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 9.4°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.

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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.

48.9

°F

August 6, 08:50

Trend:

stable

Yesterday:

49.0°F

Tomorrow:

48.9°F

Sunrise:

07:37

Sunset:

17:34

Day Length:

9 h. 57 min.

Belfast in August

Minimum:

59.8°F

Average:

63.0°F

Maximum:

65.3°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 48.9°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 0.4°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 49.2°F on 2021, while the historical minimum was 47.5°F on 2017.

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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 49.0°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
Jul 23	47.1°F	48.7°F	49.0°F
Jul 24	47.6°F	48.5°F	49.0°F
Jul 25	49.0°F	48.1°F	49.0°F
Jul 26	48.8°F	48.7°F	48.9°F
Jul 27	48.4°F	48.1°F	48.8°F
Jul 28	47.9°F	48.1°F	48.8°F
Jul 29	48.2°F	49.0°F	48.9°F
Jul 30	48.1°F	48.8°F	48.7°F
Jul 31	49.7°F	49.1°F	48.9°F
Aug 1	49.6°F	49.4°F	48.9°F
Aug 2	49.4°F	49.4°F	48.9°F
Aug 3	49.4°F	49.1°F	48.8°F
Aug 4	49.2°F	49.4°F	48.7°F
Aug 5	49.0°F	48.9°F	48.6°F
Aug 6	48.9°F	48.7°F	48.5°F
Aug 7	48.9°F	49.4°F	48.5°F
Aug 8	49.0°F	49.7°F	48.6°F
Aug 9	49.0°F	49.7°F	48.6°F
Aug 10	49.0°F	49.7°F	48.6°F
Aug 11	49.0°F	49.7°F	48.6°F
Aug 12	49.0°F	49.1°F	48.6°F
Aug 13	48.9°F	48.9°F	48.5°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 January 31, 2018, reaching a 69.7°F. While the coldest temperature occurred on August 14, 2022, dipping to 46.6°F. The average readings by season are 62.9°F in Winter, 59.0°F in Spring, 49.9°F in Summer, and 54.1°F in Autumn.