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 8.68°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.

47.6

°F

December 26, 06:35

Trend:

decreasing

Yesterday:

47.7°F

Tomorrow:

47.6°F

Sunrise:

08:31

Sunset:

16:03

Day Length:

7 h. 32 min.

Bangor in January

Minimum:

46.1°F

Average:

47.4°F

Maximum:

49.4°F

Sea water temperature in Bangor today

As of now, in Bangor, the water temperature is 47.6°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 stay about the same.

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 49.5°F on 2015, while the historical minimum was 46.1°F on 2019.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 47.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Bangor

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	47.6°F	46.8°F	47.4°F
Jan 2	47.5°F	47.1°F	47.4°F
Dec 12	49.3°F	49.1°F	49.1°F
Dec 13	48.6°F	49.0°F	48.9°F
Dec 14	48.6°F	48.7°F	48.8°F
Dec 15	48.7°F	48.4°F	48.7°F
Dec 16	48.8°F	48.4°F	48.6°F
Dec 17	49.1°F	48.3°F	48.4°F
Dec 18	49.0°F	47.9°F	48.3°F
Dec 19	48.9°F	47.5°F	48.3°F
Dec 20	48.7°F	47.5°F	48.2°F
Dec 21	48.8°F	47.3°F	48.2°F
Dec 22	48.6°F	47.4°F	48.0°F
Dec 23	48.3°F	47.5°F	47.8°F
Dec 24	47.5°F	46.7°F	47.6°F
Dec 25	47.7°F	47.0°F	47.5°F
Dec 26	47.6°F	46.5°F	47.5°F
Dec 27	47.6°F	46.7°F	47.4°F
Dec 28	47.4°F	46.3°F	47.2°F
Dec 29	47.4°F	46.4°F	47.3°F
Dec 30	47.5°F	46.5°F	47.4°F
Dec 31	47.6°F	46.8°F	47.4°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	48.3°F	8mi
Conwy	47.7°F	13mi
Holyhead	50.6°F	21mi
Aberystwyth	48.9°F	56mi
Douglas	51.2°F	65mi

* current water temperature in this city

** straight line distance from Bangor