Offline temperature logger with auto transfer, if wifi available

Hey :slight_smile:

I want to monitor teperature when underway. With no wifi, but the device (ESP? with esphome? Tasmota? anything else?) should log the temperature locally. When home again and wifi connects, it should upload the history to HomeAssistant and go live until wifi disconnects again and start local storage of history.

Is there any solution for this?

Thanks in advance!

EDIT: Maybe this is what I search:

There is no official mechanism for integrations to upload historical data. You can take a look at how OPOWER hacks around this tho.