On 28 Aug, 21:28, "Nick Gardner"
wrote:
For those interested in these things, I have just been looking back through
my recent weather recordings for last Saturday (25th Aug 2007) and I've just
noticed what the effects of the arrival of an unusually 'late-in-the-day'
sea breeze had on temperature, and of course, wind direction. The sea breeze
here is normally very persistent on warm, sunny days blowing almost
continuously from a SSE direction at between 8-10 mph. This one was a little
feeble but it still managed to drop the temperature quite quickly, though
obviously aided by the lowering of the sun in the sky.

16:00 28.6C 1.4 mph NW
16:15 28.9C 1.0 mph NW
16:30 29.1C 1.3 mph WNW
16:45 29.1C 1.8 mph NW
17:00 29.1C 1.3 mph WSW
17:15 29.3C 0.9 mph WSW
17:30 29.4C 0.6 mph WNW
17:45 28.9C 10.9 mph S
18:00 24.1C 6.7 mph SSE
18:15 22.5C 4.6 mph SSE
18:30 21.9C 2.9 mph SSE
18:45 21.5C 2.5 mph SSE
19:00 21.2C 2.9 mph SSE
19:15 21.0C 2.3 mph SSE
________________
Nick G
Otter Valley, Devon
83 m amslhttp://www.ottervalley.co.uk

Interesting stuff.

In Penzance the sea breeze often sets in around noon, but except right
on the sea front it's very weak & normally has little affect on
temperature a mile inland.

Around 16:00 a N sea breeze arrives via the Hayle estuary & the flat
area behind the heliport. This can lower the temperature 3 degrees or
so quite easily. During fine weather the max is usually around 14:00
between these events.

This can cause some surprise to the people sheltering behind wind
shields at Marazion, which is particularly affected, when the wind
suddenly switches direction and picks up to a force 3-4.

I assume that the timing is due to the strong heating SE facing
Mount's Bay in the morning, and the generally NW facing 'North' coast
in the afternoon.

www.xcweather.co.uk/ often shows up this change.

Interesting things sea breezes, they are much more complex than many
realise.

Graham
Penzance