Rainfall

In Monte da Chaminé, Portugal, in September, during 4.5 rainfall days, 9mm (0.35") of precipitation is typically accumulated. Throughout the year, there are 107 rainfall days, and 344mm (13.54") of precipitation is accumulated.

Daylight

The average length of the day in Monte da Chaminé, Portugal, is 12.4h.

Sunshine

In Monte da Chaminé, the average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. 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 Monte da Chaminé?

In Monte da Chaminé, Portugal, in September, the average high-temperature is 30°C (86°F), and the average low-temperature is 15.8°C (60.4°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that combines air temperature and relative humidity, is estimated at 32.3°C (90.1°F).

What is the average humidity in September in Monte da Chaminé?

In September, the average relative humidity is 57%.

How much does it rain in Monte da Chaminé in September?

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

How many hours of daylight does Monte da Chaminé have in September?

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

How long on average sun shines in September in Monte da Chaminé?

In Monte da Chaminé, the average sunshine in September is 9.4h.

What is the UV index reading in September in Monte da Chaminé?

In Monte da Chaminé, Portugal, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Monte da Chaminé, Portugal

Average temperature in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average pressure in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average wind speed in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average humidity in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average rainfall in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average rainfall days in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average daylight in September / Average sunshine in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average sunshine days in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average UV index in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average cloud cover in September - Monte da Chaminé, 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
Monte da Chaminé, Portugal

Average visibility in September - Monte da Chaminé, 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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