Cass Bay
Canterbury · New Zealand
Rating right now
Cass Bay is a E-facing sand beach on the New Zealand shoreline, opening onto the Tasman Sea — it catches NE–SE swell, and offshore SW–NW winds tidy the banks through october–april.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~11.8°C (53.2°F) on average
Jan
16.7°C
62.1°F · 15.2–19.7°C
Feb
17.1°C
62.8°F · 15.1–19.7°C
Mar
16.5°C
61.7°F · 14.6–18.4°C
Apr
14.8°C
58.6°F · 13.5–16.2°C
May
13°C
55.4°F · 11.6–15.8°C
Jun
10.9°C
51.6°F · 9.3–13.1°C
Jul
9.7°C
49.5°F · 8.5–12°C
Aug
9.4°C
48.9°F · 8.3–10.8°C
Sep
10.4°C
50.7°F · 9.1–11.5°C
Oct
11.8°C
53.2°F · 9.8–14.1°C
Nov
13.9°C
57°F · 12–16.3°C
Dec
15.4°C
59.7°F · 13.8–16.8°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
NE–SE
Best wind
SW–NW
Break type
Beach break
Best season
October–April
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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