Windy at night?

[PlaneSailin]

Ok weather nerds, please answer this: if you look at WindGuru for the next week, almost every day it predicts the wind will be strongest around the middle of the night, and the weakest around the middle of the day.
Why?

This often seems to be the case during the NE. Again, why?

[38 mph]

Same thing here
http://www.buoyweather.com/wxnav6.jsp?region=malaysia&program=nww3BW1&grb=nww3&latitude=4.0&longitude=104.0&zone=8&units=e

Christ !
April 7th and still NE.
As they say round here ( turnip country) "I think the answer lies in the soil"

[Denis Wee]

We had good NE conditions today at PA. Those who were lucky to be down there enjoyed themselves.
How about tomorrow . . ? Well . . maybe 

[38 mph]

Is this the last gasp ? !

http://www.buoyweather.com/wxnav6.jsp?region=malaysia&program=nww3BW1&grb=nww3&latitude=4.0&longitude=104.0&zone=8&units=e

OLd (but light) Malaysian sailor Larry Chan was visiting Kuantan this week and had 2 days (well, some hours anyway) of planing
on a borrowed 6.5 sail.............