September weather forecast
Altea, Spain

Weather in September

The first month of the autumn, September, is still a warm month in Altea, Spain, with average temperature varying between 22.5°C (72.5°F) and 24.9°C (76.8°F).

Temperature

In Altea, the average high-temperature is relatively the same as in August - a still warm 24.9°C (76.8°F). In Altea, Spain,, the average low-temperature is 22.5°C (72.5°F).

Humidity

The average relative humidity in Altea is 71%.

Rainfall

In September, the rain falls for 3.5 days. Throughout September, 6mm (0.24") of precipitation is accumulated. Throughout the year, there are 31.3 rainfall days, and 48mm (1.89") of precipitation is accumulated.

Sea temperature

In Altea, the average seawater temperature in September is 24.9°C (76.8°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.9°C (76.8°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

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

Sunshine

In Altea, the average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index in Altea is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the average humidity in September in Altea?

In September, the average relative humidity in Altea is 71%.

How many days does it rain in September in Altea?

In Altea, Spain, in September, during 3.5 rainfall days, 6mm (0.24") of precipitation is typically accumulated.

What is the sea temperature in September in Altea?

In Altea, Spain, the average seawater temperature in September is 24.9°C (76.8°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.9°C (76.8°F).

How many hours of daylight does Altea have in September?

In Altea, Spain, the average length of the day in September is 12.4h.

How many hours of sunshine does Altea have in September?

The average sunshine in September in Altea is 9.4h.

How high is the UV index in September in Altea?

The average daily maximum UV index in September in Altea, Spain, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Altea, Spain

Average temperature in September - Altea, Spain
  • Average high temperature in September: 24.9°C

The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is February (14.2°C).

  • Average low temperature in September: 22.5°C

The month with the highest average low temperature is August (24.5°C).
The coldest month (with the lowest average low temperature) is February (11°C).

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Average pressure in September
Altea, Spain

Average pressure in September - Altea, Spain
  • Average pressure in September: 1016.6mbar

The month with the highest atmospheric pressure is December (1021.7mbar).
The month with the lowest atmospheric pressure is April (1014.8mbar).

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Average wind speed in September
Altea, Spain

Average wind speed in September - Altea, Spain
  • Average wind speed in September: 12.5km/h

The windiest month (with the highest average wind speed) is January (17.1km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

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Average humidity in September
Altea, Spain

Average humidity in September - Altea, Spain
  • Average humidity in September: 71%

The month with the highest relative humidity is August (73%).
The month with the lowest relative humidity is November (65%).

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Average rainfall in September
Altea, Spain

Average rainfall in September - Altea, Spain
  • Average rainfall in September: 6mm

The wettest months (with the highest rainfall) are January and April (7mm).
The driest month (with the least rainfall) is February (0mm).

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Average rainfall days in September
Altea, Spain

Average rainfall days in September - Altea, Spain
  • Average rainfall days in September: 3.5 days

The month with the highest number of rainy days is April (5.3 days).
The month with the least rainy days is February (0.8 days).

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Average sea temperature in September
Altea, Spain

Average sea temperature in September - Altea, Spain
  • Average sea temperature in September: 24.9°C

The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest month (with the lowest average sea temperature) is February (14°C).

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

Average daylight in September / Average sunshine in September - Altea, Spain
  • 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 June (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in September
Altea, Spain

Average sunshine days in September - Altea, Spain
  • Average sunshine days in September: 25.6 days

The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is November (24.4 days).

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Average UV index in September
Altea, Spain

Average UV index in September - Altea, Spain
  • Average UV index in September: 6

Months with the highest UV index are July and August (UV index 7).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in September
Altea, Spain

Average cloud cover in September - Altea, Spain
  • Average cloud cover in September: 17

Months with the most cloud cover are January, March and April (Cloud cover 25).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in September
Altea, Spain

Average visibility in September - Altea, Spain
  • Average visibility in September: 10km

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

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