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 snowfall in September
- Average snowfall 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
September signals a slight drop in average high-temperature, sliding from August's warm 28.3°C (82.9°F) to a still moderately hot 24.3°C (75.7°F). Samil experiences a consistent, yet significant, drop from daily highs to a low-temperature of 11.5°C (52.7°F) throughout September.Humidity
In Samil, Portugal, the average relative humidity in September is 57%.Rainfall
In September, in Samil, Portugal, the rain falls for 7.2 days. Throughout September, 32mm (1.26") of precipitation is accumulated. In Samil, during the entire year, the rain falls for 141.7 days and collects up to 532mm (20.94") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Samil, Portugal, is 12h and 28min.On the first day of September, sunrise is at 06:53 and sunset at 20:00. On the last day of the month, sunrise is at 07:23 and sunset at 19:10 WEST.
Sunshine
In Samil, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What are September temperatures in Samil?
What is the average humidity in September in Samil?
How many days does it rain in September in Samil?
When it does not snow in Samil?
What is the average length of the day in September in Samil?
When is the sunrise / sunset in September in Samil?
How many hours of sunshine does Samil have in September?
What is the UV index reading in September in Samil?
Average temperature in September
Samil, Portugal
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is July (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).
Average pressure in September
Samil, Portugal
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1022.9mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Samil, Portugal
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is March (11.2km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).
Average humidity in September
Samil, Portugal
- Average humidity in September: 57%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Samil, Portugal
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (73mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in September
Samil, Portugal
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is April (17.6 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in September
Samil, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Samil, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Samil, Portugal
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Samil, Portugal
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is August (24.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index in September
Samil, Portugal
- Average UV index in September: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Samil, Portugal
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in September
Samil, Portugal
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, November and December (8km).
Samil, Portugal
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