I was just wondering if the DJI Osmo Mobile 2 could cope with light to medium rain? I don't want to buy it and find I can't use it on certain days because of the weather. Any help is appreciated. I'll be using it with the OnePlus 6 for information.

Hello and good day Cromulent. Thank you for reaching out. The DJI Osmo Mobile 2 is not waterproof. Please do not place the DJI Osmo Mobile 2 in a wet area, and avoid water when using the said unit or storing it. For additional information I will be posting a link where in you can find the overview, the specifications and the frequently asked questions for the DJI Osmo Mobile 2. Thank you.

https://www.dji.com/osmo-mobile-2?site=brandsite&from=nav

I wouldn't suggest getting the gimbal wet beyond a few sprinkles here and there as rust in the joints could develop after exposing it to heavy rain?

I was in heavy rain at the weekend. Kept wiping the OM2, no problems at all.  
Living in the UK it needs to cope with a little rain!