What is the current water temperature in Conwy?

Q: What is the current water temperature in Conwy?

As of now, in Conwy, the water temperature is 12.1°C. 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.

United Kingdom > Conwy

Water temperature in Conwy

Detailed information about the current water temperature in Conwy. 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.

53.8

°F

May 18, 22:11

Trend:

stable

Yesterday:

53.4°F

Tomorrow:

53.6°F

Sunrise:

05:12

Sunset:

21:13

Day Length:

16 h. 1 min.

Conwy in May

Minimum:

43.8°F

Average:

46.5°F

Maximum:

48.6°F

Sea water temperature in Conwy today

As of now, in Conwy, the water temperature is 53.8°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 about the same as 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 fall a bit.

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 57.7°F on 2025, while the historical minimum was 51.0°F on 2018.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 54.3°F, with minimum temperature starting at 53.6°F, while the maximum might reach 54.7°F.

Daily water temperature in Conwy

Date	Current Year actual* / forecast**	last year	10 years average
May 4	52.6°F	53.7°F	50.4°F
May 5	52.7°F	54.0°F	50.8°F
May 6	53.2°F	54.3°F	51.1°F
May 7	52.9°F	53.4°F	51.1°F
May 8	52.9°F	53.5°F	51.4°F
May 9	53.3°F	54.4°F	51.8°F
May 10	52.8°F	54.2°F	51.6°F
May 11	53.4°F	54.3°F	51.7°F
May 12	54.1°F	54.5°F	51.9°F
May 13	53.6°F	56.3°F	52.4°F
May 14	53.6°F	56.8°F	52.7°F
May 15	53.5°F	57.2°F	53.1°F
May 16	53.6°F	57.1°F	53.3°F
May 17	53.4°F	57.0°F	53.4°F
May 18	53.8°F	57.7°F	53.7°F
May 19	53.6°F	57.2°F	53.5°F
May 20	53.9°F	57.6°F	53.8°F
May 21	54.2°F	57.5°F	54.1°F
May 22	54.3°F	57.8°F	54.2°F
May 23	54.6°F	57.7°F	54.5°F
May 24	54.5°F	57.2°F	54.4°F
May 25	54.7°F	57.6°F	54.6°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 Conwy by month

In an average year, Conwy offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Conwy was recorded on August 18, 2025, reaching a 66.8°F. While the coldest temperature occurred on March 9, 2018, dipping to 40.2°F. The average readings by season are 45.8°F in Winter, 48.6°F in Spring, 60.9°F in Summer, and 56.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bangor	53.2°F	13mi
Caernarfon	53.0°F	21mi
Holyhead	51.1°F	33mi
Birkenhead	53.7°F	35mi
Liverpool	53.6°F	36mi

* current water temperature in this city

** straight line distance from Conwy