The best bet is probably the Sensative light and temperature strip. Excellent outdoor rating.
I know there are a lot of people using their contact sensor, I don’t recall anyone using this model who’s reported in the forums yet.
how sensitive does it need to be? The Phillips hue outdoor motion sensor has a built-in light sensor which works fine for telling the difference between daytime and nighttime and has an excellent weatherproof rating. There are definitely people using that one.
https://www.amazon.co.uk/Philips-Outdoor-Motion-Sensor-Compatible/dp/B07KMP8P1Q
You don’t need the hue bridge to use it with SmartThings, but you will need a custom DTH:
But of course that’s zigbee, not Z wave.
For one more option, Climax Technologies do make a zwave one on the EU frequency, but I’ve never seen it for sale to individuals. You could contact them and ask.
http://www.climax.com.tw/new/lm-1zw.php
But I would think the sensative would be the strongest candidate.