do i need to water early potatoes that are in the poly tunnel?

need to ask a newbie silly question.

i've read that potatoes don't need watering until the later stages.

i have put a couple of small runs in my poly tunnel to try and get a few spuds as early as pos, do i need to water these as the temperature will be high than outside?

thanks all.

I've just put some in today too. I gave them a light watering but won't really bother again until the shoots appear above ground

But it will be drier in the polytunnel than outside, so I would keep the soil a bit damp, as on sunny days, even if its cold outside, you will still get evaporation.