All data are in degrees Fahrenheit

en

Water temperature in Cardiff

Detailed information about the current water temperature in Cardiff. 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 Cardiff now

45.7

°F

February 27, 12:29

Trend:

decreasing

Yesterday:

45.9°F

Tomorrow:

45.6°F

Sunrise:

07:03

Sunset:

17:49

Day Length:

10 h. 46 min.

Cardiff in March

Minimum:

44.6°F

Average:

46.4°F

Maximum:

48.6°F

Sea water temperature in Cardiff today

As of now, in Cardiff, the water temperature is 45.7°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 0.9°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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 46.7°F on 2024, while the historical minimum was 41.7°F on 2018.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 44.8°F, the minimum temperature may reach 44.5°F, and the maximum might stay at 45.6°F.

Daily water temperature in Cardiff

Date Current Year

actual* / forecast**

last year 10 years average
Feb 13 44.9°F 43.1°F 44.2°F
Feb 14 45.0°F 43.4°F 44.1°F
Feb 15 44.3°F 43.6°F 44.0°F
Feb 16 45.7°F 41.5°F 44.0°F
Feb 17 45.2°F 41.7°F 43.9°F
Feb 18 45.1°F 42.0°F 43.9°F
Feb 19 44.7°F 40.8°F 44.2°F
Feb 20 44.9°F 41.1°F 44.0°F
Feb 21 44.8°F 41.3°F 44.2°F
Feb 22 44.8°F 41.6°F 44.3°F
Feb 23 46.0°F 43.5°F 44.7°F
Feb 24 45.9°F 43.6°F 44.7°F
Feb 25 46.0°F 44.3°F 44.9°F
Feb 26 45.9°F 44.7°F 44.9°F
Feb 27 45.7°F 44.7°F 44.8°F
Feb 28 45.6°F 44.5°F 44.7°F
Mar 1 44.9°F 44.7°F 44.6°F
Mar 2 44.7°F 44.4°F 44.4°F
Mar 3 44.7°F 44.6°F 44.3°F
Mar 4 44.6°F 45.1°F 44.3°F
Mar 5 44.6°F 44.7°F 44.3°F
Mar 6 44.5°F 45.2°F 44.2°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 Cardiff by month

In an average year, Cardiff offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Cardiff was recorded on August 15, 2022, reaching a 70.0°F. While the coldest temperature occurred on March 4, 2018, dipping to 39.0°F. The average readings by season are 45.6°F in Winter, 50.1°F in Spring, 64.5°F in Summer, and 58.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Barry 45.8°F 7mi
Newport 45.6°F 11mi
Bristol 46.6°F 25mi
Swansea 46.6°F 34mi

* current water temperature in this city

** straight line distance from Cardiff