My wrist is 8 inches ,will strap be too tight

My series 5 40mm watch came with a sports band that looks like 7 inches is the max. Here is a good place to see what you need.

https://store.apple.com/Catalog/regional/amr/pdf/static/pdf/content/Watch-Sizing-Guide.pdf

You can always buy larger bands: https://www.apple.com/shop/product/MU9L2AM/A/44mm-black-sport-band-m-l-l-xl

160 to 245mm (6.2" to 9.45")

Or third party bands: https://www.imore.com/best-apple-watch-bands-extra-large-wrists

https://www.amazon.com/dp/B06VX29551?ascsubtag=UUimUdUnU51257YYwYg&currency=USD&language=en_US&tag=imoreb-20

According to the PDF in the link from First Magus the large sports band with the 42 mm watch would work.

It shows 160mm to 210 mm (6.3" to 8.25") but it will be just...

The classic buckle band shows 145 to 215 (5.7" to 8.4") so there is a bit more room there.

They show no sizing for the Hermes bands.

Check this site for some optional band choices. https://www.imore.com/best-apple-watch-bands-extra-large-wrists