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 9.22°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.

48.6

°F

January 5, 14:25

Trend:

decreasing

Yesterday:

49.0°F

Tomorrow:

48.5°F

Sunrise:

08:10

Sunset:

16:20

Day Length:

8 h. 10 min.

Portland in January

Minimum:

49.4°F

Average:

50.7°F

Maximum:

52.7°F

Sea water temperature in Portland today

As of now, in Portland, the water temperature is 48.6°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 2.2°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 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 52.2°F on 2016, while the historical minimum was 49.3°F on 2021.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 48.0°F, the minimum temperature may reach 47.7°F, and the maximum might stay at 48.5°F.

Daily water temperature in Portland

Date	Current Year actual* / forecast**	last year	10 years average
Jan 1	49.7°F	49.4°F	50.7°F
Jan 2	49.3°F	50.6°F	50.8°F
Jan 3	49.4°F	50.5°F	50.8°F
Jan 4	49.0°F	50.5°F	50.8°F
Jan 5	48.6°F	50.5°F	50.8°F
Jan 6	48.5°F	50.3°F	50.7°F
Jan 7	48.2°F	50.2°F	50.4°F
Jan 8	48.3°F	50.4°F	50.5°F
Jan 9	47.9°F	50.2°F	50.1°F
Jan 10	47.9°F	49.9°F	50.1°F
Jan 11	47.8°F	49.7°F	50.0°F
Jan 12	47.7°F	49.6°F	49.9°F
Dec 22	52.4°F	51.6°F	51.4°F
Dec 23	52.2°F	51.5°F	51.3°F
Dec 24	51.9°F	50.7°F	51.2°F
Dec 25	51.8°F	50.9°F	51.0°F
Dec 26	51.5°F	49.5°F	50.9°F
Dec 27	50.9°F	49.3°F	50.8°F
Dec 28	50.6°F	49.1°F	50.7°F
Dec 29	50.6°F	49.2°F	50.7°F
Dec 30	50.2°F	49.2°F	50.6°F
Dec 31	49.9°F	49.4°F	50.6°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, 50.3°F in Spring, 61.5°F in Summer, and 60.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bristol	41.5°F	62mi
Barry	44.8°F	68mi
Cardiff	43.6°F	71mi
Cherbourg-Octeville	49.1°F	74mi

* current water temperature in this city

** straight line distance from Portland