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 sea temperature 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 observes an average high-temperature of a still moderately hot 25.7°C (78.3°F), marking an insignificant difference from August's 28.3°C (82.9°F). September nights in Almancil cool down to an average low-temperature of 19.2°C (66.6°F).Humidity
The average relative humidity in September in Almancil is 66%.Rainfall
Months with rainfall are January through June, September through December. September is the first month it rains. Throughout September, in the average 2.4 rainfall days, it receives 2mm (0.08") of precipitation. Throughout the year, there are 46.1 rainfall days, and 69mm (2.72") of precipitation is accumulated.Sea temperature
The months with the warmest seawater in Almancil are August and September, with an average sea temperature of 21°C (69.8°F).Note: Swimming in 21°C (69.8°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
The average length of the day in September in Almancil is 12h and 25min.On the first day of September, sunrise is at 07:03 and sunset at 20:00. On the last day of the month, sunrise is at 07:27 and sunset at 19:16 WEST.
Sunshine
In September, the average sunshine in Almancil, Portugal, is 9.6h.UV index
May through September, with an average maximum UV index of 6, are months with the highest UV index in Almancil. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the temperature in September in Almancil?
What is the average humidity in September in Almancil?
When does it start to rain in Almancil?
What months are the sea warmest in Almancil?
What is the sea temperature in September in Almancil?
What is the average length of the day in September in Almancil?
What time are sunrise and sunset in September in Almancil?
How long on average sun shines in September in Almancil?
When is the highest UV index in Almancil?
What is the UV index reading in September in Almancil?
Average temperature in September
Almancil, Portugal
- Average high temperature in September: 25.7°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 (14.9°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is August (20°C).
The coldest month (with the lowest average low temperature) is February (10.2°C).
Average pressure in September
Almancil, Portugal
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Almancil, Portugal
- Average wind speed in September: 12km/h
The windiest months (with the highest average wind speed) are February and March (17.7km/h).
The calmest month (with the lowest average wind speed) is September (12km/h).
Average humidity in September
Almancil, Portugal
- Average humidity in September: 66%
The months with the highest relative humidity are January, April and December (75%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Almancil, Portugal
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is November (14mm).
The driest months (with the least rainfall) are July and August (0mm).
Average rainfall days in September
Almancil, Portugal
- Average rainfall days in September: 2.4 days
The month with the highest number of rainy days is April (7.1 days).
The month with the least rainy days is August (0.3 days).
Average sea temperature in September
Almancil, Portugal
- Average sea temperature in September: 21°C
The best months for swimming (with the highest average sea temperature) are August and September (21°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in September /
Average sunshine in September
Almancil, Portugal
- Average daylight in September: 12h and 2min
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 4min
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
Almancil, Portugal
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is July (30 days).
The month with the least sunshine days is April (21.4 days).
Average UV index in September
Almancil, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, 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
Almancil, Portugal
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Almancil, 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).
Almancil, Portugal
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