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 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's arrival registers an average high-temperature of a refreshing 19.2°C (66.6°F), closely aligning with the temperature of the previous month. Nighttime temperatures in Saint-Quay-Portrieux consistently average a fresh 11.5°C (52.7°F) during September.Humidity
September is the least humid month in Saint-Quay-Portrieux, France, with an average relative humidity of 81%.Rainfall
The month with the least rainfall is September, when the rain falls for 11 days and typically collects 18mm (0.71") of precipitation.Snowfall
May through October are months without snowfall in Saint-Quay-Portrieux.Sea temperature
The month with the warmest seawater in Saint-Quay-Portrieux is September, with an average sea temperature of 18°C (64.4°F).Note: Swimming in water with a temperature of 18°C (64.4°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
In September, the average length of the day is 12h and 35min.On the first day of September, sunrise is at 07:29 and sunset at 20:53. On the last day of the month, sunrise is at 08:10 and sunset at 19:52 CEST.
Sunshine
The average sunshine in September in Saint-Quay-Portrieux is 7.2h.UV index
The average daily maximum UV index in September in Saint-Quay-Portrieux is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What is the usual temperature for Saint-Quay-Portrieux in September?
What is the least humid month in Saint-Quay-Portrieux?
What is the average humidity in September in Saint-Quay-Portrieux?
What is the driest month in Saint-Quay-Portrieux?
How many days does it rain in September in Saint-Quay-Portrieux?
When it does not snow in Saint-Quay-Portrieux?
What month is the sea warmest in Saint-Quay-Portrieux?
How cold is the water in September in Saint-Quay-Portrieux?
How many hours of daylight does Saint-Quay-Portrieux have in September?
When are sunrise and sunset in September in Saint-Quay-Portrieux?
How long on average sun shines in September in Saint-Quay-Portrieux?
How high is the UV index in September in Saint-Quay-Portrieux?
Average temperature in September
Saint-Quay-Portrieux, France
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is August (20.6°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in September
Saint-Quay-Portrieux, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is September (1018.3mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in September
Saint-Quay-Portrieux, France
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is February (21.3km/h).
The calmest month (with the lowest average wind speed) is August (13.8km/h).
Average humidity in September
Saint-Quay-Portrieux, France
- Average humidity in September: 81%
The months with the highest relative humidity are January, November and December (85%).
The month with the lowest relative humidity is September (81%).
Average rainfall in September
Saint-Quay-Portrieux, France
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
Saint-Quay-Portrieux, France
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is November (17.4 days).
The month with the least rainy days is September (11 days).
Average snowfall in September
Saint-Quay-Portrieux, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (13mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Saint-Quay-Portrieux, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Saint-Quay-Portrieux, France
- Average sea temperature in September: 18°C
The best month for swimming (with the highest average sea temperature) is September (18°C).
The coldest months (with the lowest average sea temperature) are February and March (9°C).
Average daylight in September /
Average sunshine in September
Saint-Quay-Portrieux, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Saint-Quay-Portrieux, France
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is November (8.3 days).
Average UV index in September
Saint-Quay-Portrieux, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Saint-Quay-Portrieux, France
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 42).
Average visibility in September
Saint-Quay-Portrieux, France
- 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).
Saint-Quay-Portrieux, France
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