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Sunshine Hours
How long has the sun been out today...
Traditionally, the World Meteorological
Organisation, WMO, defines a sunshine hour as “the sum of the time intervals (in
hours) during which the direct normal solar irradiance exceeds a threshold of
120 W/m2”. Recently, the WMO has approved the “pyranometric method” of
calculating sunshine duration from pyranometer measurements (WMO-No. 8, Guide to
Meteorological Instruments). Inside the Mountsorrel & Rothley Weather Station, a
software algorithm calculates sunshine hours by first calculating the 1-second
maximum potential solar radiation possible (clear sky, bright sun) based on the
time and location of the sun proximity to the weather station. If the weather
station' Pyranometer output is greater than 40% of the maximum potential direct solar radiation, then a sun second is recorded. These sun seconds are then totalled up to calculate sun hours per day.
Leicestershire averages 1364 hours of sun a year
Recorded
Sunshine Hours by Month (2021) |
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2021 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | TOTAL(hrs) |
DEC | 0.2 | 0.0 | 0.0 | 0.0 | 0.4 | 0.3 | 0.0 | 1.2 | 0.0 | 0.5 | 1.1 | 0.3 | 0.0 | 0.6 | 0.0 | 0.9 | 0.0 | 0.1 | 0.0 | 0.5 | 0.7 | 0.0 | 0.3 | 0.1 | 0.2 | 1.0 | 0.0 | 0.2 | 0.2 | 0.0 | 0.8 |
9.6
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NOV | 2.1 | 0.7 | 2.9 | 0.0 | 1.5 | 3.7 | 3.0 | 0.0 | 1.6 | 2.1 | 3.8 | 0.0 | 2.1 | 0.2 | 3.1 | 0.0 | 2.1 | 0.0 | 0.1 | 1.0 | 0.5 | 0.1 | 2.0 | 1.4 | 2.4 | 0.0 | 0.0 | 2.1 | 2.3 | 1.9 | 0.0 |
42.7
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OCT | 0.1 | 1.6 | 7.9 | 6.0 | 2.7 | 3.8 | 6.0 | 4.1 | 4.7 | 6.7 | 3.8 | 1.2 | 1.6 | 4.3 | 5.7 | 2.7 | 8.0 | 1.6 | 2.1 | 0.0 | 0.3 | 5.1 | 3.0 | 1.9 | 2.5 | 0.7 | 2.7 | 1.1 | 3.7 | 2.9 | 0.6 |
99.1
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SEP | 2.9 | 6.4 | 9.4 | 12.4 | 8.0 | 8.5 | 8.6 | 8.8 | 8.5 | 2.9 | 5.2 | 2.7 | 9.8 | 3.6 | 8.4 | 6.4 | 5.1 | 3.5 | 0.3 | 0.1 | 8.1 | 5.3 | 4.1 | 3.5 | 9.1 | 4.4 | 1.3 | 4.5 | 6.6 | 2.1 | 0.0 |
170.5
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AUG | 5.3 | 8.4 | 7.3 | 3.9 | 0.4 | 8.5 | 9.5 | 4.5 | 13.7 | 12.3 | 12.8 | 9.1 | 9.3 | 2.0 | 8.5 | 16.1 | 9.2 | 5.4 | 7.4 | 11.0 | 9.9 | 6.7 | 9.5 | 7.6 | 7.9 | 6.3 | 3.9 | 5.9 | 6.0 | 10.1 | 6.6 |
245.0
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JUL | 3.8 | 7.0 | 8.6 | 9.2 | 4.8 | 10.0 | 16.2 | 5.6 | 5.2 | 5.0 | 3.8 | 10.1 | 4.4 | 1.5 | 8.9 | 5.4 | 12.6 | 7.6 | 11.0 | 5.9 | 7.5 | 2.5 | 6.3 | 3.9 | 4.8 | 12.1 | 7.6 | 9.4 | 13.5 | 7.5 | 7.9 |
229.6
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JUN | 1.3 | 18.3 | 12.7 | 9.4 | 4.8 | 3.3 | 8.6 | 13.6 | 14.2 | 13.7 | 11.8 | 9.5 | 15.5 | 15.1 | 13.6 | 15.8 | 8.4 | 7.9 | 13.5 | 6.8 | 17.3 | 11.8 | 7.7 | 11.3 | 15.1 | 14.1 | 4.2 | 4.7 | 13.4 | 1.8 | 0.0 |
319.2
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MAY | 8.6 | 8.3 | 10.4 | 12.0 | 10.5 | 6.3 | 8.6 | 6.3 | 8.9 | 12.8 | 10.4 | 3.7 | 6.3 | 5.7 | 10.6 | 7.4 | 9.2 | 7.5 | 11.2 | 13.8 | 11.2 | 7.9 | 5.0 | 13.1 | 12.9 | 14.2 | 17.1 | 5.6 | 9.7 | 0.9 | 0.3 |
276.4
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APR | 1.7 | 6.8 | 9.3 | 11.4 | 4.9 | 9.1 | 12.2 | 8.8 | 4.4 | 4.3 | 7.8 | 9.8 | 10.8 | 4.6 | 7.2 | 4.3 | 7.5 | 13.6 | 6.4 | 15.8 | 6.8 | 7.6 | 1.9 | 4.3 | 9.3 | 7.1 | 1.8 | 2.7 | 9.4 | 12.3 | 0.0 |
223.9
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MAR | 2.5 | 2.2 | 5.5 | 5.1 | 2.3 | 3.2 | 4.7 | 1.5 | 2.3 | 2.9 | 4.7 | 5.2 | 1.8 | 6.1 | 6.7 | 4.2 | 5.3 | 4.6 | 3.8 | 1.4 | 3.2 | 8.4 | 10.8 | 14.1 | 3.4 | 4.9 | 8.6 | 3.0 | 4.0 | 9.5 | 0.9 |
146.8
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FEB | 5.1 | 2.8 | 2.8 | 0.1 | 5.1 | 5.5 | 6.4 | 5.0 | 5.9 | 3.3 | 2.2 | 5.3 | 3.2 | 2.4 | 5.9 | 3.3 | 2.2 | 2.1 | 8.9 | 9.0 | 0.4 | 0.4 | 7.9 | 7.2 | 6.6 | 5.9 | 4.0 | 0.1 | 0.0 | 0.0 | 0.0 |
119.0
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JAN | 2.7 | 0.7 | 0.7 | 0.8 | 0.1 | 2.6 | 0.2 | 1.5 | 2.1 | 0.6 | 1.4 | 0.0 | 3.1 | 1.0 | 4.1 | 2.8 | 2.8 | 3.7 | 4.0 | 2.4 | 2.5 | 2.7 | 1.4 | 5.2 | 0.1 | 3.1 | 0.6 | 3.2 | 1.7 | 4.6 | 3.4 |
65.8
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Recordred Sunshine Hours by Year |
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YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | TOTAL(hrs) |
2024 | 31.6 | 47.1 | 81.4 | 75.6 | 92.3 | 104.8 | 93.2 | 86.4 | 43.8 | 30.5 | 0.3 | 0.0 |
687.0
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2023 | 34.2 | 71.9 | 65.4 | 148.3 | 184.1 | 214.4 | 136.4 | 158.6 | 126.7 | 68.6 | 42.4 | 9.6 |
1260.6
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2022 | 31.9 | 46.9 | 133.6 | 172.3 | 168.4 | 173.9 | 192.1 | 211.4 | 93.8 | 85.4 | 23.5 | 17.4 |
1350.6
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2021 | 18.8 | 61.0 | 82.1 | 210.1 | 149.9 | 170.4 | 135.4 | 93.0 | 100.7 | 63.4 | 28.0 | 6.1 |
1118.9
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2020 | 29.2 | 69.8 | 133.8 | 232.5 | 258.3 | 152.7 | 149.5 | 143.2 | 156.3 | 44.0 | 34.5 | 14.6 |
1418.4
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2019 | 0.0 | 0.0 | 0.0 | 134.4 | 148.1 | 120.2 | 151.1 | 172.0 | 141.9 | 76.4 | 24.5 | 19.5 |
988.1
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UK Outlook for Friday 15 Nov 2024 to Sunday 24 Nov 2024: Still mostly dry on Friday, if rather cloudy across many regions. Turning more unsettled into next weekend with low pressure probably becoming established close to the UK bringing rain or showers to most regions. The heaviest and most frequent spells of rain are most likely in the north and west. Drier and brighter spells of weather remain possible, particularly in southern regions. Some wintry precipitation is possible in places, with snow most likely to fall over high ground in the north. The chance of any widespread or disruptive snowfall is very low. Often windy, with a chance of gales at times, especially in the north and east. Temperatures probably near or below average with overnight patchy frost and ice.
UK Outlook for Monday 25 Nov 2024 to Monday 9 Dec 2024: Signals vary in prevailing weather patterns through this period but likely more unsettled than during early November. There is a greater chance of more mobile weather patterns which would see Atlantic systems periodically move across the country. These bringing some wetter and windier interludes followed by drier periods. Some colder interludes, especially earlier in the period, are possible but overall temperatures more likely to be around or above average.
Mountsorrel is a village in Leicestershire on the River Soar, just south of Loughborough with a population of 6,662 inhabitants. A castle was built in 1080 by Hugh Lupus, but there is evidence of an earlier Norman settlement in the area in the form
of pottery fragments. A Roman villa is supposed to have existed on Broad Hill during the 4th century AD, the site of today's quarry, as quarrying during the late 1800s revealed many artefacts including a preserved wooden bucket. However, the first recording of the village was in 1377, when it had a population of 156.
The Mountsorrel Weather Station is located in Mountsorrel which is just South of Loughborough andjust North of Leicester, Leicestershire.
This website is non for profit and is freely maintained by Stormchaser Stuart Robinson whose passion is for all type of weather but especially the more severe types of weather such as Hurricanes, Typhoons and Tornadoes.
Stuart oftens travels the globle to experabce severe weather first after seeing his first tornado outside a town called Stuart in Nebraska, USA on the 9th June 2003.