Is a black suit acceptable for a formal summer wedding?

[Fairylightsarego]

I am clueless about this kind of thing so looking for advice of what the “done thing is” please.

I am going to be a bridesmaid in August for my dear friend. It’s going to be what I would think of as a very fancy wedding. Costing around £30k in a posh wedding venue.

I’ve never been to a wedding except my own that was very, very low key.

My partner is not the dressing up type at all, lives in jeans and t-shirts.

He only has one black suit and is making a fuss about buying a new one as it would never be worn again. I was thinking a black suit wouldn’t be ideal for a summer wedding and grey or navy might be better. He thinks this is ridiculous, is a black suit acceptable?

I realise this is partly me worrying about not fitting in as an event this flash is very new to me.

Thank you

Has he not considered:

https://www.mossbroshire.co.uk/clothing

https://rathbonestailor.com/collections/wedding

https://www.impeccablewear.co.uk/

Thank you. I did mention renting but when he saw the prices he said that was as much as his only suit. (Which is correct as it’s not the best quality)

My DH wears a black suit for funerals only. And a black suit with a white shirt is funeral attire for me. A colourful tie might make it more weddingy I suppose. But for a summer wedding I would go for navy, grey or like a lighter linen in a cream / neutral colour.

It’s fine, he can wear a lighter coloured shirt and tie, and most men will take their jackets off after the formal parts are over anyway

Thank you. I did wonder whether a colourful shirt might make a difference rather than white. But can’t picture how that would look really.
I know he’s going to feel and look really uncomfortable whatever, formal wear is just not him.

But it’s sounds like I was right and black suit is not appropriate

For a man I think it's fine. Morning coats at weddings are generally black.

I think it’s totally fine. Nice colourful shirt and stylish tie. This is DHs wedding go-to when not required to wear morning suit.

It's fine.
Yes, lots do wear lighter coloured suits nowadays, but if he has a black suit that fits him and is a person who never wears suits other than weddings, funerals and interviews, then he is right, there is no need to buy a new one.
Just get a nice, bright tie and the job's a good un.
Life is SO much simpler for men

It’s absolutely fine. We had a summer wedding and loads of the men wore black suits, they mostly wore colourful shirts or ties to brighten them

Mumsnet would be horrified that my bridesmaids also wore black dresses