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 12.65°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.

54.8

°F

October 18, 18:39

Trend:

increasing

Yesterday:

54.5°F

Tomorrow:

55.1°F

Sunrise:

06:34

Sunset:

19:56

Day Length:

13 h. 22 min.

Belfast in October

Minimum:

60.3°F

Average:

63.1°F

Maximum:

66.0°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 54.8°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 1.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight 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 54.6°F on 2021, while the historical minimum was 52.9°F on 2023.

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. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 56.0°F, with minimum temperature starting at 55.1°F, while the maximum might reach 56.9°F.

Daily water temperature in Belfast

Date	Current Year actual* / forecast**	last year	10 years average
Oct 4	51.8°F	52.2°F	52.1°F
Oct 5	52.0°F	52.4°F	52.2°F
Oct 6	51.9°F	53.1°F	52.3°F
Oct 7	52.2°F	53.4°F	52.5°F
Oct 8	51.8°F	54.3°F	52.5°F
Oct 9	52.1°F	53.1°F	52.6°F
Oct 10	52.5°F	52.8°F	52.8°F
Oct 11	52.7°F	53.0°F	53.0°F
Oct 12	53.8°F	53.5°F	53.2°F
Oct 13	53.3°F	54.9°F	53.2°F
Oct 14	53.4°F	54.8°F	53.2°F
Oct 15	53.4°F	53.8°F	53.2°F
Oct 16	53.6°F	53.4°F	53.1°F
Oct 17	54.5°F	53.9°F	53.3°F
Oct 18	54.8°F	54.0°F	53.6°F
Oct 19	55.1°F	54.4°F	53.9°F
Oct 20	55.6°F	55.0°F	54.4°F
Oct 21	55.9°F	56.0°F	54.7°F
Oct 22	56.1°F	57.1°F	55.0°F
Oct 23	56.3°F	57.5°F	55.1°F
Oct 24	56.4°F	58.3°F	55.2°F
Oct 25	56.9°F	58.9°F	55.7°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 January 31, 2018, reaching a 69.7°F. While the coldest temperature occurred on August 12, 2015, dipping to 45.5°F. The average readings by season are 62.8°F in Winter, 59.0°F in Spring, 49.7°F in Summer, and 53.9°F in Autumn.