September weather forecastAlfeite, Portugal
September weather for Alfeite, Portugal: The first month of the autumn, September, is also a moderately hot month in Alfeite, Portugal, with temperature in the range of an average high of 25.6°C (78.1°F) and an average low of 17.5°C (63.5°F). On the first day of September in Alfeite, Portugal, sunrise is at 07:06 and sunset at 20:06.
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Alfeite, Portugal, with temperature in the range of an average high of 25.6°C (78.1°F) and an average low of 17.5°C (63.5°F).Temperature
The unfolding of September shows an average high-temperature of a still moderately hot 25.6°C (78.1°F), indicating a slight variance from August's 27.1°C (80.8°F). Alfeite's average low-temperature in September is measured at a comfortable 17.5°C (63.5°F).Humidity
In Alfeite, Portugal, the average relative humidity in September is 69%.Rainfall
In September, in Alfeite, the rain falls for 3.1 days. Throughout September, 2mm (0.08") of precipitation is accumulated. In Alfeite, during the entire year, the rain falls for 54.2 days and collects up to 61mm (2.4") of precipitation.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 07:06 and sunset at 20:06. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
In Alfeite, the average sunshine in September is 9.4h.UV index
May through September, with an average maximum UV index of 6, are months with the highest UV index in Alfeite, Portugal. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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Frequently asked questions
Average temperature in September
Alfeite, Portugal
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in September: 17.5°C
The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).
Average pressure in September
Alfeite, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Alfeite, Portugal
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13.1km/h).
Average humidity in September
Alfeite, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Alfeite, Portugal
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).
Average rainfall days in September
Alfeite, Portugal
- Average rainfall days in September: 3.1 days
The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).
Average daylight in September /
Average sunshine in September
Alfeite, Portugal
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Alfeite, Portugal
- Average sunshine days in September: 26.3 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).
Average UV index in September
Alfeite, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Alfeite, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Alfeite, Portugal
- 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).
