September weather forecastDénia, Spain
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Dénia, Spain, with temperature in the range of an average low of 23.1°C (73.6°F) and an average high of 25.1°C (77.2°F).Temperature
The introduction of September sees an average high-temperature of a still moderately hot 25.1°C (77.2°F), hardly deviating from August. Dénia documents a consistent average low-temperature of 23.1°C (73.6°F) at night during September.Humidity
The average relative humidity in September in Dénia is 71%.Rainfall
September is the month with the most rainfall. Rain falls for 9.4 days and accumulates 42mm (1.65") of precipitation.Sea temperature
In September, the average sea temperature in Dénia, Spain, is 25°C (77°F).Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
In Dénia, the average length of the day in September is 12h and 26min.On the first day of September in Dénia, sunrise is at 07:29 and sunset at 20:29. On the last day of the month, sunrise is at 07:55 and sunset at 19:43 CEST.
Sunshine
The average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Resist overexposure. Safeguarding from solar damage is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dénia, Spain
- Average high temperature in September: 25.1°C
The warmest month (with the highest average high temperature) is August (26.8°C).
The month with the lowest average high temperature is February (14.3°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is February (11.7°C).
Average pressure in September
Dénia, Spain
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is December (1021.6mbar).
The month with the lowest atmospheric pressure is April (1014.8mbar).
Average wind speed in September
Dénia, Spain
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is January (18.6km/h).
The calmest months (with the lowest average wind speed) are June and August (12.3km/h).
Average humidity in September
Dénia, Spain
- Average humidity in September: 71%
The months with the highest relative humidity are July and August (74%).
The month with the lowest relative humidity is November (65%).
Average rainfall in September
Dénia, Spain
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is September (42mm).
The driest month (with the least rainfall) is July (5mm).
Average rainfall days in September
Dénia, Spain
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is April (10.4 days).
The month with the least rainy days is July (4.6 days).
Average sea temperature in September
Dénia, Spain
- Average sea temperature in September: 25°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (14°C).
Average daylight in September /
Average sunshine in September
Dénia, Spain
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The months with the least sunshine are November and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Dénia, Spain
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is April (17.2 days).
Average UV index in September
Dénia, Spain
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Dénia, Spain
- Average cloud cover in September: 18
The months with the most cloud cover are March and April (Cloud cover 26).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in September
Dénia, 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).





