September weather forecastAgrelo, Portugal
September weather for Agrelo, Portugal: September, the first month of the autumn in Agrelo, is also a moderately hot month, with an average temperature ranging between min 13.8°C (56.8°F) and max 25.8°C (78.4°F). Throughout the month of September, Agrelo observes a dramatic downturn from the daytime peak temperatures, expecting an average low of 13.8°C (56.8°F).
September
Weather in September
September, the first month of the autumn in Agrelo, is also a moderately hot month, with an average temperature ranging between min 13.8°C (56.8°F) and max 25.8°C (78.4°F).Temperature
In September, Agrelo notes an average high-temperature of a still warm 25.8°C (78.4°F), hardly different from the preceding month. Throughout the month of September, Agrelo observes a dramatic downturn from the daytime peak temperatures, expecting an average low of 13.8°C (56.8°F).Humidity
The average relative humidity in September is 65%.Rainfall
In Agrelo, in September, during 7.4 rainfall days, 35mm (1.38") of precipitation is typically accumulated. In Agrelo, during the entire year, the rain falls for 139.7 days and collects up to 924mm (36.38") of precipitation.Snowfall
February through December are months without snowfall.Daylight
In Agrelo, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 06:59 and sunset at 20:05. On the last day of the month, sunrise is at 07:29 and sunset at 19:16 WEST.
Sunshine
The average sunshine in September in Agrelo, Portugal, is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Agrelo, Portugal
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (11.8°C).
- Average low temperature in September: 13.8°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is February (5°C).
Average pressure in September
Agrelo, Portugal
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Agrelo, Portugal
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).
Average humidity in September
Agrelo, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Agrelo, Portugal
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (136mm).
The driest month (with the least rainfall) is July (11mm).
Average rainfall days in September
Agrelo, Portugal
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is January (15.8 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in September
Agrelo, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is January (1mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Agrelo, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Agrelo, 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 12min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Agrelo, Portugal
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is August (24.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in September
Agrelo, Portugal
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in September
Agrelo, Portugal
- Average cloud cover in September: 26
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 23).
Average visibility in September
Agrelo, Portugal
- Average visibility in September: 9km
The months with the highest visibility are June, July, August and September (9km).
The month with the lowest visibility is January (7km).





