I think morning might be less busy and also they are open 24/7.
I would second that. Morning will be less busy.
Go late Saturday stay until early morning Sunday, less runoff is coming in so they will start to get to hot to get in unless u know the right spots, I've gone well over 50 times and cant believe how busy they have gotten and I've lived around locally my whole life, winter time is even busy and a long walk when gates close but still a good time
If you want privacy then go early. When I say early I mean like before 9am. If you dont like crowds then don't even think about going weekends. Sundays too. Sundays are always busy morning and night. Your best bet is early morning on a weekday or before 3pm for sure.
Yes it's open 24 hours. It's a remote locale. I do not know about best times. I've only been there once, it was evening upon our arrival and 1 or 2 am when i left. Lil note: head lamp flashlight is a great thing to have with you. Hope you enjoy it.
I've only went the one time it was pretty busy around 3, it's just a hot spring at the end of a trail so it doesn't close
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