All data are in degrees Fahrenheit

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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

57.4

°F

October 22, 08:43

Trend:

stable

Yesterday:

56.3°F

Tomorrow:

57.2°F

Sunrise:

07:50

Sunset:

18:04

Day Length:

10 h. 14 min.

Cardiff in October

Minimum:

43.7°F

Average:

45.6°F

Maximum:

47.3°F

Sea water temperature in Cardiff today

As of now, in Cardiff, the water temperature is 57.4°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 about the same as the average recorded on this particular day in recent years. Since yesterday, there was a noticeable 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 reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. 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 59.1°F on 2021, while the historical minimum was 55.5°F on 2020.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 56.7°F, the minimum temperature may reach 56.3°F, and the maximum might stay at 57.2°F.

Daily water temperature in Cardiff

Date Current Year

actual* / forecast**

last year 10 years average
Oct 8 58.5°F 62.0°F 60.0°F
Oct 9 58.2°F 61.5°F 59.6°F
Oct 10 58.3°F 61.3°F 59.4°F
Oct 11 57.7°F 60.9°F 59.2°F
Oct 12 57.4°F 60.6°F 59.0°F
Oct 13 57.6°F 60.3°F 58.8°F
Oct 14 57.5°F 60.9°F 58.8°F
Oct 15 57.3°F 60.8°F 58.7°F
Oct 16 57.2°F 60.4°F 58.4°F
Oct 17 56.6°F 60.0°F 58.2°F
Oct 18 57.1°F 59.5°F 58.1°F
Oct 19 56.7°F 59.2°F 57.7°F
Oct 20 56.4°F 59.0°F 57.7°F
Oct 21 56.3°F 58.6°F 57.5°F
Oct 22 57.4°F 58.4°F 57.5°F
Oct 23 57.2°F 58.2°F 57.3°F
Oct 24 57.0°F 58.2°F 57.1°F
Oct 25 56.8°F 57.5°F 56.9°F
Oct 26 56.6°F 57.7°F 56.7°F
Oct 27 56.7°F 57.6°F 56.8°F
Oct 28 56.6°F 57.2°F 56.7°F
Oct 29 56.3°F 57.1°F 56.4°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 45.8°F in Winter, 49.9°F in Spring, 64.1°F in Summer, and 58.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Barry 58.0°F 7mi
Newport 55.9°F 11mi
Bristol 55.4°F 25mi
Swansea 57.6°F 34mi

* current water temperature in this city

** straight line distance from Cardiff