Mauna Kea Beach
Hawaii · United States
Rating right now
Mauna Kea Beach is a W-facing sand beach on the United States shoreline, opening onto the Coastal Waters — it catches SW–NW swell, and offshore NE–SE winds tidy the banks through year-round.
Today's surf at Mauna Kea Beach
Updated 17:02 spot time
Mauna Kea Beach surf report for Wednesday 30 Sept: waves 1.5 ft–2 ft waist to chest high, 1.5 ft W swell at 7.7 s. Wind up to 11 mph W. Water 83°F. Best surf window around 11:00 AM — fun (3/5) with 11 mph W wind.
Snapshot refreshed hourly — the live hourly forecast below updates in real time.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~26.9°C (80.4°F) on average
Jan
24.9°C
76.8°F · 23.5–25.8°C
Feb
24.6°C
76.3°F · 23.7–25.6°C
Mar
24.5°C
76.1°F · 23.1–25.5°C
Apr
24.8°C
76.6°F · 23.6–26°C
May
25.4°C
77.7°F · 24.6–27°C
Jun
25.7°C
78.3°F · 24.6–26.7°C
Jul
26.2°C
79.2°F · 24.8–27.2°C
Aug
26.6°C
79.9°F · 25.5–27.9°C
Sep
27°C
80.6°F · 25.7–29.2°C
Oct
26.9°C
80.4°F · 25.9–28.1°C
Nov
26.4°C
79.5°F · 24.9–27.7°C
Dec
25.5°C
77.9°F · 24.1–26.6°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
SW–NW
Best wind
NE–SE
Break type
Beach break
Best season
Year-round
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. Sharks are part of the ecosystem here — avoid dawn, dusk and murky rivermouth water.
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