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 20.83°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

69.5

°F

August 16, 05:11

Trend:

stable

Yesterday:

69.5°F

Tomorrow:

69.5°F

Sunrise:

06:02

Sunset:

20:37

Day Length:

14 h. 35 min.

Swansea in August

Minimum:

45.7°F

Average:

47.3°F

Maximum:

50.0°F

Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 69.5°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. 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 stay about the same.

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 67.8°F on 2022, while the historical minimum was 63.6°F on 2017.

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. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 69.3°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Swansea

Date	Current Year actual* / forecast**	last year	10 years average
Aug 2	68.0°F	67.0°F	65.8°F
Aug 3	68.5°F	66.8°F	65.6°F
Aug 4	68.6°F	66.7°F	65.7°F
Aug 5	69.2°F	66.7°F	65.8°F
Aug 6	68.6°F	66.1°F	65.6°F
Aug 7	67.8°F	66.1°F	65.4°F
Aug 8	68.5°F	65.6°F	65.5°F
Aug 9	68.0°F	65.6°F	65.5°F
Aug 10	68.0°F	65.8°F	65.7°F
Aug 11	68.2°F	65.8°F	65.7°F
Aug 12	69.0°F	66.3°F	65.9°F
Aug 13	69.5°F	67.5°F	66.0°F
Aug 14	69.8°F	67.2°F	66.1°F
Aug 15	69.5°F	67.5°F	65.8°F
Aug 16	69.5°F	67.8°F	65.8°F
Aug 17	69.5°F	68.0°F	65.7°F
Aug 18	69.4°F	67.8°F	65.7°F
Aug 19	69.5°F	67.4°F	65.7°F
Aug 20	69.2°F	67.1°F	65.4°F
Aug 21	69.2°F	67.0°F	65.5°F
Aug 22	69.1°F	66.6°F	65.3°F
Aug 23	69.1°F	66.7°F	65.3°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 August 14, 2026, reaching a 69.8°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, 63.3°F in Summer, and 59.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Barry	70.1°F	32mi
Cardiff	71.6°F	34mi
Newport	71.6°F	41mi
Aberystwyth	67.4°F	55mi

* current water temperature in this city

** straight line distance from Swansea