All data are in degrees Fahrenheit

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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.
Sea temperature in Belfast now

55.3

°F

June 23, 20:37

Trend:

decreasing

Yesterday:

56.6°F

Tomorrow:

54.9°F

Sunrise:

05:21

Sunset:

21:07

Day Length:

15 h. 46 min.

Belfast in June

Minimum:

32.0°F

Average:

32.4°F

Maximum:

33.9°F

Sea water temperature in Belfast today

As of now, in Belfast, the water temperature is 55.3°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 0.5°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 fall 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 59.4°F on 2021, while the historical minimum was 33.7°F on 2016.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 56.7°F, with minimum temperature starting at 54.9°F, while the maximum might reach 58.0°F.

Daily water temperature in Belfast

Date Current Year

actual* / forecast**

last year 10 years average
Jun 9 50.1°F 54.8°F 50.0°F
Jun 10 52.4°F 50.6°F 49.9°F
Jun 11 49.7°F 51.4°F 49.9°F
Jun 12 50.1°F 51.7°F 50.1°F
Jun 13 50.6°F 53.7°F 50.4°F
Jun 14 49.1°F 52.0°F 50.8°F
Jun 15 51.9°F 52.1°F 51.1°F
Jun 16 51.3°F 51.9°F 50.4°F
Jun 17 52.8°F 52.7°F 51.1°F
Jun 18 53.8°F 54.7°F 52.4°F
Jun 19 55.2°F 55.9°F 53.6°F
Jun 20 55.9°F 56.3°F 53.4°F
Jun 21 56.7°F 55.7°F 53.9°F
Jun 22 56.6°F 60.2°F 54.5°F
Jun 23 55.3°F 57.6°F 54.9°F
Jun 24 54.9°F 55.9°F 54.4°F
Jun 25 55.5°F 54.6°F 55.0°F
Jun 26 56.4°F 55.0°F 55.9°F
Jun 27 56.9°F 56.4°F 56.4°F
Jun 28 57.3°F 55.9°F 56.9°F
Jun 29 57.7°F 55.6°F 57.3°F
Jun 30 58.0°F 55.6°F 57.5°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 August 12, 2020, reaching a 73.6°F. While the coldest temperature occurred on January 1, 2018, dipping to 32.0°F. The average readings by season are 33.1°F in Winter, 36.8°F in Spring, 61.5°F in Summer, and 55.1°F in Autumn.