What is the current water temperature in Portland?

Q: What is the current water temperature in Portland?

As of now, in Portland, the water temperature is 11.46°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 > Portland

Water temperature in Portland

Detailed information about the current water temperature in Portland. 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.

52.6

°F

December 14, 18:21

Trend:

decreasing

Yesterday:

52.7°F

Tomorrow:

52.4°F

Sunrise:

08:03

Sunset:

16:05

Day Length:

8 h. 2 min.

Portland in December

Minimum:

48.6°F

Average:

49.9°F

Maximum:

51.0°F

Sea water temperature in Portland today

As of now, in Portland, the water temperature is 52.6°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 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 slightly 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 53.4°F on 2015, while the historical minimum was 51.1°F on 2019.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 52.1°F, the minimum temperature may reach 52.0°F, and the maximum might stay at 52.4°F.

Daily water temperature in Portland

Date	Current Year actual* / forecast**	last year	10 years average
Nov 30	53.5°F	54.0°F	54.1°F
Dec 1	53.4°F	54.0°F	54.0°F
Dec 2	53.3°F	54.8°F	53.9°F
Dec 3	53.3°F	54.6°F	53.8°F
Dec 4	53.4°F	54.2°F	53.5°F
Dec 5	52.9°F	54.1°F	53.5°F
Dec 6	52.7°F	54.8°F	53.3°F
Dec 7	52.6°F	54.5°F	53.2°F
Dec 8	52.1°F	54.4°F	53.0°F
Dec 9	52.0°F	54.2°F	52.8°F
Dec 10	52.4°F	53.8°F	52.6°F
Dec 11	52.8°F	53.6°F	52.5°F
Dec 12	52.7°F	53.4°F	52.4°F
Dec 13	52.7°F	53.2°F	52.3°F
Dec 14	52.6°F	53.0°F	52.1°F
Dec 15	52.4°F	52.7°F	51.9°F
Dec 16	52.1°F	51.3°F	51.5°F
Dec 17	52.0°F	52.2°F	51.5°F
Dec 18	52.1°F	51.9°F	51.6°F
Dec 19	52.1°F	52.3°F	51.6°F
Dec 20	52.1°F	52.1°F	51.6°F
Dec 21	52.0°F	51.7°F	51.5°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 Portland by month

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

The warmest water in Portland was recorded on September 3, 2022, reaching a 67.0°F. While the coldest temperature occurred on March 5, 2018, dipping to 43.9°F. The average readings by season are 49.7°F in Winter, 50.1°F in Spring, 61.4°F in Summer, and 60.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bristol	47.7°F	62mi
Barry	49.1°F	68mi
Cardiff	48.7°F	71mi
Cherbourg-Octeville	54.9°F	74mi

* current water temperature in this city

** straight line distance from Portland