OCEAN · SEA TEMPERATURE · USA · PACIFIC
Sea Temperature — Half Moon Bay
The sea at Half Moon Bay is currently 14°C (57.2°F) — cold, cold enough that most people want a wetsuit; bracing for a quick dip.
SEA TEMPERATURE · HALF MOON BAY
Temperature14°C / 57.2°F
FeelsCold
Waves1.2 m / 3.8 ft · Fun
Live from Open-Meteo Marine (CC-BY) for 37.50°, -122.48°.
READING THE SEA…
Is it warm enough to swim at Half Moon Bay?
At 14°C the water is cold — cold enough that most people want a wetsuit; bracing for a quick dip. Sea temperature lags the seasons, so the warmest water at Half Moon Bayusually comes a month or two after the hottest air, and a cold current or a spell of offshore wind can drop it sharply within a day. This is the surface layer; it's cooler a few metres down.
Half Moon Bay right now
SEE IT ON THE MAP
See Half Moon Bay on the live sea-surface-temperature map.