All data are in degrees Fahrenheit

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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

45.8

°F

December 30, 17:11

Trend:

decreasing

Yesterday:

46.9°F

Tomorrow:

45.8°F

Sunrise:

08:22

Sunset:

16:15

Day Length:

7 h. 53 min.

Swansea in January

Minimum:

47.2°F

Average:

48.4°F

Maximum:

51.1°F

Sea water temperature in Swansea today

As of now, in Swansea, the water temperature is 45.8°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.7°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 is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 51.7°F on 2015, while the historical minimum was 47.2°F on 2019.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 45.5°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
Jan 1 45.7°F 49.1°F 48.4°F
Jan 2 45.7°F 49.2°F 48.4°F
Jan 3 45.7°F 49.2°F 48.4°F
Jan 4 45.6°F 49.1°F 48.3°F
Jan 5 45.2°F 48.5°F 47.9°F
Jan 6 45.1°F 48.4°F 47.8°F
Dec 16 48.3°F 46.4°F 48.7°F
Dec 17 48.8°F 46.4°F 48.8°F
Dec 18 48.3°F 46.6°F 48.6°F
Dec 19 48.9°F 46.7°F 48.5°F
Dec 20 48.5°F 47.0°F 48.8°F
Dec 21 48.8°F 47.4°F 48.6°F
Dec 22 48.5°F 48.0°F 48.6°F
Dec 23 48.7°F 48.6°F 48.5°F
Dec 24 48.1°F 48.8°F 48.5°F
Dec 25 48.7°F 48.9°F 48.6°F
Dec 26 47.4°F 48.8°F 48.5°F
Dec 27 47.1°F 48.8°F 48.4°F
Dec 28 46.9°F 49.0°F 48.2°F
Dec 29 46.9°F 49.2°F 48.4°F
Dec 30 45.8°F 49.4°F 48.5°F
Dec 31 45.8°F 49.4°F 48.5°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, 62.7°F in Summer, and 59.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Barry 44.0°F 32mi
Cardiff 43.0°F 34mi
Newport 42.7°F 41mi
Aberystwyth 45.5°F 55mi

* current water temperature in this city

** straight line distance from Swansea