Waxing Crescent Moon Weather Lore

Seen in the west just after sunset, a waxing crescent moon is also called a new moon.  The feature photo is courtesy of NASA and the International Space Station.

We’ve always heard that if the crescent moon’s points point upward, like a smiley face in the night sky, and able to contain water, it predicts a dry spell.  But if the new moon stands on its points, expect rain to spill out.  Obviously right now we have a smiling crescent moon, so let’s go check the weather forecast…

Last night's waxing crescent moon smiling at us

Last night’s waxing crescent moon smiling at us

Sometimes you can see the rest of the moon faintly illuminated, as in this photo — that’s due to light reflected from earth’s day side and is called earthshine.

But is the forecast for a dry spell accurate?  Looking good so far — maybe we should use the moon for our passage forecasts, can’t be much less accurate than anything more sophisticated we use!   🙂

Screen Shot 2013-12-07 at 3.33.52 PM

Anyone else have moon lore useful for cruisers?  Leave a comment and share!  Cheers!  Jan


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