September weather forecastSilves, Portugal
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Silves, Portugal, with temperature in the range of an average high of 24.8°C (76.6°F) and an average low of 19.1°C (66.4°F).Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still warm 24.8°C (76.6°F) from August's 26.9°C (80.4°F). In the month of September, the average low-temperature in Silves usually rests at a refreshing 19.1°C (66.4°F).Humidity
The average relative humidity in September is 69%.Rainfall
June through September are months without rainfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 07:04 and sunset at 20:02. On the last day of the month, sunrise is at 07:28 and sunset at 19:18 WEST.
Sunshine
The average sunshine in September is 9.6h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index in Silves. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Silves, Portugal
- Average high temperature in September: 24.8°C
The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (15°C).
- Average low temperature in September: 19.1°C
The month with the highest average low temperature is August (19.7°C).
The coldest month (with the lowest average low temperature) is February (10.7°C).
Average pressure in September
Silves, Portugal
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Silves, Portugal
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is September (12.8km/h).
Average humidity in September
Silves, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is April (76%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in September
Silves, Portugal
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is November (8mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).
Average rainfall days in September
Silves, Portugal
- Average rainfall days in September: 1.2 days
The month with the highest number of rainy days is April (6.4 days).
The month with the least rainy days is August (0.2 days).
Average daylight in September /
Average sunshine in September
Silves, Portugal
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
Silves, Portugal
- Average sunshine days in September: 27.4 days
The month with the most sunshine days is July (30.5 days).
The month with the least sunshine days is November (22.1 days).
Average UV index in September
Silves, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Silves, Portugal
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in September
Silves, 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).
