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 9.58°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.

49.2

°F

April 18, 20:05

Trend:

stable

Yesterday:

49.5°F

Tomorrow:

49.5°F

Sunrise:

06:15

Sunset:

20:32

Day Length:

14 h. 17 min.

Belfast in April

Minimum:

43.4°F

Average:

48.4°F

Maximum:

49.9°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 49.2°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 2.0°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 closely matches the previous two weeks' average, indicating a stable trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 49.7°F on 2020, while the historical minimum was 45.9°F on 2018.

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 50.1°F, with minimum temperature starting at 49.5°F, while the maximum might reach 50.7°F.

Daily water temperature in Belfast

Date	Current Year actual* / forecast**	last year	10 years average
Apr 4	48.3°F	46.5°F	46.4°F
Apr 5	48.4°F	46.5°F	46.5°F
Apr 6	48.9°F	46.5°F	46.7°F
Apr 7	49.2°F	47.1°F	46.8°F
Apr 8	49.2°F	47.2°F	47.0°F
Apr 9	49.2°F	47.2°F	46.9°F
Apr 10	49.6°F	47.3°F	46.9°F
Apr 11	49.4°F	47.3°F	46.9°F
Apr 12	49.8°F	47.2°F	46.9°F
Apr 13	50.1°F	47.2°F	46.9°F
Apr 14	50.0°F	47.5°F	47.0°F
Apr 15	49.8°F	47.6°F	47.1°F
Apr 16	49.6°F	47.8°F	47.2°F
Apr 17	49.5°F	48.2°F	47.4°F
Apr 18	49.2°F	47.9°F	47.3°F
Apr 19	49.5°F	47.9°F	47.5°F
Apr 20	49.6°F	47.8°F	47.7°F
Apr 21	50.0°F	48.0°F	48.0°F
Apr 22	50.3°F	48.0°F	48.3°F
Apr 23	50.4°F	48.4°F	48.5°F
Apr 24	50.5°F	48.4°F	48.5°F
Apr 25	50.7°F	48.4°F	48.7°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, 47.8°F in Spring, 56.4°F in Summer, and 55.7°F in Autumn.