What is the current water temperature in Bangor?

Q: What is the current water temperature in Bangor?

As of now, in Bangor, the water temperature is 11.76°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 > Bangor

Water temperature in Bangor

Detailed information about the current water temperature in Bangor. 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.

53.2

°F

May 13, 16:21

Trend:

stable

Yesterday:

53.5°F

Tomorrow:

53.6°F

Sunrise:

05:21

Sunset:

21:05

Day Length:

15 h. 44 min.

Bangor in May

Minimum:

45.1°F

Average:

47.0°F

Maximum:

48.8°F

Sea water temperature in Bangor today

As of now, in Bangor, the water temperature is 53.2°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 1.6°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

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 54.6°F on 2025, while the historical minimum was 49.0°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 54.1°F, with minimum temperature starting at 53.6°F, while the maximum might reach 54.6°F.

Daily water temperature in Bangor

Date	Current Year actual* / forecast**	last year	10 years average
Apr 29	51.2°F	50.5°F	49.6°F
Apr 30	51.8°F	50.8°F	49.7°F
May 1	52.7°F	51.7°F	50.0°F
May 2	52.1°F	51.8°F	50.0°F
May 3	51.9°F	52.2°F	50.1°F
May 4	52.2°F	52.4°F	50.1°F
May 5	52.1°F	52.7°F	50.5°F
May 6	51.9°F	52.7°F	50.5°F
May 7	52.3°F	52.3°F	50.7°F
May 8	52.5°F	52.0°F	50.7°F
May 9	53.0°F	51.9°F	51.1°F
May 10	52.6°F	51.9°F	51.1°F
May 11	53.0°F	51.9°F	51.1°F
May 12	53.5°F	52.1°F	51.2°F
May 13	53.2°F	54.6°F	51.5°F
May 14	53.6°F	56.1°F	52.0°F
May 15	53.9°F	55.5°F	52.3°F
May 16	54.0°F	55.1°F	52.3°F
May 17	54.2°F	55.0°F	52.5°F
May 18	54.3°F	55.5°F	52.7°F
May 19	54.3°F	55.5°F	52.7°F
May 20	54.6°F	55.8°F	52.9°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 Bangor by month

In an average year, Bangor offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Bangor was recorded on August 27, 2025, reaching a 65.2°F. While the coldest temperature occurred on March 9, 2018, dipping to 41.1°F. The average readings by season are 46.3°F in Winter, 48.4°F in Spring, 59.9°F in Summer, and 57.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	53.4°F	8mi
Conwy	53.6°F	13mi
Holyhead	51.9°F	21mi
Aberystwyth	54.5°F	56mi
Douglas	51.3°F	65mi

* current water temperature in this city

** straight line distance from Bangor