Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, the average high-temperature registers at a still pleasant 20.9°C (69.6°F), subtly different from August's 21.9°C (71.4°F). Santoña's average low temperature, barely cooler than the daytime high, steadies at an enjoyable 17°C (62.6°F) during September.Humidity
In Santoña, the average relative humidity in September is 75%.Rainfall
In Santoña, Spain, during September, the rain falls for 8.3 days and regularly aggregates up to 15mm (0.59") of precipitation. In Santoña, Spain, during the entire year, the rain falls for 133.9 days and collects up to 336mm (13.23") of precipitation.Snowfall
March through November are months without snowfall in Santoña.Sea temperature
In Santoña, Spain, in September, the average water temperature is 20.6°C (69.1°F).Note: For most people, swimming in water at 20.6°C (69.1°F) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Santoña, Spain, the average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 07:38 and sunset at 20:48. On the last day of September, sunrise is at 08:10 and sunset at 19:56 CEST.
Sunshine
In September, the average sunshine is 8.4h.UV index
May through October, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 5 transforms into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are September temperatures in Santoña?
What is the average humidity in September in Santoña?
How many days does it rain in September in Santoña?
When it does not snow in Santoña?
How cold is the water in September in Santoña?
How many hours of daylight does Santoña have in September?
What time are sunrise and sunset in September in Santoña?
How many hours of sunshine does Santoña have in September?
What is the month with the highest UV index in Santoña?
What is the UV index intensity in September in Santoña?
Average temperature in September
Santoña, Spain
- Average high temperature in September: 20.9°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The months with the lowest average high temperature are January and February (11.8°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (18.1°C).
The coldest month (with the lowest average low temperature) is February (8.4°C).
Average pressure in September
Santoña, Spain
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1021.5mbar).
The months with the lowest atmospheric pressure are April and November (1015.7mbar).
Average wind speed in September
Santoña, Spain
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is November (19.5km/h).
The calmest month (with the lowest average wind speed) is August (12.3km/h).
Average humidity in September
Santoña, Spain
- Average humidity in September: 75%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are October and December (72%).
Average rainfall in September
Santoña, Spain
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (53mm).
The driest month (with the least rainfall) is July (14mm).
Average rainfall days in September
Santoña, Spain
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is January (13.8 days).
The month with the least rainy days is September (8.3 days).
Average snowfall in September
Santoña, Spain
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Santoña, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Santoña, Spain
- Average sea temperature in September: 20.6°C
The best month for swimming (with the highest average sea temperature) is August (21.2°C).
The coldest month (with the lowest average sea temperature) is February (12.7°C).
Average daylight in September /
Average sunshine in September
Santoña, Spain
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are June and July (Average sunshine: 9h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 24min).
Average sunshine days in September
Santoña, Spain
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is August (20.1 days).
The month with the least sunshine days is February (14.2 days).
Average UV index in September
Santoña, Spain
- Average UV index in September: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, April and November (UV index 3).
Average cloud cover in September
Santoña, Spain
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Santoña, 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).
Santoña, Spain
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