September weather forecastLa Unión, Spain
September
Weather in September
September, the first month of the autumn in La Unión, is still a warm month, with an average temperature fluctuating between 25.5°C (77.9°F) and 22.9°C (73.2°F).Temperature
September notes an average high-temperature of a still moderately hot 25.5°C (77.9°F), subtly differing from August's 27.3°C (81.1°F). La Unión maintains a near steady average temperature of 22.9°C (73.2°F) during the nights of September, demonstrating little drop from daytime highs.Humidity
The average relative humidity in September is 71%.Rainfall
The month with the most rainfall in La Unión is September, when the rain falls for 4.5 days and typically aggregates up to 26mm (1.02") of precipitation.Daylight
The average length of the day in September is 12h and 25min.On the first day of September in La Unión, sunrise is at 07:34 and sunset at 20:32. On the last day of the month, sunrise is at 07:58 and sunset at 19:48 CEST.
Sunshine
In La Unión, the average sunshine in September is 9.5h.UV index
In La Unión, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Unión, Spain
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The months with the lowest average high temperature are January and February (14.9°C).
- Average low temperature in September: 22.9°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 (12°C).
Average pressure in September
La Unión, Spain
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1021.9mbar).
The month with the lowest atmospheric pressure is April (1014.9mbar).
Average wind speed in September
La Unión, Spain
- Average wind speed in September: 14.9km/h
The windiest month (with the highest average wind speed) is February (19.3km/h).
The calmest month (with the lowest average wind speed) is October (13.7km/h).
Average humidity in September
La Unión, Spain
- Average humidity in September: 71%
The month with the highest relative humidity is August (75%).
The month with the lowest relative humidity is November (66%).
Average rainfall in September
La Unión, Spain
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is September (26mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
La Unión, Spain
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (8.6 days).
The months with the least rainy days are July and August (2.4 days).
Average daylight in September /
Average sunshine in September
La Unión, Spain
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
La Unión, Spain
- Average sunshine days in September: 24.7 days
The month with the most sunshine days is July (28.5 days).
The months with the least sunshine days are February and March (21.2 days).
Average UV index in September
La Unión, 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, November and December (UV index 4).
Average cloud cover in September
La Unión, Spain
- Average cloud cover in September: 17
The month with the most cloud cover is March (Cloud cover 26).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in September
La Unión, 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).
