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
September
Weather in September
Temperature
The advent of September observes an average high-temperature of a still comfortable 16.2°C (61.2°F), nearly identical to August's 17.4°C (63.3°F). In Portreath, September nights maintain a consistent temperature, with an average low of 14.8°C (58.6°F).Humidity
In Portreath, United Kingdom, the average relative humidity in September is 82%.Rainfall
In Portreath, during September, the rain falls for 15.3 days and regularly aggregates up to 37mm (1.46") of precipitation. Throughout the year, there are 208 rainfall days, and 658mm (25.91") of precipitation is accumulated.Snowfall
In Portreath, snow does not fall in January, April through December.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:36 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:01 pm BST.
Sunshine
The average sunshine in September in Portreath is 7.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Portreath?
What is the average humidity in September in Portreath?
How many days does it rain in September in Portreath?
When it does not snow in Portreath?
How many hours of daylight does Portreath have in September?
When are sunrise and sunset in September in Portreath?
How many hours of sunshine does Portreath have in September?
What is the UV index intensity in September in Portreath?
Average temperature in September
Portreath, United Kingdom
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is August (17.4°C).
The month with the lowest average high temperature is February (9.3°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (7.3°C).
Average pressure in September
Portreath, United Kingdom
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Portreath, United Kingdom
- Average wind speed in September: 25.1km/h
The windiest month (with the highest average wind speed) is December (34km/h).
The calmest month (with the lowest average wind speed) is July (21.6km/h).
Average humidity in September
Portreath, United Kingdom
- Average humidity in September: 82%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January, February, November and December (79%).
Average rainfall in September
Portreath, United Kingdom
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is November (98mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in September
Portreath, United Kingdom
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is November (22.1 days).
The month with the least rainy days is May (13.6 days).
Average snowfall in September
Portreath, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are February and March (1mm).
The months with the least snowfall are January, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Portreath, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Portreath, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 7h and 3min
The months with the most sunshine are April and May (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in September
Portreath, United Kingdom
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is May (14.7 days).
The month with the least sunshine days is December (5.1 days).
Average UV index in September
Portreath, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is August (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in September
Portreath, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in September
Portreath, United Kingdom
- 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).
