September weather forecast
Guarda, Portugal

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Weather in September

September brings in the mildness of autumn to Guarda, Portugal, with declining temperatures and an increase in rainfall. The weather in September is cooler than August, although it retains the warmth of summer that lingers throughout the month. Notably, September experiences a drop in temperature to 25.3°C (77.5°F) along with an increased rainfall of 19mm (0.75") spread over 5.9 days. Despite these climatic adjustments, the city remains bright with generous daylight, making this an ideal time for those desiring mild weather and less crowd.

Temperature

The commencement of September in Guarda, Portugal, indicates a gentle shift in the average high-temperature, receding from August's 29.2°C (84.6°F) to a still moderately hot 25.3°C (77.5°F). Following the sharp contrast to daytime warmth, an average nighttime temperature of 12.4°C (54.3°F) gets registered during September.

Humidity

In September, the average relative humidity in Guarda is 55%.

Rainfall

In Guarda, during September, the rain falls for 5.9 days and regularly aggregates up to 19mm (0.75") of precipitation. Throughout the year, there are 113.4 rainfall days, and 421mm (16.57") of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Guarda.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 06:56 and sunset at 20:00. On the last day of September, sunrise is at 07:25 and sunset at 19:12 WEST.

Sunshine

The average sunshine in September in Guarda is 9.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 5 during September morphs into the following directions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

What is the average September temperature in Guarda?

In Guarda, in September, the average high-temperature is 25.3°C (77.5°F), and the average low-temperature is 12.4°C (54.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is computed to be 30°C (86°F).

What is the average humidity in September in Guarda?

In Guarda, the average relative humidity in September is 55%.

How many days does it rain in September in Guarda?

In Guarda, Portugal, in September, it is raining for 5.9 days, with typically 19mm (0.75") of accumulated precipitation.

When it does not snow in Guarda?

In Guarda, Portugal, snow does not fall in May through October.

How many hours of daylight does Guarda have in September?

The average day length in September in Guarda, Portugal, is 12h and 28min.

When are sunrise and sunset in September in Guarda?

In September, on the first day of the month, sunrise is at 06:56 and sunset at 20:00. On the last day of the month, in Guarda, Portugal, sunrise is at 07:25 and sunset at 19:12 WEST.

How many hours of sunshine does Guarda have in September?

In Guarda, the average sunshine duration in September is 9.5h.

What is the UV index reading in September in Guarda?

In September, the average daily maximum UV index in Guarda, Portugal, is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Guarda, Portugal

Average temperature in September - Guarda, Portugal
  • Average high temperature in September: 25.3°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8.7°C).

  • Average low temperature in September: 12.4°C

The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).

Average pressure in September
Guarda, Portugal

Average pressure in September - Guarda, Portugal
  • Average pressure in September: 1016.8mbar

The month with the highest atmospheric pressure is December (1023.1mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

Average wind speed in September
Guarda, Portugal

Average wind speed in September - Guarda, Portugal
  • Average wind speed in September: 9.1km/h

The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).

Average humidity in September
Guarda, Portugal

Average humidity in September - Guarda, Portugal
  • Average humidity in September: 55%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (50%).

Average rainfall in September
Guarda, Portugal

Average rainfall in September - Guarda, Portugal
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (6mm).

Average rainfall days in September
Guarda, Portugal

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

The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is August (2.7 days).

Average snowfall in September
Guarda, Portugal

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

The months with the highest snowfall are January and February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Guarda, Portugal

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

The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Guarda, 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 3min

The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in September
Guarda, Portugal

Average sunshine days in September - Guarda, Portugal
  • Average sunshine days in September: 22.7 days

The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is April (12.5 days).

Average UV index in September
Guarda, Portugal

Average UV index in September - Guarda, 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 2).

Average cloud cover in September
Guarda, Portugal

Average cloud cover in September - Guarda, Portugal
  • Average cloud cover in September: 20

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in September
Guarda, Portugal

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

The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, April, November and December (8km).

Guarda, Portugal

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