September weather forecastArriate, Spain

September

Weather in September

The first month of the autumn, September, is still a warm month in Arriate, Spain, with temperature in the range of an average low of 19.2°C (66.6°F) and an average high of 25.9°C (78.6°F).

Temperature

Arriate's progression into September involves a gentle drop in the average high-temperature, from a moderately hot 29.5°C (85.1°F) in August to a still warm 25.9°C (78.6°F). In the month of September, the temperature generally rests at an average low of 19.2°C (66.6°F).

Humidity

The average relative humidity in September is 66%.

Rainfall

In Arriate, in September, it is raining for 5.3 days, with typically 9mm (0.35") of accumulated precipitation. Throughout the year, in Arriate, Spain, there are 71.4 rainfall days, and 182mm (7.17") of precipitation is accumulated.

Daylight

In Arriate, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 07:52 and sunset at 20:48. On the last day of the month, sunrise is at 08:15 and sunset at 20:05 CEST.

Sunshine

In September, the average sunshine in Arriate, Spain, is 9.6h.

UV index

In September, the average daily maximum UV index in Arriate is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In September, an average UV index of 5 transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

The high-temperature during September is 25.9°C (78.6°F) and the low-temperature is 19.2°C (66.6°F). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 32°C (89.6°F).

In Arriate, the average relative humidity in September is 66%.

In Arriate, Spain, in September, it is raining for 5.3 days, with typically 9mm (0.35") of accumulated precipitation.

The average day length in September in Arriate is 12h and 25min.

In September, on the first day of the month, sunrise is at 07:52 and sunset at 20:48. On the last day of the month, sunrise is at 08:15 and sunset at 20:05 CEST.

In Arriate, the average sunshine duration in September is 9.6h.

In Arriate, Spain, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Arriate, Spain

  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (14.4°C).

  • Average low temperature in September: 19.2°C

The month with the highest average low temperature is August (21.6°C).
The coldest month (with the lowest average low temperature) is February (8.6°C).

Average pressure in September
Arriate, Spain

  • Average pressure in September: 1016.4mbar

The month with the highest atmospheric pressure is December (1022.6mbar).
The months with the lowest atmospheric pressure are July and August (1015mbar).

Average wind speed in September
Arriate, Spain

  • Average wind speed in September: 9.2km/h

The windiest months (with the highest average wind speed) are February and March (12.3km/h).
The calmest month (with the lowest average wind speed) is October (8.6km/h).

Average humidity in September
Arriate, Spain

  • Average humidity in September: 66%

The months with the highest relative humidity are January and December (74%).
The month with the lowest relative humidity is July (57%).

Average rainfall in September
Arriate, Spain

  • Average rainfall in September: 9mm

The wettest month (with the highest rainfall) is November (35mm).
The driest month (with the least rainfall) is July (1mm).

Average rainfall days in September
Arriate, Spain

  • Average rainfall days in September: 5.3 days

The month with the highest number of rainy days is March (9.4 days).
The month with the least rainy days is July (2 days).

Average daylight in September /
Average sunshine in September
Arriate, Spain

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 36min

The months with the most sunshine are June, July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 8h and 12min).

Average sunshine days in September
Arriate, Spain

  • Average sunshine days in September: 23.2 days

The month with the most sunshine days is July (28.6 days).
The month with the least sunshine days is April (19.2 days).

Average UV index in September
Arriate, Spain

  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

Average cloud cover in September
Arriate, Spain

  • Average cloud cover in September: 14

The months with the most cloud cover are January and March (Cloud cover 29).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in September
Arriate, Spain

  • Average visibility in September: 10km

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