September weather forecastRiaza, Spain
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Riaza, Spain, with an average temperature ranging between max 23.3°C (73.9°F) and min 11.3°C (52.3°F).Temperature
Riaza's progression into September includes a drop in the average high-temperature, from a warm 28.3°C (82.9°F) in August to a still moderately hot 23.3°C (73.9°F). From significant daily highs, Riaza's nights in September cool down to an average low-temperature of 11.3°C (52.3°F).Humidity
In September, the average relative humidity in Riaza is 52%.Rainfall
In Riaza, in September, during 4.4 rainfall days, 8mm (0.31") of precipitation is typically accumulated. In Riaza, during the entire year, the rain falls for 108.3 days and collects up to 315mm (12.4") of precipitation.Snowfall
In Riaza, snow does not fall in May through October.Daylight
In Riaza, Spain, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 07:40 and sunset at 20:46. On the last day of September, in Riaza, sunrise is at 08:10 and sunset at 19:57 CEST.
Sunshine
The average sunshine in September in Riaza is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 5 in September translates into this advice:
Take precautions - Protection against sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Riaza, Spain
- Average high temperature in September: 23.3°C
The warmest months (with the highest average high temperature) are July and August (28.3°C).
The month with the lowest average high temperature is January (6.5°C).
- Average low temperature in September: 11.3°C
The months with the highest average low temperature are July and August (14.8°C).
The coldest months (with the lowest average low temperature) are January and February (-0.3°C).
Average pressure in September
Riaza, Spain
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1023.6mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in September
Riaza, Spain
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is February (13.3km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in September
Riaza, Spain
- Average humidity in September: 52%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Riaza, Spain
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is April (54mm).
The driest month (with the least rainfall) is August (4mm).
Average rainfall days in September
Riaza, Spain
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is August (3 days).
Average snowfall in September
Riaza, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is January (109mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Riaza, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Riaza, Spain
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Riaza, Spain
- Average sunshine days in September: 24.6 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in September
Riaza, Spain
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Riaza, Spain
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Riaza, Spain
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).
