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 18.93°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

66.1

°F

July 5, 02:24

Trend:

stable

Yesterday:

66.2°F

Tomorrow:

66.2°F

Sunrise:

05:05

Sunset:

21:35

Day Length:

16 h. 30 min.

Swansea in July

Minimum:

46.0°F

Average:

47.4°F

Maximum:

49.4°F

Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 66.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 3.7°F higher than 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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 64.4°F on 2018, while the historical minimum was 60.7°F on 2016.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 66.7°F, with minimum temperature starting at 66.2°F, while the maximum might reach 67.0°F.

Daily water temperature in Swansea

Date	Current Year actual* / forecast**	last year	10 years average
Jun 21	61.1°F	63.6°F	61.1°F
Jun 22	62.8°F	62.9°F	61.3°F
Jun 23	64.6°F	63.3°F	61.7°F
Jun 24	66.0°F	63.2°F	61.8°F
Jun 25	66.0°F	62.9°F	62.1°F
Jun 26	66.7°F	62.5°F	62.2°F
Jun 27	66.8°F	62.0°F	62.2°F
Jun 28	66.4°F	64.2°F	62.5°F
Jun 29	66.0°F	63.9°F	62.4°F
Jun 30	65.4°F	64.7°F	62.7°F
Jul 1	65.2°F	64.6°F	62.5°F
Jul 2	64.4°F	64.4°F	62.6°F
Jul 3	65.3°F	64.7°F	62.7°F
Jul 4	66.2°F	64.3°F	62.5°F
Jul 5	66.1°F	64.4°F	62.4°F
Jul 6	66.2°F	64.1°F	62.5°F
Jul 7	66.4°F	64.5°F	62.7°F
Jul 8	66.7°F	65.1°F	63.0°F
Jul 9	66.8°F	64.9°F	63.1°F
Jul 10	67.0°F	65.9°F	63.3°F
Jul 11	66.8°F	65.4°F	63.1°F
Jul 12	67.0°F	66.8°F	63.3°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 47.1°F in Winter, 50.1°F in Spring, 63.2°F in Summer, and 59.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Barry	65.6°F	32mi
Cardiff	65.7°F	34mi
Newport	66.8°F	41mi
Aberystwyth	64.7°F	55mi

* current water temperature in this city

** straight line distance from Swansea