All data are in degrees Fahrenheit


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.
Sea temperature in Swansea now



July 14, 06:05











Day Length:

16 h. 13 min.

Swansea in July







Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 62.1°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 1.5°F lower 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

Today's water temperature slightly varies from the average of the past two weeks. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 67.4°F on 2018, while the historical minimum was 61.4°F on 2015.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 62.8°F, with minimum temperature starting at 62.1°F, while the maximum might reach 63.4°F.

Daily water temperature in Swansea

Date Current Year

actual* / forecast**

last year 10 years average
Jun 30 61.8°F 64.9°F 62.0°F
Jul 1 61.7°F 64.3°F 62.0°F
Jul 2 62.2°F 64.3°F 62.2°F
Jul 3 62.1°F 63.5°F 62.1°F
Jul 4 62.0°F 63.5°F 62.2°F
Jul 5 61.9°F 63.2°F 62.1°F
Jul 6 61.8°F 63.3°F 62.3°F
Jul 7 62.2°F 63.6°F 62.4°F
Jul 8 62.7°F 64.4°F 62.6°F
Jul 9 62.4°F 64.0°F 62.7°F
Jul 10 61.3°F 64.6°F 62.8°F
Jul 11 61.7°F 64.1°F 62.8°F
Jul 12 61.9°F 64.1°F 62.9°F
Jul 13 62.0°F 64.2°F 63.4°F
Jul 14 62.1°F 63.8°F 63.6°F
Jul 15 62.1°F 63.6°F 63.6°F
Jul 16 62.3°F 63.7°F 63.8°F
Jul 17 62.5°F 63.8°F 63.9°F
Jul 18 62.7°F 64.0°F 64.2°F
Jul 19 63.1°F 63.9°F 64.6°F
Jul 20 63.4°F 64.0°F 64.8°F
Jul 21 63.3°F 63.4°F 64.8°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, 2022, reaching a 68.4°F. While the coldest temperature occurred on March 10, 2018, dipping to 42.2°F. The average readings by season are 47.3°F in Winter, 49.7°F in Spring, 62.8°F in Summer, and 59.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Barry 63.1°F 32mi
Cardiff 62.9°F 34mi
Newport 62.3°F 41mi
Aberystwyth 62.0°F 55mi

* current water temperature in this city

** straight line distance from Swansea