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
The weather during September records an average high-temperature of a still comfortable 16.3°C (61.3°F), closely mirroring the preceding month. September nights anticipate an average temperature of 14.9°C (58.8°F), a modest decline from the daytime.Humidity
In September, the average relative humidity in Penzance is 82%.Rainfall
In Penzance, in September, during 9.8 rainfall days, 13mm (0.51") of precipitation is typically accumulated. In Penzance, during the entire year, the rain falls for 145.1 days and collects up to 224mm (8.82") of precipitation.Snowfall
February through December are months without snowfall in Penzance.Sea temperature
In Penzance, in September, the average water temperature is 16.5°C (61.7°F).Note: For most people, swimming in water at 16.5°C (61.7°F) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Penzance, United Kingdom, is 12h and 37min.On the first day of the month, sunrise is at 6:37 am and sunset at 8:06 pm. On the last day of September, in Penzance, sunrise is at 7:21 am and sunset at 7:02 pm BST.
Sunshine
In September, the average sunshine in Penzance is 7.4h.UV index
In Penzance, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the average September temperature in Penzance?
What is the average humidity in September in Penzance?
How many days does it rain in September in Penzance?
When it does not snow in Penzance?
How cold is the water in September in Penzance?
How many hours of daylight does Penzance have in September?
When is the sunrise / sunset in September in Penzance?
How long on average sun shines in September in Penzance?
What is the UV index reading in September in Penzance?
Average temperature in September
Penzance, United Kingdom
- Average high temperature in September: 16.3°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 (9.4°C).
- Average low temperature in September: 14.9°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (7.3°C).
Average pressure in September
Penzance, 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 (1010.4mbar).
Average wind speed in September
Penzance, United Kingdom
- Average wind speed in September: 25.4km/h
The windiest month (with the highest average wind speed) is December (34.4km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).
Average humidity in September
Penzance, 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
Penzance, United Kingdom
- Average rainfall in September: 13mm
The wettest month (with the highest rainfall) is November (36mm).
The driest month (with the least rainfall) is May (10mm).
Average rainfall days in September
Penzance, United Kingdom
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is November (16.3 days).
The month with the least rainy days is June (9.2 days).
Average snowfall in September
Penzance, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (1mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Penzance, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Penzance, United Kingdom
- Average sea temperature in September: 16.5°C
The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).
Average daylight in September /
Average sunshine in September
Penzance, 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 2min
The month with the most sunshine is April (Average sunshine: 8h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Penzance, United Kingdom
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is May (19.2 days).
The month with the least sunshine days is November (9.7 days).
Average UV index in September
Penzance, 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
Penzance, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 42).
Average visibility in September
Penzance, 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).
Penzance, United Kingdom
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