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 advent of September presents an average high-temperature of a still moderately hot 24.6°C (76.3°F), maintaining a close correlation with the preceding month. In the month of September, the nighttime temperature dips to a steady average of 15.1°C (59.2°F).Humidity
September is the least humid month in Silveiros, with an average relative humidity of 68%.Rainfall
In Silveiros, in September, during 7.3 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, there are 139.3 rainfall days, and 934mm (36.77") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 07:01 and sunset at 20:07. On the last day of the month, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
In Silveiros, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Silveiros is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Take precautions - Protection against sunburn is recommended. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the temperature in September in Silveiros?
What is the least humid month in Silveiros?
What is the average humidity in September in Silveiros?
How much does it rain in Silveiros in September?
How many hours of daylight does Silveiros have in September?
What time are sunrise and sunset in September in Silveiros?
How many hours of sunshine does Silveiros have in September?
What is the UV index reading in September in Silveiros?
Average temperature in September
Silveiros, Portugal
- Average high temperature in September: 24.6°C
The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 15.1°C
The month with the highest average low temperature is August (15.5°C).
The coldest months (with the lowest average low temperature) are January and February (6.9°C).
Average pressure in September
Silveiros, Portugal
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1022.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Silveiros, Portugal
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is February (11.4km/h).
The calmest month (with the lowest average wind speed) is September (8.8km/h).
Average humidity in September
Silveiros, Portugal
- Average humidity in September: 68%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is September (68%).
Average rainfall in September
Silveiros, Portugal
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is November (144mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in September
Silveiros, Portugal
- Average rainfall days in September: 7.3 days
The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is August (4.8 days).
Average daylight in September /
Average sunshine in September
Silveiros, 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 12min).
- Average sunshine in September: 9h and 0min
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 48min).
Average sunshine days in September
Silveiros, Portugal
- Average sunshine days in September: 21 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is November (12.5 days).
Average UV index in September
Silveiros, 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, March, November and December (UV index 3).
Average cloud cover in September
Silveiros, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Silveiros, 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).
Silveiros, Portugal
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