How often to cut grass in summer?

[Caspianberg]

Ideally I want to cut as little as possible, whilst having a usually lawn for toddler.

half the garden is already left long and wild.

too short and it needs watering more in the heat. It’s 30-35 most days from now until September where I am.

Once every 10 days? More? Less? It’s currently green, with lots of clover/ weeds. Cut at 40mm, probably double height already around a week later

Watering? You don't water a lawn, that's why we use grass as it can take the harsh lack of water and come back when it rains later in the season.

Anyway, we were mowing once a week, it's the weeds that grow back not the grass. But we then bought a robot mower and he keeps on top of it.

Ours generally needs doing at least once a week in summer, sometimes after around 5 days. It depends on if there has been a shower after it was last cut or not.
we don’t water it, around 1/4 of it is left growing long for the insects / cat to play in.

1/2 of it all at the back and on slopes (about 1/4 acre) is left wild and long and not watered. I haven’t actually watered this year, I just know it goes brown quicker if I cut too short, hence I long cut, and maybe it needs cutting more frequently? Or maybe that’s just grass and 10 days+ between cuttings is optimistic

Once a week here, not too short, and if it goes brown it later recovers. I'd never water a lawn.

Fifty years ago the advice was twice a week, but most people did it once a week

Hourly the way ours is growing
Sorry - I would say weekly or fortnightly if you can get away with it

Definitely don't water - just an expensive waste.

I set my mower at about 2" and mow it even once a week. Short enough to play on, long enough to not dry out too quickly.

hmm. It appears I probably should have a go at mowing it this evening then when it’s cooled down.

Dh was saying it was looking a bit long and I was all ‘ yeah it’s fine, I only cut it 10 days ago..’

For a nice lush lawn that's soft underfoot, then you need to give it a quick once-over every 2-3 days and let the clippings fall onto the grass instead of picking them up in a grass box. They mulch the surface of the soil, and help to retain moisture.

40mm is probably about right for a hot climate, and you could probably get away with a cut once a week. I'm guessing you aren't in the UK - do you know what hardiness zone you are in?

@Yamadori - thank you. There’s no hope of me getting time to mow the lawn every other day unfortunately.
According to online Map I’m in hardiness zone 7a/6b borders. Winters basically snowy, summers hot.

I do sometimes leave the back storage box off and leave cuttings on grass. Simply as my compost bins are getting rather full already

Yes, 2-3 days would be in UK climate really. You could probably get away with 10 days at a push, but once a week might be better if you can manage it. Frequent mowing encourages the grass to fill out sideways instead of upwards.