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 9.08°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.

48.3

°F

January 13, 18:33

Trend:

stable

Yesterday:

47.8°F

Tomorrow:

48.2°F

Sunrise:

08:07

Sunset:

16:31

Day Length:

8 h. 24 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 48.3°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 1.5°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 50.8°F on 2016, while the historical minimum was 48.6°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 47.9°F, the minimum temperature may reach 47.7°F, and the maximum might stay at 48.2°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	50.6°F
Jan 6	48.4°F	50.3°F	50.5°F
Jan 7	48.4°F	50.2°F	50.2°F
Jan 8	47.9°F	50.4°F	50.2°F
Jan 9	48.0°F	50.2°F	49.9°F
Jan 10	47.9°F	49.9°F	49.9°F
Jan 11	47.8°F	49.7°F	49.8°F
Jan 12	47.8°F	49.6°F	49.7°F
Jan 13	48.3°F	49.4°F	49.8°F
Jan 14	48.2°F	49.3°F	49.7°F
Jan 15	48.0°F	49.0°F	49.5°F
Jan 16	47.9°F	49.9°F	49.4°F
Jan 17	47.9°F	49.5°F	49.3°F
Jan 18	47.8°F	49.3°F	49.2°F
Jan 19	47.7°F	49.2°F	49.2°F
Jan 20	47.7°F	49.0°F	49.1°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	42.1°F	62mi
Barry	43.2°F	68mi
Cardiff	42.8°F	71mi
Cherbourg-Octeville	49.3°F	74mi

* current water temperature in this city

** straight line distance from Portland