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 9.71°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.

49.5

°F

December 5, 17:34

Trend:

stable

Yesterday:

49.3°F

Tomorrow:

49.2°F

Sunrise:

08:13

Sunset:

16:00

Day Length:

7 h. 47 min.

Bangor in December

Minimum:

44.9°F

Average:

46.0°F

Maximum:

47.8°F

Sea water temperature in Bangor today

As of now, in Bangor, the water temperature is 49.5°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 about the same as 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 considerably lower than the average registered over the last two weeks, indicating a slight cooling 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 50.5°F on 2024, while the historical minimum was 48.6°F on 2018.

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 shows a gradual cooling trend. The average temperature is expected to be 49.0°F, the minimum temperature may reach 48.9°F, and the maximum might stay at 49.2°F.

Daily water temperature in Bangor

Date	Current Year actual* / forecast**	last year	10 years average
Nov 21	52.4°F	52.3°F	52.3°F
Nov 22	52.3°F	52.1°F	52.2°F
Nov 23	51.5°F	51.6°F	51.7°F
Nov 24	51.4°F	51.5°F	51.6°F
Nov 25	51.2°F	51.6°F	51.3°F
Nov 26	50.3°F	51.2°F	51.0°F
Nov 27	50.2°F	51.0°F	50.9°F
Nov 28	50.3°F	50.8°F	50.7°F
Nov 29	50.2°F	50.7°F	50.4°F
Nov 30	50.0°F	50.8°F	50.2°F
Dec 1	50.0°F	51.3°F	50.1°F
Dec 2	49.8°F	51.0°F	49.9°F
Dec 3	49.7°F	50.8°F	49.9°F
Dec 4	49.3°F	50.5°F	49.6°F
Dec 5	49.5°F	50.5°F	49.6°F
Dec 6	49.2°F	50.1°F	49.3°F
Dec 7	49.1°F	49.8°F	49.2°F
Dec 8	49.1°F	50.0°F	49.2°F
Dec 9	49.0°F	49.7°F	49.2°F
Dec 10	49.0°F	49.3°F	49.2°F
Dec 11	48.9°F	49.1°F	49.1°F
Dec 12	48.9°F	49.1°F	49.1°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, 48.1°F in Spring, 59.6°F in Summer, and 57.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	49.5°F	8mi
Conwy	48.8°F	13mi
Holyhead	51.5°F	21mi
Aberystwyth	49.0°F	56mi
Douglas	52.2°F	65mi

* current water temperature in this city

** straight line distance from Bangor