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 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
September's arrival shows an average high-temperature of a still comfortable 16.2°C (61.2°F), hardly different from the previous month. Porthcurno welcomes an average low temperature of 14.6°C (58.3°F) in September, a gentle shift from the day's high.Humidity
The average relative humidity in September is 82%.Rainfall
In Porthcurno, in September, during 14.1 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, there are 199.8 rainfall days, and 620mm (24.41") of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In September, the average length of the day in Porthcurno is 12h and 37min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:06 pm. On the last day of September, in Porthcurno, sunrise is at 7:21 am and sunset at 7:02 pm BST.
Sunshine
In Porthcurno, the average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index in Porthcurno is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Porthcurno in September?
What is the average humidity in September in Porthcurno?
How many days does it rain in September in Porthcurno?
When it does not snow in Porthcurno?
How many hours of daylight does Porthcurno have in September?
When are sunrise and sunset in September in Porthcurno?
How many hours of sunshine does Porthcurno have in September?
What is the UV index intensity in September in Porthcurno?
Average temperature in September
Porthcurno, United Kingdom
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is August (17.3°C).
The month with the lowest average high temperature is February (9.3°C).
- Average low temperature in September: 14.6°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (7.4°C).
Average pressure in September
Porthcurno, United Kingdom
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Porthcurno, United Kingdom
- Average wind speed in September: 25.8km/h
The windiest month (with the highest average wind speed) is December (34.8km/h).
The calmest month (with the lowest average wind speed) is July (22.4km/h).
Average humidity in September
Porthcurno, United Kingdom
- Average humidity in September: 82%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is February (78%).
Average rainfall in September
Porthcurno, United Kingdom
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is November (93mm).
The driest month (with the least rainfall) is May (29mm).
Average rainfall days in September
Porthcurno, United Kingdom
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is November (21.1 days).
The month with the least rainy days is June (12.7 days).
Average snowfall days in September
Porthcurno, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Porthcurno, 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 12min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are April, May and July (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Porthcurno, United Kingdom
- Average sunshine days in September: 12 days
The month with the most sunshine days is June (15.4 days).
The month with the least sunshine days is December (5.5 days).
Average UV index in September
Porthcurno, 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
Porthcurno, United Kingdom
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 44).
Average visibility in September
Porthcurno, 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).
