September weather forecastForles, Portugal
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Forles, Portugal, with an average temperature fluctuating between 26.5°C (79.7°F) and 12.5°C (54.5°F).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from 29.6°C (85.3°F) in August to a still warm 26.5°C (79.7°F). Forles documents a substantial deviation from daytime highs with a consistent low-temperature of 12.5°C (54.5°F) during September nights.Humidity
In Forles, the average relative humidity in September is 60%.Rainfall
In Forles, Portugal, in September, during 6.2 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, there are 125.4 rainfall days, and 553mm (21.77") of precipitation is accumulated.Snowfall
In Forles, Portugal, snow does not fall in April through October and December.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 06:58 and sunset at 20:02. On the last day of September, sunrise is at 07:26 and sunset at 19:14 WEST.
Sunshine
In September, the average sunshine in Forles, Portugal, is 9.3h.UV index
In Forles, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Forles, Portugal
- Average high temperature in September: 26.5°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (10.7°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).
Average pressure in September
Forles, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Forles, Portugal
- Average wind speed in September: 7km/h
The windiest month (with the highest average wind speed) is March (9.1km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).
Average humidity in September
Forles, Portugal
- Average humidity in September: 60%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (57%).
Average rainfall in September
Forles, Portugal
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (92mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in September
Forles, Portugal
- Average rainfall days in September: 6.2 days
The month with the highest number of rainy days is November (15.5 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in September
Forles, Portugal
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Forles, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Forles, Portugal
- 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 18min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Forles, Portugal
- Average sunshine days in September: 22.9 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is April (13 days).
Average UV index in September
Forles, Portugal
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Forles, Portugal
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Forles, Portugal
- Average visibility in September: 9km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and November (7km).
