September weather forecastDeba, Spain
September
Weather in September
September, the first month of the autumn in Deba, is still a pleasant month, with an average temperature ranging between max 21.1°C (70°F) and min 15.5°C (59.9°F).Temperature
The introduction of September sees an average high-temperature of an agreeable 21.1°C (70°F), hardly deviating from August. Deba's nighttime temperature during September is consistently averaged at a mild 15.5°C (59.9°F).Humidity
The average relative humidity in September in Deba is 76%.Rainfall
September is the month with the least rainfall in Deba. Rain falls for 15.5 days and accumulates 44mm (1.73") of precipitation.Snowfall
In Deba, snow does not fall in April through November.Sea temperature
In Deba, the average seawater temperature in September is 20.8°C (69.4°F).Note: Swimming in water at 20.8°C (69.4°F) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in September is 12h and 30min.On the first day of the month, sunrise is at 07:34 and sunset at 20:44. On the last day of September, in Deba, sunrise is at 08:06 and sunset at 19:52 CEST.
Sunshine
The average sunshine in September in Deba, Spain, is 8.3h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Deba, Spain
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (9.9°C).
- Average low temperature in September: 15.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in September
Deba, Spain
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Deba, Spain
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is November (16.8km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Deba, Spain
- Average humidity in September: 76%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Deba, Spain
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (121mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in September
Deba, Spain
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is October (14.8 days).
Average snowfall in September
Deba, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Deba, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Deba, Spain
- Average sea temperature in September: 20.8°C
The best month for swimming (with the highest average sea temperature) is August (21.3°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).
Average daylight in September /
Average sunshine in September
Deba, Spain
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is November (Average sunshine: 4h and 48min).
Average sunshine days in September
Deba, Spain
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is October (13.6 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in September
Deba, Spain
- Average UV index in September: 5
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in September
Deba, Spain
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Deba, Spain
- Average visibility in September: 10km
The months with the highest visibility are February, March, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, April, May and November (9km).
