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 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
Rio Meão starts September with an average high-temperature of a still warm 24.9°C (76.8°F), hinting at a minimal fluctuation from August. Rio Meão observes an average low-temperature of 14.6°C (58.3°F) during September.Humidity
August and September, with an average relative humidity of 67%, are the least humid months in Rio Meão.Rainfall
In Rio Meão, in September, it is raining for 5.6 days, with typically 26mm (1.02") of accumulated precipitation. Throughout the year, there are 126.3 rainfall days, and 725mm (28.54") of precipitation is accumulated.Daylight
The average length of the day in September in Rio Meão is 12h and 28min.On the first day of September, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
In Rio Meão, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Rio Meão is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 5 during September leads to these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's recommended to limit sun exposure when its radiation is at its peak during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What is the average September temperature in Rio Meão?
What is the least humid month in Rio Meão?
What is the average humidity in September in Rio Meão?
How many days does it rain in September in Rio Meão?
How many hours of daylight does Rio Meão have in September?
What time are sunrise and sunset in September in Rio Meão?
How long on average sun shines in September in Rio Meão?
How high is the UV index in September in Rio Meão?
Average temperature in September
Rio Meão, Portugal
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 14.6°C
The month with the highest average low temperature is August (15.5°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).
Average pressure in September
Rio Meão, Portugal
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Rio Meão, Portugal
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in September
Rio Meão, Portugal
- Average humidity in September: 67%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (67%).
Average rainfall in September
Rio Meão, Portugal
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (109mm).
The driest month (with the least rainfall) is July (7mm).
Average rainfall days in September
Rio Meão, Portugal
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is November (15 days).
The month with the least rainy days is August (3.8 days).
Average daylight in September /
Average sunshine in September
Rio Meão, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Rio Meão, Portugal
- Average sunshine days in September: 23.2 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (13.6 days).
Average UV index in September
Rio Meão, 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
Rio Meão, Portugal
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Rio Meão, Portugal
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Rio Meão, Portugal
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