September weather forecastErmua, Spain
September
Weather in September
September, the first month of the autumn in Ermua, is also an agreeable month, with temperature in the range of an average high of 21.6°C (70.9°F) and an average low of 15.7°C (60.3°F).Temperature
Ermua notes an average high-temperature of an agreeable 21.6°C (70.9°F) in September, displaying minor variation from August. In Ermua, an average nighttime temperature of 15.7°C (60.3°F) is expected during September.Humidity
In Ermua, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Ermua. Rain falls for 14 days and accumulates 31mm (1.22") of precipitation.Snowfall
In Ermua, Spain, snow does not fall in April through November.Daylight
In Ermua, 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 Ermua, sunrise is at 08:06 and sunset at 19:52 CEST.
Sunshine
In Ermua, the average sunshine in September 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 estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ermua, Spain
- Average high temperature in September: 21.6°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in September: 15.7°C
The month with the highest average low temperature is August (16.9°C).
The coldest month (with the lowest average low temperature) is February (6.5°C).
Average pressure in September
Ermua, 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
Ermua, Spain
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Ermua, Spain
- Average humidity in September: 75%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Ermua, Spain
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is September (31mm).
Average rainfall days in September
Ermua, Spain
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is January (18.6 days).
The month with the least rainy days is October (12.7 days).
Average snowfall in September
Ermua, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ermua, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ermua, 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 6min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 12min).
Average sunshine days in September
Ermua, Spain
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (15.4 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in September
Ermua, 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
Ermua, Spain
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are September and October (Cloud cover 34).
Average visibility in September
Ermua, Spain
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
