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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 | 0.3 | 0.9 | 0.0 | 1.1 | 0.3 | 0.2 | 0.0 | 0.8 | 0.2 | 0.8 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.2 | 0.8 |
6.1
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| NOV | 2.5 | 4.1 | 0.4 | 0.7 | 0.8 | 0.2 | 2.1 | 1.7 | 1.0 | 0.2 | 0.3 | 0.6 | 0.9 | 0.3 | 0.3 | 0.0 | 0.6 | 1.3 | 0.7 | 0.0 | 1.6 | 1.9 | 0.5 | 0.2 | 1.4 | 0.3 | 0.0 | 1.4 | 1.2 | 0.8 | 0.0 |
28.0
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| OCT | 4.1 | 0.0 | 3.0 | 3.7 | 0.8 | 5.4 | 2.4 | 0.6 | 4.5 | 4.5 | 4.1 | 0.4 | 1.3 | 1.0 | 4.2 | 2.0 | 0.9 | 0.0 | 0.0 | 2.6 | 5.3 | 2.1 | 0.6 | 1.8 | 2.2 | 0.3 | 0.3 | 1.0 | 1.0 | 2.0 | 1.3 |
63.4
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| SEP | 0.0 | 0.7 | 0.8 | 0.3 | 6.5 | 7.3 | 9.3 | 8.9 | 3.9 | 1.4 | 4.0 | 1.8 | 1.8 | 0.0 | 1.4 | 3.6 | 3.0 | 4.0 | 1.5 | 4.4 | 6.8 | 7.0 | 6.3 | 2.5 | 1.0 | 3.2 | 2.9 | 2.7 | 3.5 | 0.2 | 0.0 |
100.7
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| AUG | 2.5 | 2.6 | 3.8 | 6.7 | 3.9 | 4.2 | 5.0 | 3.6 | 3.2 | 4.3 | 4.7 | 10.0 | 4.9 | 3.1 | 4.0 | 3.1 | 0.5 | 0.5 | 2.4 | 3.8 | 0.1 | 2.0 | 7.3 | 0.3 | 0.0 | 2.0 | 0.0 | 3.8 | 0.1 | 0.0 | 0.6 |
93.0
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| JUL | 10.9 | 7.2 | 8.8 | 5.7 | 4.8 | 3.0 | 3.4 | 2.0 | 4.5 | 5.5 | 4.6 | 2.2 | 2.4 | 10.9 | 5.8 | 10.3 | 8.5 | 0.0 | 0.6 | 1.6 | 7.9 | 9.7 | 0.9 | 3.7 | 3.5 | 7.2 | 1.5 | 3.1 | 8.5 | 0.9 | 1.8 |
151.4
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| JUN | 17.6 | 14.7 | 8.8 | 6.4 | 11.3 | 4.0 | 10.7 | 19.5 | 16.4 | 11.8 | 10.4 | 16.5 | 11.6 | 18.4 | 20.2 | 21.4 | 14.0 | 0.1 | 5.1 | 11.2 | 12.0 | 18.9 | 16.5 | 2.3 | 8.7 | 11.1 | 4.4 | 6.1 | 8.1 | 6.1 | 0.0 |
344.3
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| MAY | 5.2 | 6.8 | 1.1 | 4.8 | 19.3 | 11.9 | 13.6 | 6.8 | 13.1 | 11.2 | 7.5 | 13.4 | 11.1 | 12.3 | 5.6 | 10.1 | 14.3 | 14.7 | 17.2 | 2.4 | 5.3 | 9.3 | 6.6 | 10.3 | 9.8 | 5.8 | 14.7 | 13.4 | 15.9 | 12.1 | 12.7 |
318.3
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| APR | 6.5 | 9.5 | 6.5 | 10.6 | 9.8 | 10.6 | 10.5 | 10.3 | 9.2 | 11.8 | 12.8 | 9.6 | 11.1 | 12.8 | 15.5 | 12.7 | 21.7 | 19.0 | 16.4 | 19.1 | 18.4 | 22.2 | 16.7 | 20.0 | 11.5 | 13.2 | 0.3 | 5.1 | 12.2 | 16.8 | 0.0 |
382.4
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| MAR | 0.0 | 0.0 | 0.0 | 0.4 | 0.1 | 1.4 | 7.3 | 5.8 | 5.4 | 5.0 | 5.9 | 9.1 | 6.3 | 9.6 | 7.4 | 1.5 | 9.3 | 8.6 | 8.9 | 8.4 | 7.3 | 8.8 | 9.7 | 13.9 | 15.1 | 12.6 | 8.5 | 9.9 | 5.1 | 9.7 | 14.7 |
215.7
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| FEB | 6.0 | 1.2 | 0.9 | 3.2 | 1.8 | 3.2 | 2.5 | 2.0 | 2.5 | 7.9 | 7.4 | 4.0 | 3.8 | 1.0 | 3.1 | 3.9 | 5.4 | 3.9 | 0.2 | 0.1 | 3.0 | 2.3 | 4.8 | 3.6 | 6.9 | 8.3 | 8.2 | 6.8 | 0.0 | 0.0 | 0.0 |
107.9
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| JAN | 0.7 | 2.0 | 0.8 | 0.5 | 3.1 | 0.7 | 2.8 | 0.0 | 1.1 | 0.5 | 0.2 | 2.0 | 1.6 | 0.0 | 0.3 | 1.2 | 3.5 | 1.2 | 1.3 | 1.9 | 1.5 | 3.8 | 1.0 | 0.0 | 2.1 | 2.7 | 1.5 | 1.6 | 2.4 | 3.5 | 5.2 |
50.7
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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) |
| 2022 | 31.9 | 46.9 | 133.6 | 172.3 | 168.4 | 173.9 | 16.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
743.0
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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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Outlook for Wednesday to Friday: Wednesday fine and dry with sunny spells and light winds. Increasingly drier and brighter through Thursday and Friday with long periods of warm pleasant sunshine in light winds.
UK Outlook for Friday 8 Jul 2022 to Sunday 17 Jul 2022: High pressure builds from the southwest on Friday, which will come to define this period. Southern and eastern parts can expect the best of any fine and dry weather, light winds, and very warm temperatures. Cloud increases further northwest, with pulses of drizzle or light rain, mostly confined to high ground. However, some heavier outbreaks can't be ruled out in the far northwest, with moderate or fresh winds in the far north, and near normal temperatures. Into next week, far northern parts will fringe the high pressure which begins to centre over the UK, seeing more changeable weather: frequent cloud, showers, and possibly longer spells of rain. Beneath the high, a more settled regime persists, though showers are possible. Temperatures near or above average, to hot in the south.
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.