Washington, United States
Coastal Waters47.72°N, 124.42°WStation UN-WAS-RUB

Ruby Beach Sea Water Temperature

A cool beach on the Coastal Waters, warmest around September at about 14°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

Ruby Beach water temperature

14
57.2°FVery Cold (< 16°C)

Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.

+0°vs Sep avgCoastal Waters47.72°N, 124.42°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
16°C
59.9°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
14°C
57.2°F
Waves: 1m
Very Cold
ThuOct 1
14.3°C
57.7°F
Waves: 0.9m
Very Cold
FriOct 2
14.4°C
57.9°F
Waves: 0.7m
Very Cold
SatOct 3
14.3°C
57.7°F
Waves: 0.6m
Very Cold
SunOct 4
14°C
57.2°F
Waves: 0.7m
Very Cold
MonOct 5
13.7°C
56.7°F
Waves: 0.9m
Very Cold
TueOct 6
13.6°C
56.5°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Ruby Beach.
Confidence: High

Ruby Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Ruby Beach occurs inJune, July, August, September — peaking at14°C (57.2°F) in September.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
9
Jan
9
Feb
9
Mar
10
Apr
12
May
13
Jun
14
Jul
13
Aug
Current
14
Sep
13
Oct
11
Nov
10
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January6.9°C8.9°C10.5°CVery Cold (< 16°C)
February7.3°C8.7°C10.7°CVery Cold (< 16°C)
March7.9°C9.2°C11.1°CVery Cold (< 16°C)
April8.2°C10.2°C12.1°CVery Cold (< 16°C)
May10.2°C11.9°C14.6°CVery Cold (< 16°C)
June9.7°C12.9°C15.2°CVery Cold (< 16°C)
July10.7°C13.5°C16.9°CVery Cold (< 16°C)
August10.6°C13.4°C15.4°CVery Cold (< 16°C)
SeptemberCurrent11.1°C14°C16.6°CVery Cold (< 16°C)
October10.2°C12.5°C15.1°CVery Cold (< 16°C)
November9.5°C11.1°C13.6°CVery Cold (< 16°C)
December7.8°C9.8°C13.2°CVery Cold (< 16°C)

Swimming FAQs for Ruby Beach

Is the sea warm enough to swim in Ruby Beach today?

Typical sea surface temperature in Ruby Beach this time of year is 14°C (57.2°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.

What are the warmest months for swimming in Ruby Beach?

The highest water temperatures in Ruby Beach typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Ruby Beach in September?

Historically in September, water temperatures in Ruby Beach average around14°C (57.2°F), fluctuating between a recorded minimum of 11.1°C and a maximum of 16.6°C.

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Ruby Beach Coastal Zone Map

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