Private infrared sauna sessions and a float pod set Coast Sauna apart in Greymouth. It is at Unit 3, 70 Cowper Street, and the website describes it as a wellness centre focused on heat therapy and relaxation. Sauna sessions are private. The float pod offers a sensory deprivation session in Epsom salts, and a cold plunge can be added to a visit. Packs include 10 infrared sessions of 40 minutes or of 25 minutes, five 60-minute float sessions, and a three-session starter pack of 45-minute sauna sessions valid for one month, which can be bought only once.
The website says infrared heat warms the body directly rather than the air, and that this feels comfortable at lower temperatures. It says the sauna suits most healthy adults, and asks people who are pregnant or have certain heart or blood pressure conditions to speak to their health provider first. Extra guests are charged $10 each as at 2026. Guests bring two towels or can hire them on arrival. There is one shower, mainly used by float clients, so guests who want it should let staff know in advance.