Daily sunshine hours observed on 13th April 1985 at 03xxx stations (297 reports).
Date (00Z D to 24Z D)
-1 day
+1 day
Plot hours Plot % of theoretical max
UK only UK & ROI
Highest 10
Kirkwall (26 m, CS)12.5 hours
Banff No 2 (24 m, CS)10.8 hours
Sheffield (131 m, CS)10.2 hours
Northampton, Moulton Park (127 m, CS)9.8 hours
Worthing (2 m, CS)9.8 hours
Keiss (30 m, CS)9.7 hours
Bognor Regis (7 m, CS)9.7 hours
Hemsby (13 m, CS)9.5 hours
Kirton, Horticulture (4 m, CS)9.4 hours
Lowestoft (25 m, CS)9.4 hours

Lowest 10
Hartland (142 m, CS)0.0 hours
Pen-y-ffridd (86 m, CS)0.0 hours
Slaidburn (192 m, CS)0.0 hours
Gogerddan (31 m, CS)0.1 hours
Hazelrigg (95 m, CS)0.1 hours
Malham Tarn (381 m, CS)0.1 hours
Swyddffynnon (178 m, CS)0.3 hours
Helensburgh No 2 (96 m, CS)0.3 hours
Redesdale (235 m, CS)0.4 hours
Bala (163 m, CS)0.6 hours

Average Sun = 5.3 hours

*MIDAS UK data available from 1887
*SYNOP data available from 2000
*Background satellite imagery from 25/02/2000

Data courtesy of MetOffice and OGIMET
OpenMIDAS Data - Met Office (2021): MIDAS Open: UK daily temperature data, v202107. NERC EDS Centre for Environmental Data Analysis, 08 September 2021.


Methods for measuring sunshine have changed over time, older records and some climate sites today will use a Campbell-Stokes sunshine recorder, whereas nowadays the majority of measurements will be taken using a pyrheliometer and threshold of 120 W/m^2 for sunshine. The instrumentation used is indicated by the letters in the table - WMO means a pyrheliometer was used, CS means a Campbell-Stokes recorder was used, and S means that the value was extracted from the SYNOP report (most likely to be a pyrheliometer measurement but not for certain). Clicking on an icon in the map will display a popup which also contains this information.

It is possible to convert the newer pyrheliometer measurements to a Campbell-Stokes equivalent for a fairer comparison across time, which is done for climatological purposes, and is a function which I may add to this page at some point.



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