What is the current water temperature in Swansea?

Q: What is the current water temperature in Swansea?

As of now, in Swansea, the water temperature is 12.09°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United Kingdom > Swansea

Water temperature in Swansea

Detailed information about the current water temperature in Swansea. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

53.8

°F

November 20, 18:07

Trend:

decreasing

Yesterday:

54.5°F

Tomorrow:

53.7°F

Sunrise:

07:42

Sunset:

16:20

Day Length:

8 h. 38 min.

Swansea in November

Minimum:

45.5°F

Average:

47.1°F

Maximum:

49.4°F

Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 53.8°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is about the same as the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 55.1°F on 2022, while the historical minimum was 51.8°F on 2019.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 53.0°F, the minimum temperature may reach 52.5°F, and the maximum might stay at 53.7°F.

Daily water temperature in Swansea

Date	Current Year actual* / forecast**	last year	10 years average
Nov 6	55.0°F	56.4°F	56.1°F
Nov 7	55.5°F	56.3°F	56.0°F
Nov 8	55.3°F	56.4°F	55.8°F
Nov 9	55.4°F	56.2°F	55.7°F
Nov 10	55.3°F	55.9°F	55.4°F
Nov 11	54.9°F	55.7°F	55.1°F
Nov 12	54.8°F	55.6°F	55.0°F
Nov 13	54.4°F	55.5°F	55.0°F
Nov 14	54.2°F	55.3°F	54.8°F
Nov 15	54.4°F	55.2°F	54.7°F
Nov 16	55.0°F	55.2°F	54.6°F
Nov 17	54.9°F	55.0°F	54.4°F
Nov 18	54.4°F	54.9°F	54.3°F
Nov 19	54.5°F	54.6°F	54.1°F
Nov 20	53.8°F	54.4°F	53.8°F
Nov 21	53.7°F	54.2°F	53.7°F
Nov 22	53.4°F	54.0°F	53.4°F
Nov 23	53.2°F	53.4°F	53.2°F
Nov 24	53.0°F	53.3°F	53.1°F
Nov 25	52.9°F	53.2°F	52.9°F
Nov 26	52.6°F	52.9°F	52.7°F
Nov 27	52.5°F	52.6°F	52.5°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Swansea by month

In an average year, Swansea offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Swansea was recorded on July 14, 2025, reaching a 68.5°F. While the coldest temperature occurred on March 10, 2018, dipping to 42.2°F. The average readings by season are 47.2°F in Winter, 49.9°F in Spring, 62.9°F in Summer, and 59.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Barry	52.7°F	32mi
Cardiff	52.1°F	34mi
Newport	51.2°F	41mi
Aberystwyth	52.4°F	55mi

* current water temperature in this city

** straight line distance from Swansea