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 20.11°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.

68.2

°F

August 2, 05:21

Trend:

stable

Yesterday:

68.0°F

Tomorrow:

67.9°F

Sunrise:

05:40

Sunset:

21:03

Day Length:

15 h. 23 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 68.2°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 2.7°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 67.0°F on 2025, while the historical minimum was 63.9°F on 2020.

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 68.0°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
Jul 19	68.8°F	66.0°F	65.3°F
Jul 20	68.6°F	65.7°F	65.3°F
Jul 21	68.9°F	67.3°F	65.3°F
Jul 22	68.8°F	66.9°F	65.2°F
Jul 23	67.6°F	66.5°F	65.2°F
Jul 24	68.4°F	66.1°F	65.0°F
Jul 25	68.7°F	66.8°F	65.4°F
Jul 26	69.2°F	66.3°F	65.6°F
Jul 27	68.4°F	66.3°F	65.6°F
Jul 28	68.4°F	66.1°F	65.4°F
Jul 29	67.9°F	66.5°F	65.4°F
Jul 30	68.0°F	66.7°F	65.4°F
Jul 31	68.2°F	67.4°F	65.6°F
Aug 1	68.0°F	66.9°F	65.4°F
Aug 2	68.2°F	67.0°F	65.5°F
Aug 3	67.9°F	66.8°F	65.3°F
Aug 4	68.1°F	66.7°F	65.4°F
Aug 5	68.1°F	66.7°F	65.4°F
Aug 6	67.9°F	66.1°F	65.3°F
Aug 7	67.9°F	66.1°F	65.2°F
Aug 8	67.9°F	65.6°F	65.2°F
Aug 9	67.9°F	65.6°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 July 26, 2026, reaching a 69.2°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	69.6°F	32mi
Cardiff	70.0°F	34mi
Newport	70.3°F	41mi
Aberystwyth	67.3°F	55mi

* current water temperature in this city

** straight line distance from Swansea