September weather forecast
Luso, Portugal

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Luso, Portugal, with an average temperature varying between 14.6°C (58.3°F) and 25.8°C (78.4°F).

Temperature

Luso's average high-temperature in September is a still moderately hot 25.8°C (78.4°F), marking an insignificant difference from the 27.1°C (80.8°F) of August. Luso experiences an average temperature drop to a moderate 14.6°C (58.3°F) during September nights.

Humidity

The least humid month is September, with an average relative humidity of 68%.

Rainfall

In September, the rain falls for 5.9 days. Throughout September, 25mm (0.98") of precipitation is accumulated. Throughout the year, in Luso, there are 133.4 rainfall days, and 644mm (25.35") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September, sunrise is at 07:01 and sunset at 20:05. On the last day of the month, sunrise is at 07:29 and sunset at 19:17 WEST.

Sunshine

In September, the average sunshine in Luso is 9.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Frequently asked questions

What are September temperatures in Luso?
In Luso, in September, the average high-temperature is 25.8°C (78.4°F), and the average low-temperature is 14.6°C (58.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 29°C (84.2°F).
What is the least humid month in Luso?
The least humid month in Luso is September, with an average relative humidity of 68%.
What is the average humidity in September in Luso?
The average relative humidity in September is 68%.
How much does it rain in Luso in September?
In September, in Luso, Portugal, the rain falls for 5.9 days. Throughout September, 25mm (0.98") of precipitation is accumulated.
How many hours of daylight does Luso have in September?
In Luso, Portugal, the average day length in September is 12h and 28min.
What time are sunrise and sunset in September in Luso?
On the first day of September, sunrise is at 07:01 and sunset at 20:05. On the last day of the month, sunrise is at 07:29 and sunset at 19:17 WEST.
How long on average sun shines in September in Luso?
In September, the average sunshine duration in Luso, Portugal, is 9.3h.
What is the UV index reading in September in Luso?
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Luso, Portugal
Average temperature in September
Luso, Portugal
  • Average high temperature in September: 25.8°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (13.3°C).

  • Average low temperature in September: 14.6°C

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

Average pressure in September - Luso, Portugal
Average pressure in September
Luso, Portugal
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).

Average wind speed in September - Luso, Portugal
Average wind speed in September
Luso, Portugal
  • Average wind speed in September: 8.7km/h

The windiest month (with the highest average wind speed) is February (10.9km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).

Average humidity in September - Luso, Portugal
Average humidity in September
Luso, Portugal
  • Average humidity in September: 68%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is September (68%).

Average rainfall in September - Luso, Portugal
Average rainfall in September
Luso, Portugal
  • Average rainfall in September: 25mm

The wettest month (with the highest rainfall) is November (99mm).
The driest month (with the least rainfall) is July (7mm).

Average rainfall days in September - Luso, Portugal
Average rainfall days in September
Luso, Portugal
  • Average rainfall days in September: 5.9 days

The month with the highest number of rainy days is November (16 days).
The month with the least rainy days is August (3.9 days).

Average daylight in September / Average sunshine in September - Luso, Portugal
Average daylight in September /
Average sunshine in September
Luso, Portugal
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in September - Luso, Portugal
Average sunshine days in September
Luso, Portugal
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is November (11.3 days).

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

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in September - Luso, Portugal
Average cloud cover in September
Luso, Portugal
  • Average cloud cover in September: 21

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 21).

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

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (9km).
The months with the lowest visibility are July and August (8km).

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