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 10.91°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.

United States > 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.

51.6

°F

May 19, 23:33

Trend:

increasing

Yesterday:

50.7°F

Tomorrow:

52.2°F

Sunrise:

05:04

Sunset:

20:02

Day Length:

14 h. 58 min.

Belfast in May

Minimum:

37.4°F

Average:

40.4°F

Maximum:

43.3°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 51.6°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 3.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. 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 51.7°F on 2021, while the historical minimum was 46.0°F on 2019.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 53.0°F, with minimum temperature starting at 52.2°F, while the maximum might reach 53.9°F.

Daily water temperature in Belfast

Date	Current Year actual* / forecast**	last year	10 years average
May 5	47.0°F	45.7°F	44.6°F
May 6	46.7°F	48.1°F	45.4°F
May 7	48.3°F	46.9°F	45.7°F
May 8	47.3°F	47.5°F	46.2°F
May 9	46.8°F	48.9°F	46.3°F
May 10	46.7°F	47.6°F	46.4°F
May 11	47.1°F	48.2°F	46.8°F
May 12	47.8°F	49.0°F	47.5°F
May 13	47.9°F	47.2°F	47.6°F
May 14	48.1°F	47.4°F	47.8°F
May 15	48.2°F	47.5°F	48.0°F
May 16	47.8°F	47.7°F	48.0°F
May 17	47.7°F	47.6°F	48.1°F
May 18	50.7°F	46.4°F	48.4°F
May 19	51.6°F	46.7°F	48.3°F
May 20	52.2°F	47.1°F	48.8°F
May 21	52.2°F	46.3°F	48.8°F
May 22	53.0°F	49.8°F	49.7°F
May 23	53.1°F	48.4°F	49.7°F
May 24	53.4°F	50.2°F	50.1°F
May 25	53.5°F	50.1°F	50.2°F
May 26	53.9°F	50.5°F	50.5°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 July 30, 2023, reaching a 71.2°F. While the coldest temperature occurred on March 2, 2015, dipping to 32.0°F. The average readings by season are 39.8°F in Winter, 41.5°F in Spring, 60.2°F in Summer, and 55.5°F in Autumn.