Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The dawn of September sees an average high-temperature of a still warm 26.4°C (79.5°F), subtly contrasting with August's 28.8°C (83.8°F). September nights show a substantial disparity from the daytime peak with an average low-temperature of 13.7°C (56.7°F).Humidity
The average relative humidity in September is 63%.Rainfall
In September, the rain falls for 6.5 days. Throughout September, 26mm (1.02") of precipitation is accumulated. Throughout the year, in Vale, there are 127.7 rainfall days, and 618mm (24.33") of precipitation is accumulated.Snowfall
May through October and December are months without snowfall.Daylight
The average length of the day in September in Vale, Portugal, is 12h and 28min.On the first day of September in Vale, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, sunrise is at 07:29 and sunset at 19:17 WEST.
Sunshine
In Vale, Portugal, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the average September temperature in Vale?
What is the average humidity in September in Vale?
How many days does it rain in September in Vale?
When it does not snow in Vale?
How many hours of daylight does Vale have in September?
What time are sunrise and sunset in September in Vale?
How long on average sun shines in September in Vale?
What is the UV index reading in September in Vale?
Average temperature in September
Vale, Portugal
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (12°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (4.3°C).
Average pressure in September
Vale, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Vale, Portugal
- Average wind speed in September: 7km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is September (7km/h).
Average humidity in September
Vale, Portugal
- Average humidity in September: 63%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Vale, Portugal
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (96mm).
The driest month (with the least rainfall) is July (6mm).
Average rainfall days in September
Vale, Portugal
- Average rainfall days in September: 6.5 days
The months with the highest number of rainy days are January and April (14.7 days).
The month with the least rainy days is August (3.9 days).
Average snowfall in September
Vale, Portugal
- Average snowfall in September: 0mm
The months with the highest snowfall are January and March (2mm).
The months with the least snowfall are May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Vale, Portugal
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and March (0.3 days).
The months with the least snowfall days are May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Vale, Portugal
- Average daylight in September: 12h and 3min
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 1min
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 0min).
Average sunshine days in September
Vale, Portugal
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.5 days).
Average UV index in September
Vale, Portugal
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Vale, Portugal
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Vale, 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).
Vale, Portugal
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