Ceredigion, United Kingdom
Irish Sea52.14°N, 4.64°WStation UN-CER-TRA

Traeth y Mwnt Sea Water Temperature

A temperate beach on the Irish Sea, warmest around August at about 16.2°C. Today's reading, 7-day forecast, and monthly averages below.

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

Traeth y Mwnt water temperature

16.1
61°FCool / Refreshing (16°C – 20°C)

Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.

+0°vs Sep avgIrish Sea52.14°N, 4.64°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
18°C
63.7°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
16.1°C
61°F
Waves: 1m
Refreshing
ThuOct 1
16.4°C
61.5°F
Waves: 0.9m
Refreshing
FriOct 2
16.5°C
61.7°F
Waves: 0.7m
Refreshing
SatOct 3
16.4°C
61.5°F
Waves: 0.6m
Refreshing
SunOct 4
16.1°C
61°F
Waves: 0.7m
Refreshing
MonOct 5
15.8°C
60.4°F
Waves: 0.9m
Very Cold
TueOct 6
15.7°C
60.3°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Traeth y Mwnt.
Confidence: High

Traeth y Mwnt Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Traeth y Mwnt occurs inJuly, August, September, October — peaking at16.2°C (61.2°F) in August.

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
8
Feb
8
Mar
9
Apr
11
May
14
Jun
15
Jul
16
Aug
Current
16
Sep
15
Oct
13
Nov
10
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January7.3°C9°C10.8°CVery Cold (< 16°C)
February6.8°C8.2°C9.6°CVery Cold (< 16°C)
March6.2°C7.9°C9.6°CVery Cold (< 16°C)
April7.9°C9.3°C10.3°CVery Cold (< 16°C)
May9.7°C11.1°C12.9°CVery Cold (< 16°C)
June11.9°C13.6°C15.5°CVery Cold (< 16°C)
July13.6°C15.2°C16.9°CVery Cold (< 16°C)
August14.8°C16.2°C17.6°CCool / Refreshing (16°C – 20°C)
SeptemberCurrent14.9°C16.1°C17.5°CCool / Refreshing (16°C – 20°C)
October13.6°C14.7°C16.1°CVery Cold (< 16°C)
November10.2°C12.5°C14.4°CVery Cold (< 16°C)
December9.3°C10.4°C12.2°CVery Cold (< 16°C)

Swimming FAQs for Traeth y Mwnt

Is the sea warm enough to swim in Traeth y Mwnt today?

Typical sea surface temperature in Traeth y Mwnt this time of year is 16.1°C (61°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.

What are the warmest months for swimming in Traeth y Mwnt?

The highest water temperatures in Traeth y Mwnt typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Traeth y Mwnt in September?

Historically in September, water temperatures in Traeth y Mwnt average around16.1°C (61.0°F), fluctuating between a recorded minimum of 14.9°C and a maximum of 17.5°C.

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Traeth y Mwnt Coastal Zone Map

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