Having written this completely tongue in cheek I've just checked the 5 day forecast for St. Ives courtesy of the Met Office (and they should know, the own the weather) . Lo and behold ...
Today 19°c rain (don't care about today)
Sunday 18°c 3 a.m. Rain
6 a.m. showers
9 a.m Light cloud (on our way)
Noon Sunny Intervals (arriving about now)
3 p.m. Sunny Intervals (lunch/unpacking)
6 p.m. SUN (Beach)
Monday 21°c SUN !
Tuesday 22°c SUN !!
Wednesday 20°c SUN !!!
I am NOT making it up . Maybe there's something in this praying lark after all !