What is the current water temperature in Belfast?

Q: What is the current water temperature in Belfast?

As of now, in Belfast, the water temperature is 9.86°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 > Belfast

Water temperature in Belfast

Detailed information about the current water temperature in Belfast. 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.

49.7

°F

December 21, 12:29

Trend:

stable

Yesterday:

49.8°F

Tomorrow:

49.8°F

Sunrise:

08:45

Sunset:

16:00

Day Length:

7 h. 15 min.

Belfast in December

Minimum:

43.5°F

Average:

47.0°F

Maximum:

48.9°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 49.7°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 0.2°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

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. 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 51.4°F on 2016, while the historical minimum was 47.2°F on 2020.

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 49.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Belfast

Date	Current Year actual* / forecast**	last year	10 years average
Dec 7	50.7°F	51.7°F	51.3°F
Dec 8	50.6°F	51.6°F	51.2°F
Dec 9	50.2°F	51.5°F	51.1°F
Dec 10	49.8°F	51.5°F	51.0°F
Dec 11	49.7°F	51.5°F	50.7°F
Dec 12	49.8°F	51.5°F	50.6°F
Dec 13	49.7°F	51.4°F	50.3°F
Dec 14	49.8°F	51.4°F	50.4°F
Dec 15	49.8°F	51.2°F	50.3°F
Dec 16	49.8°F	50.7°F	50.2°F
Dec 17	49.9°F	50.5°F	50.1°F
Dec 18	49.9°F	50.4°F	50.1°F
Dec 19	49.8°F	50.2°F	50.0°F
Dec 20	49.8°F	50.1°F	49.8°F
Dec 21	49.7°F	50.0°F	49.6°F
Dec 22	49.8°F	50.2°F	49.6°F
Dec 23	49.6°F	50.2°F	49.4°F
Dec 24	49.5°F	49.9°F	49.3°F
Dec 25	49.3°F	50.1°F	49.1°F
Dec 26	49.4°F	50.0°F	49.2°F
Dec 27	49.4°F	49.9°F	49.2°F
Dec 28	49.4°F	49.8°F	49.2°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 Belfast by month

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

The warmest water in Belfast was recorded on August 14, 2022, reaching a 62.9°F. While the coldest temperature occurred on January 9, 2021, dipping to 42.4°F. The average readings by season are 47.8°F in Winter, 47.6°F in Spring, 56.3°F in Summer, and 55.8°F in Autumn.