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 9.96°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.

49.9

°F

August 26, 11:26

Trend:

stable

Yesterday:

49.9°F

Tomorrow:

50.1°F

Sunrise:

07:08

Sunset:

17:56

Day Length:

10 h. 48 min.

Belfast in September

Minimum:

60.2°F

Average:

63.2°F

Maximum:

65.7°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 49.9°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 0.9°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 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 50.0°F on 2021, while the historical minimum was 48.3°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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 50.4°F, with minimum temperature starting at 50.1°F, while the maximum might reach 50.7°F.

Daily water temperature in Belfast

Date	Current Year actual* / forecast**	last year	10 years average
Aug 12	49.0°F	49.1°F	48.6°F
Aug 13	49.5°F	48.9°F	48.6°F
Aug 14	49.4°F	48.6°F	48.5°F
Aug 15	49.2°F	48.7°F	48.5°F
Aug 16	49.6°F	49.0°F	48.5°F
Aug 17	49.8°F	49.3°F	48.6°F
Aug 18	49.6°F	49.1°F	48.5°F
Aug 19	49.6°F	49.0°F	48.6°F
Aug 20	49.6°F	49.0°F	48.7°F
Aug 21	49.5°F	48.9°F	48.7°F
Aug 22	49.5°F	48.7°F	48.8°F
Aug 23	49.8°F	48.5°F	48.9°F
Aug 24	49.6°F	48.5°F	49.0°F
Aug 25	49.9°F	48.3°F	49.0°F
Aug 26	49.9°F	48.5°F	49.0°F
Aug 27	50.1°F	48.8°F	49.1°F
Aug 28	50.4°F	49.6°F	49.4°F
Aug 29	50.5°F	49.4°F	49.6°F
Aug 30	50.5°F	49.7°F	49.6°F
Aug 31	50.4°F	49.6°F	49.4°F
Sep 1	50.5°F	49.3°F	49.6°F
Sep 2	50.7°F	49.4°F	49.8°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.