Depending where on these rain-soaked isles you call home, this weekend may well be your last taste of toasty sunshine until 2013.

And if you’ll be dusting off your sunnies for one final time, remember these essential rules…

01. Indoors or at night?
If you’re not wearing your shades alfresco, you’ve probably got about a 30-second window before everyone thinks you’re a complete tool. So, no.

02. Size matters
Big glasses are proper glam, but strike a balance between your style and what you can pull off.

big-frames-sunglasses-dog
Glam it up with big frames

03. Perv check
Covertly checking the ladies out is one of the great joys of summer. But double-check the opacity of your eyewear beforehand.

04. Round face
North Korean moon-face Kim Jong-il was an expert at matching sunnies with face-shape, donning square frames to angulate his pudgy features.

square-frames-sunglasses-dog
Squarer frames sharpen pudgy features
 
05. Mirrored lenses
It’s proper disconcerting talking to someone in mirrored specs only to see your own mug staring back at you.

06. Match glasses and garms

Match the colour of your frames with your shoes; keep it subtle and you’ll look the money.

07. On top of your head?
A proper opinion divider. If you’re wearing them as some sort of weird, posy UV protecting tiara, then no. If it’s because you don’t own pockets, yes.

08. Upside down?
Don’t ever wear your glasses upside down, you’ll look like snooker player Dennis Taylor.

09. On trend
Retro, as opposed to the techy ’90s styles, are this summer’s main attraction. Tortoiseshell is a winner as are smaller frames.

retro-frames-sunglasses-dog
If in doubt, go retro

10. Save your sunnies
Invest in a good pair of shades and don’t ditch ’em. You’re pretty much guaranteed that the style will come around every 10 years or so, so it’s good to play the long game.