30 °C at the surface, warm to about 8 m. About 27 °C at typical dive depth.
- 0–10 m Rash guard or 1–2 mm (down to 29.7 °C)
- 10–30 m 3 mm wetsuit (down to 25.6 °C)
- 30–40 m 5 mm wetsuit (down to 24.6 °C)
Model estimate (Copernicus Marine), updated Sat 14 Nov. Medium confidence.