This is my solution to mount the netatmo wind gauge (anemometer) on top of a pole. With this mount there is no wall or pole that would obstract the wind.

The holder is screwed onto the top of a standard ¾" water pipe, which is quite cheap available in the next hardware store. The wind gauge is fastened onto the holder using the printed screw.

I used PETG for my print, to be more UV resistant than PLA, but it would be best to use something like ASA.