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Cape Mendocino water temperature
Cape Mendocino ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 3.0

Overall: 3.3

See all 18 ratings

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Cape Mendocino Water Temperature and Wetsuit Guide

(Humboldt County, USA)

Today's Cape Mendocino sea temperature is 11.8 °C.

Statistics for 21 Jul (1981–2005) – mean: 13.6 °C, range: 12.2 °C to 15.7 °C

Mild or warm air temperatures (wind chill 19 °C) and rather cooler water temperatures (11 °C) at Cape Mendocino today. Surfers will need a quality spring wetsuit and perhaps a neoprene hood, gloves and boots.

United States Sea Water Temperature

Map of current United States
Surface Water Temperatures
based on measurements from oceanographic satellites
United States Water Temperature Anomaly

Map of current United States
Sea Water Temperature Anomalies

(compared with long term averages
at this time of year)

(click thumbnails to expand)

Below is a graph of Historical Sea Surface Temperature for Cape Mendocino. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

Cape Mendocino Water Temperature Graph

All of the graphs for the surf breaks presented on are on the same scale to enable comparison between locations around the world.

Cape Mendocino sea water temperatures peak in the range 12 to 17°C (54 to 63°F) on around the 25th of August and are at their minimum on about the 11th of February, in the range 10 to 13°C (50 to 55°F). The warmest sea water temperatures at Cape Mendocino in late August are ideally suited to a 4/3mm wetsuit + 3mm boots, although a 5/3mm wetsuit may be preferable for longer sessions and cold windy days. At its minimum in the second week of February, low sea water temperatures at Cape Mendocino are suited to a 5/4mm or 5/3mm good quality wetsuit with neoprene gloves and 3mm boots. You will need a hood if it's windy or the air is cold.

Actual sea surface water temperatures close to shore at Cape Mendocino can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Cape Mendocino. Refer to our detailed weather forecasts for this information.