All data are in degrees Fahrenheit

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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.
Sea temperature in Belfast now

53.0

°F

November 21, 07:22

Trend:

decreasing

Yesterday:

53.1°F

Tomorrow:

52.9°F

Sunrise:

08:06

Sunset:

16:12

Day Length:

8 h. 6 min.

Belfast in November

Minimum:

42.9°F

Average:

47.2°F

Maximum:

49.1°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 53.0°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 0.3°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 54.2°F on 2014, while the historical minimum was 50.4°F on 2018.

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 52.7°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
Nov 7 54.0°F 54.4°F 54.4°F
Nov 8 54.1°F 54.4°F 54.4°F
Nov 9 54.1°F 54.1°F 54.4°F
Nov 10 53.9°F 53.9°F 54.2°F
Nov 11 53.9°F 53.8°F 54.2°F
Nov 12 53.7°F 53.6°F 54.0°F
Nov 13 53.6°F 53.5°F 53.9°F
Nov 14 53.4°F 53.4°F 53.7°F
Nov 15 53.2°F 53.4°F 53.7°F
Nov 16 53.3°F 53.3°F 53.6°F
Nov 17 53.2°F 53.2°F 53.5°F
Nov 18 53.3°F 53.1°F 53.4°F
Nov 19 53.1°F 52.7°F 53.1°F
Nov 20 53.1°F 52.7°F 53.0°F
Nov 21 53.0°F 52.2°F 52.7°F
Nov 22 52.9°F 52.2°F 52.6°F
Nov 23 52.8°F 52.0°F 52.5°F
Nov 24 52.8°F 52.2°F 52.5°F
Nov 25 52.7°F 52.3°F 52.4°F
Nov 26 52.6°F 52.4°F 52.4°F
Nov 27 52.6°F 52.5°F 52.4°F
Nov 28 52.6°F 52.3°F 52.3°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.