Apple Watch Series 12 weather not syncing with iPhone 16 Pro Max

Hi there

Please try this

Check Location Services on iPhone

• Open Settings on your iPhone 16 Pro Max.
• Go to Privacy & Security, then select Location Services.
• Make sure Location Services is turned on.
• Scroll down and tap Weather, then set access to While Using the App or Always. Also ensure Precise Location is toggled on. 

2. Refresh the Weather App List

• Open the Weather app on your iPhone and make sure your list of cities displays correctly.
• On your Apple Watch Weather app, swipe left on a city (like your current one or an extra default city) and tap the trash can icon to delete it.
• Once deleted, check if your full list of cities from the iPhone populates back onto the watch. 

So if none of that stuff worked, I did a thing that helped. I deleted all the Location service cache, but that alone didn’t help. I did that along with hard resetting both my iPhone and watch. I deleted the watch app and reinstalled and that did the trick!!

Ok, I received my new watch on September 18th, 2026. Instead of setting it up with an old watch, I set it up manually. It would not sync the Apple Weather locations for me. Well, after almost a week- in fact, around 9 p.m. on September 24, 2026 the locations finally synced without me doing anything. So to any of you who may be going through this, be patient. It's not one of my virtues, but it finally did work. y'all have a great day!

Same issue. iPhone 16pro, one week old watch 12.

I’ve tried your mentioned solution, for the past week.

(I did see the watch cities with all the weather data a couple of times, but eventually they all did go blank again)



[Edited by Moderator]

Every single day it’s the same thing. Sync, re-sync, tap reset data, check Bluetooth etc etc etc.

With the watch 9, the weather(and ALL cities) was just there and reliable. Hey Apple, your sync feature has a BUG.

My new watch 12 isn’t playing nice with my iPhone 16pro.

I don't know if the swipe to the left on the older watches worked or not since I never had this problem with those but anyway, it doesn't seem to work on the Series 12. Thank you for the suggestion.

I don’t know about yours but on the night of the 6th day mine finally synced and has not faltered.