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
The start of September marks an average high-temperature of a still warm 26°C (78.8°F), hardly distinguishable from the conditions in August. In the month of September, the nighttime temperature in Loulé dips to a steady average of 18.8°C (65.8°F).Humidity
The average relative humidity in September is 65%.Rainfall
In Loulé, during September, the rain falls for 3.5 days and regularly aggregates up to 4mm (0.16") of precipitation. Throughout the year, there are 55.7 rainfall days, and 106mm (4.17") of precipitation is accumulated.Sea temperature
August and September, with an average sea temperature of 21°C (69.8°F), are months with the warmest seawater.Note: In 21°C (69.8°F), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 21°C (69.8°F).
Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 07:03 and sunset at 20:00. On the last day of September, sunrise is at 07:27 and sunset at 19:16 WEST.
Sunshine
In September, the average sunshine is 9.6h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, an average UV index of 6 transforms into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What is the usual temperature for Loulé in September?
What is the average humidity in September in Loulé?
How many days does it rain in September in Loulé?
When is the sea warmest in Loulé?
What is the sea temperature in September in Loulé?
How many hours of daylight does Loulé have in September?
When is the sunrise / sunset in September in Loulé?
How long on average sun shines in September in Loulé?
What are the months with the highest UV index in Loulé?
What is the UV index intensity in September in Loulé?
Average temperature in September
Loulé, Portugal
- Average high temperature in September: 26°C
The warmest month (with the highest average high temperature) is August (28.9°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in September: 18.8°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 (9.6°C).
Average pressure in September
Loulé, 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
Loulé, Portugal
- Average wind speed in September: 11.5km/h
The windiest months (with the highest average wind speed) are February and March (16.9km/h).
The calmest month (with the lowest average wind speed) is September (11.5km/h).
Average humidity in September
Loulé, Portugal
- Average humidity in September: 65%
The months with the highest relative humidity are January and December (76%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Loulé, Portugal
- Average rainfall in September: 4mm
The wettest month (with the highest rainfall) is November (20mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in September
Loulé, Portugal
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is April (9 days).
The month with the least rainy days is August (0.6 days).
Average sea temperature in September
Loulé, 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
Loulé, 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: 5h and 54min).
Average sunshine days in September
Loulé, Portugal
- Average sunshine days in September: 25.5 days
The month with the most sunshine days is July (29.5 days).
The month with the least sunshine days is April (18.5 days).
Average UV index in September
Loulé, 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 month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Loulé, Portugal
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Loulé, 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).
Loulé, Portugal
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