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 19.94°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.

67.9

°F

July 16, 01:52

Trend:

increasing

Yesterday:

67.7°F

Tomorrow:

68.1°F

Sunrise:

05:16

Sunset:

21:27

Day Length:

16 h. 11 min.

Swansea in July

Minimum:

46.0°F

Average:

47.6°F

Maximum:

49.4°F

Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 67.9°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 4.2°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 rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming 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 2018, while the historical minimum was 61.8°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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 68.6°F, with minimum temperature starting at 68.1°F, while the maximum might reach 69.0°F.

Daily water temperature in Swansea

Date	Current Year actual* / forecast**	last year	10 years average
Jul 2	64.4°F	62.2°F	62.4°F
Jul 3	64.7°F	62.1°F	62.3°F
Jul 4	64.3°F	62.0°F	62.4°F
Jul 5	64.4°F	61.9°F	62.3°F
Jul 6	64.1°F	61.8°F	62.4°F
Jul 7	64.5°F	62.2°F	62.5°F
Jul 8	65.1°F	62.7°F	62.8°F
Jul 9	64.9°F	62.4°F	62.9°F
Jul 10	65.9°F	61.3°F	63.1°F
Jul 11	65.4°F	61.7°F	63.0°F
Jul 12	66.8°F	61.9°F	63.1°F
Jul 13	67.4°F	62.0°F	63.6°F
Jul 14	68.5°F	62.5°F	63.9°F
Jul 15	67.7°F	62.4°F	63.5°F
Jul 16	67.9°F	62.4°F	63.6°F
Jul 17	68.1°F	62.6°F	63.8°F
Jul 18	68.3°F	62.5°F	64.1°F
Jul 19	68.8°F	64.1°F	64.6°F
Jul 20	69.0°F	63.4°F	64.7°F
Jul 21	68.8°F	62.9°F	64.6°F
Jul 22	68.8°F	63.8°F	64.5°F
Jul 23	68.8°F	63.6°F	64.6°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, 62.8°F in Summer, and 59.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Barry	67.9°F	32mi
Cardiff	68.9°F	34mi
Newport	69.7°F	41mi
Aberystwyth	66.2°F	55mi

* current water temperature in this city

** straight line distance from Swansea