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
The commencement of September brings an average high-temperature of a still pleasant 22.2°C (72°F), marking an inconsequential divergence from August. Nighttime temperature in Rosais sees a small decrement from daytime highs, dipping to an average of 20.6°C (69.1°F) during September.Humidity
The months with the lowest humidity are September and November, with an average relative humidity of 78%.Rainfall
In September, in Rosais, the rain falls for 16.2 days. Throughout September, 45mm (1.77") of precipitation is accumulated. In Rosais, during the entire year, the rain falls for 204.1 days and collects up to 744mm (29.29") of precipitation.Daylight
In September, the average length of the day in Rosais is 12h and 26min.On the first day of September in Rosais, sunrise is at 07:22 and sunset at 20:22. On the last day of the month, sunrise is at 07:48 and sunset at 19:37 +00.
Sunshine
The average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September in Rosais is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the temperature in September in Rosais?
What are the least humid months in Rosais?
What is the average humidity in September in Rosais?
How many days does it rain in September in Rosais?
How many hours of daylight does Rosais have in September?
What time are sunrise and sunset in September in Rosais?
How many hours of sunshine does Rosais have in September?
How high is the UV index in September in Rosais?
Average temperature in September
Rosais, Portugal
- Average high temperature in September: 22.2°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is March (15.3°C).
- Average low temperature in September: 20.6°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is March (13.8°C).
Average pressure in September
Rosais, Portugal
- Average pressure in September: 1021.1mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is October (1016.8mbar).
Average wind speed in September
Rosais, Portugal
- Average wind speed in September: 17.8km/h
The windiest month (with the highest average wind speed) is December (25.6km/h).
The calmest month (with the lowest average wind speed) is July (14.4km/h).
Average humidity in September
Rosais, Portugal
- Average humidity in September: 78%
The month with the highest relative humidity is June (83%).
The months with the lowest relative humidity are September and November (78%).
Average rainfall in September
Rosais, Portugal
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in September
Rosais, Portugal
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is October (20 days).
The month with the least rainy days is July (13.6 days).
Average daylight in September /
Average sunshine in September
Rosais, Portugal
- Average daylight in September: 12h and 2min
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: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in September
Rosais, Portugal
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is July (11 days).
The months with the least sunshine days are February and December (6.3 days).
Average UV index in September
Rosais, Portugal
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, May, November and December (UV index 4).
Average cloud cover in September
Rosais, Portugal
- Average cloud cover in September: 43
The months with the most cloud cover are January, March, November and December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Rosais, 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).
Rosais, Portugal
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