Ok here’s a tip..
Look up. Find a point of interest and locate that. Then navigate around that focal point where ever you are in the city. As you develop the Skilz, locate a couple of them and navigate around them. Use them as reference points like you would on a trail. (tower 51 in Broadgate, Gerkin, BT Tower, Tower Bridge, Aldgate, 7 Dials, etc. etc. the porn shop on the corner near Tokyo Fixed etc. etc. )
If you constantly look down at the road you’ll get lost, you’ve no reference points see.
HTH.
And yes, that’s the weather for you sometimes it rains.. But I bet you got a bike ok though yeah?? 😆