September weather forecastVermoim, Portugal
September weather forecast for Vermoim, Portugal: The first month of the autumn, September, is still a warm month in Vermoim, Portugal, with an average temperature varying between 23.2°C (73.8°F) and 15.6°C (60.1°F). In Vermoim, Portugal, in September, during 7.1 rainfall days, 23mm (0.91") of precipitation is typically accumulated.
September
Weather in September
The first month of the autumn, September, is still a warm month in Vermoim, Portugal, with an average temperature varying between 23.2°C (73.8°F) and 15.6°C (60.1°F).Temperature
The beginning of September records an average high-temperature of a still moderately hot 23.2°C (73.8°F), marking a negligible difference from August's 23.9°C (75°F). September nights cool down to an average low-temperature of 15.6°C (60.1°F).Humidity
The least humid month is September, with an average relative humidity of 71%.Rainfall
In Vermoim, in September, during 7.1 rainfall days, 23mm (0.91") of precipitation is typically accumulated. Throughout the year, there are 137.1 rainfall days, and 682mm (26.85") of precipitation is accumulated.Daylight
In Vermoim, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 07:01 and sunset at 20:07. On the last day of September, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. 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
Vermoim, Portugal
- Average high temperature in September: 23.2°C
The warmest month (with the highest average high temperature) is August (23.9°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 15.6°C
The month with the highest average low temperature is August (16.5°C).
The coldest month (with the lowest average low temperature) is February (8.1°C).
Average pressure in September
Vermoim, Portugal
- Average pressure in September: 1017.4mbar
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
Vermoim, Portugal
- Average wind speed in September: 10.7km/h
The windiest months (with the highest average wind speed) are February and November (14.3km/h).
The calmest month (with the lowest average wind speed) is September (10.7km/h).
Average humidity in September
Vermoim, Portugal
- Average humidity in September: 71%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is September (71%).
Average rainfall in September
Vermoim, Portugal
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in September
Vermoim, Portugal
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is August (4.6 days).
Average daylight in September /
Average sunshine in September
Vermoim, 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 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Vermoim, Portugal
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is November (11.9 days).
Average UV index in September
Vermoim, 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, November and December (UV index 3).
Average cloud cover in September
Vermoim, Portugal
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 18).
Average visibility in September
Vermoim, Portugal
- Average visibility in September: 10km
The months with the highest visibility are February, March, May, June, September, October and December (10km).
The months with the lowest visibility are January, April, July, August and November (9km).
