| |
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
Sunshine Hours by Month (2024) |
|
| |
| 2024 | 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) |
| JAN | 1.3 | 0.9 | 1.7 | 0.7 | 0.0 | 1.6 | 1.3 | 0.0 | 2.5 | 0.9 | 0.2 | 0.0 | 1.6 | 1.2 | 2.5 | 2.7 | 0.9 | 2.5 | 2.8 | 2.1 | 0.7 | 2.0 | 0.3 | 4.0 | 1.9 | 2.9 | 2.8 | 3.1 | 2.2 | 3.8 | 0.5 |
51.6
|
| FEB | 3.4 | 4.1 | 1.2 | 0.8 | 2.1 | 2.1 | 1.2 | 0.0 | 0.6 | 1.5 | 1.0 | 5.3 | 0.1 | 1.6 | 1.5 | 3.6 | 3.2 | 5.5 | 3.2 | 2.7 | 0.1 | 1.7 | 3.9 | 6.9 | 6.9 | 3.2 | 5.7 | 2.5 | 0.0 | 0.0 | 0.0 |
75.6
|
| MAR | 6.2 | 5.5 | 9.9 | 9.6 | 7.0 | 6.9 | 2.5 | 6.1 | 8.0 | 0.1 | 2.1 | 2.3 | 3.4 | 5.6 | 5.6 | 4.8 | 2.2 | 9.8 | 7.4 | 5.6 | 2.1 | 3.3 | 6.1 | 11.4 | 0.7 | 6.5 | 9.2 | 6.5 | 8.9 | 9.0 | 7.2 |
181.5
|
| APR | 7.8 | 9.1 | 6.8 | 4.8 | 10.1 | 11.4 | 8.5 | 8.2 | 5.7 | 7.3 | 10.1 | 9.4 | 5.6 | 6.4 | 5.1 | 7.2 | 9.5 | 5.1 | 2.6 | 8.8 | 6.3 | 6.3 | 6.2 | 4.2 | 6.1 | 6.1 | 7.2 | 8.0 | 10.9 | 14.2 | 0.0 |
225.0
|
| MAY | 8.0 | 8.8 | 4.5 | 6.9 | 6.9 | 7.1 | 7.1 | 6.5 | 12.5 | 14.1 | 12.7 | 10.8 | 12.0 | 8.2 | 1.9 | 7.7 | 7.4 | 4.4 | 11.7 | 9.4 | 7.1 | 2.0 | 5.3 | 1.2 | 9.2 | 4.7 | 5.4 | 5.8 | 7.0 | 4.1 | 5.3 |
225.7
|
| JUN | 5.0 | 13.2 | 4.5 | 6.0 | 5.2 | 6.6 | 4.8 | 9.0 | 4.1 | 9.9 | 7.3 | 7.4 | 9.0 | 1.9 | 2.8 | 4.1 | 4.4 | 3.5 | 3.0 | 4.4 | 6.1 | 4.0 | 3.7 | 4.1 | 10.1 | 8.1 | 9.5 | 9.9 | 4.1 | 7.1 | 0.0 |
182.8
|
| JUL | 3.4 | 5.7 | 6.8 | 10.7 | 3.4 | 4.7 | 8.3 | 10.1 | 4.2 | 8.6 | 7.6 | 9.1 | 3.1 | 5.9 | 3.5 | 1.9 | 5.6 | 10.9 | 5.8 | 0.7 | 10.0 | 3.4 | 5.0 | 2.5 | 6.8 | 5.9 | 3.9 | 8.2 | 8.2 | 7.3 | 11.1 |
192.3
|
| AUG | 4.9 | 7.8 | 3.2 | 2.4 | 3.6 | 6.9 | 2.7 | 8.1 | 8.6 | 6.9 | 10.5 | 7.9 | 11.9 | 1.6 | 6.3 | 5.7 | 6.6 | 3.6 | 1.4 | 4.0 | 3.0 | 3.1 | 4.6 | 1.3 | 8.1 | 4.3 | 3.1 | 3.4 | 5.3 | 6.9 | 6.3 |
164.0
|
| SEP | 3.7 | 2.3 | 1.3 | 3.1 | 2.7 | 4.3 | 1.7 | 5.3 | 3.2 | 1.1 | 4.1 | 4.9 | 6.1 | 4.5 | 3.0 | 5.8 | 2.4 | 0.8 | 1.5 | 0.2 | 4.1 | 2.9 | 1.6 | 2.7 | 4.6 | 1.6 | 0.7 | 4.5 | 4.2 | 3.4 | 0.0 |
92.3
|
| OCT | 0.8 | 0.9 | 3.2 | 3.9 | 4.3 | 2.9 | 2.5 | 2.0 | 1.4 | 1.4 | 3.6 | 0.8 | 1.6 | 0.0 | 0.0 | 0.0 | 2.9 | 1.1 | 0.9 | 0.0 | 0.0 | 1.2 | 1.1 | 1.1 | 0.0 | 0.4 | 2.7 | 0.3 | 0.1 | 0.0 | 0.0 |
41.1
|
| NOV | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.1 | 0.0 | 2.1 | 1.2 | 0.7 | 0.5 | 1.0 | 0.8 | 0.0 | 1.2 | 0.0 | 1.5 | 0.0 | 0.0 | 1.5 | 1.3 | 0.2 | 0.9 | 0.3 | 0.0 | 0.0 |
14.6
|
| DEC | 0.0 | 0.0 | 0.2 | 0.1 | 0.0 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 0.1 | 0.5 | 0.0 | 0.0 | 0.4 | 0.4 | 0.1 | 0.5 | 0.0 | 0.1 | 0.3 | 0.0 | 0.0 | 0.0 | 0.2 | 0.4 | 0.1 |
5.3
|
|
|
| |
|
|
| |
Sunshine Hours by Year |
|
| |
| YEAR | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | TOTAL(hrs) |
| 2025 | 20.0 | 28.5 | 100.1 | 149.4 | 133.4 | 78.0 | 99.1 | 77.6 | 48.5 | 10.6 | 0.0 | 0.0 |
745.2
|
| 2024 | 31.6 | 47.1 | 81.4 | 75.6 | 92.3 | 104.8 | 93.2 | 86.4 | 43.8 | 30.5 | 14.6 | 5.3 |
706.6
|
| 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
|
| 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
|
| 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
|
| 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
|
| 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
|
|
|
Outlook for Saturday to Monday: Fine, but turning breezier Saturday, with early sunny spells, before cloud thickens later. Windy Sunday, with rain moving east during the afternoon, occasionally heavy. Sunshine and heavy showers follow Monday.
UK Outlook for Monday 20 Oct 2025 to Wednesday 29 Oct 2025: A rather unsettled pattern is likely through much of this period, as low pressure systems originating over the North Atlantic trundle east or northeastwards across the UK. These will bring showers or longer spells of rain, perhaps accompanied by some strong winds at times, but also interspersed with some drier and brighter interludes, albeit these generally of shorter duration than the recent settled spell. Later in the period, there may be a transition to a slightly cooler and more showery northwesterly regime, as high pressure builds over the Atlantic to the west, and low pressure becomes centred to the east of the UK. Temperatures are likely to be near or slightly above average overall, although may trend slightly below normal later
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.