this post was submitted on 31 Oct 2025
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Looking for a good rain gauge (NOT rain sensor) (lemmy.world)
submitted 3 days ago by early_riser@lemmy.world to c/homeassistant@lemmy.world
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A rain sensor just tells you if it's raining or not. A rain gauge will give you cumulative rainfall values. I know there are DIY projects to make HA-compatible gauges but I'd rather have something out of the box, at least in terms of hardware.

I found this on Amazon, and it appears to be be a clone of a more expensive station by Ambient Weather. It looks like it could be made to work with HA as it has a web interface, but I'm not sure if an app is required for setup. The rain gauge also doesn't seem super accurate, which is frustrating as that's the only thing I really care about.

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[–] node815@lemmy.world 1 points 2 days ago

I have the Ecowitt WS90 with a gw2000 hub which has been solid since I installed it Mid July of this year:

Displays Daily Rainfall, Rain Rait Per hours, Week to date Totals, Rain State and the totals so far.

This is from Home Assistant and (Yes it says the rain state is WET It's either that or dry, a very binary state on the sensor) I live in the PNW where it mostly rains this time of year so the totals are pretty accurate. It uses a Rain Piezo which works by converting the mechanical vibrations caused by raindrops hitting its surface into electrical signals. This process allows the sensor to detect rainfall. I've been toying with the idea of getting a manual rain gauge to confirm the totals, but I'm happy with it so far though!