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 7.3°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.

45.1

°F

January 5, 05:11

Trend:

decreasing

Yesterday:

45.2°F

Tomorrow:

45.0°F

Sunrise:

08:30

Sunset:

16:14

Day Length:

7 h. 44 min.

Bangor in January

Minimum:

45.5°F

Average:

47.2°F

Maximum:

49.4°F

Sea water temperature in Bangor today

As of now, in Bangor, the water temperature is 45.1°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 2.0°F lower 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 considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 48.8°F on 2016, while the historical minimum was 46.0°F on 2021.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 44.4°F, the minimum temperature may reach 44.0°F, and the maximum might stay at 45.0°F.

Daily water temperature in Bangor

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	45.5°F	46.8°F	47.2°F
Jan 2	45.8°F	47.1°F	47.2°F
Jan 3	45.6°F	47.0°F	47.0°F
Jan 4	45.2°F	46.9°F	47.2°F
Jan 5	45.1°F	47.0°F	47.2°F
Jan 6	45.0°F	46.8°F	47.0°F
Jan 7	44.6°F	46.4°F	46.7°F
Jan 8	44.6°F	46.0°F	46.7°F
Jan 9	44.3°F	45.0°F	46.4°F
Jan 10	44.3°F	45.2°F	46.3°F
Jan 11	44.2°F	45.1°F	46.2°F
Jan 12	44.0°F	44.9°F	46.0°F
Dec 22	48.6°F	47.4°F	47.8°F
Dec 23	48.3°F	47.5°F	47.6°F
Dec 24	47.5°F	46.7°F	47.4°F
Dec 25	47.7°F	47.0°F	47.3°F
Dec 26	46.6°F	46.5°F	47.2°F
Dec 27	45.9°F	46.7°F	47.0°F
Dec 28	45.5°F	46.3°F	46.8°F
Dec 29	45.5°F	46.4°F	46.9°F
Dec 30	45.5°F	46.5°F	46.9°F
Dec 31	45.4°F	46.8°F	47.0°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, 48.3°F in Spring, 59.9°F in Summer, and 57.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	46.7°F	8mi
Conwy	43.8°F	13mi
Holyhead	47.7°F	21mi
Aberystwyth	44.5°F	56mi
Douglas	49.3°F	65mi

* current water temperature in this city

** straight line distance from Bangor