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 16.38°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

61.5

°F

July 14, 01:00

Trend:

increasing

Yesterday:

61.4°F

Tomorrow:

61.6°F

Sunrise:

05:06

Sunset:

21:53

Day Length:

16 h. 47 min.

Belfast in July

Minimum:

42.8°F

Average:

47.8°F

Maximum:

49.0°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 61.5°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 3.9°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 rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 62.0°F on 2025, while the historical minimum was 54.5°F on 2016.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 61.8°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
Jun 30	58.3°F	58.3°F	56.4°F
Jul 1	57.8°F	58.0°F	56.1°F
Jul 2	56.7°F	57.8°F	55.9°F
Jul 3	56.6°F	57.9°F	55.9°F
Jul 4	56.3°F	58.2°F	56.0°F
Jul 5	55.9°F	57.9°F	56.0°F
Jul 6	57.7°F	57.7°F	56.1°F
Jul 7	57.9°F	57.7°F	56.4°F
Jul 8	59.5°F	58.1°F	56.7°F
Jul 9	60.6°F	58.0°F	57.0°F
Jul 10	60.1°F	58.4°F	57.1°F
Jul 11	59.8°F	59.5°F	57.2°F
Jul 12	60.4°F	60.9°F	57.5°F
Jul 13	61.4°F	61.9°F	57.5°F
Jul 14	61.5°F	62.0°F	57.6°F
Jul 15	61.6°F	62.1°F	57.7°F
Jul 16	61.6°F	61.5°F	57.7°F
Jul 17	61.7°F	61.6°F	57.8°F
Jul 18	61.7°F	61.8°F	57.8°F
Jul 19	61.9°F	61.5°F	58.0°F
Jul 20	62.0°F	61.0°F	58.1°F
Jul 21	61.8°F	60.6°F	57.9°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 47.7°F in Winter, 48.2°F in Spring, 57.0°F in Summer, and 55.8°F in Autumn.