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 12.55°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.

54.6

°F

May 12, 03:11

Trend:

stable

Yesterday:

54.6°F

Tomorrow:

54.8°F

Sunrise:

05:27

Sunset:

20:46

Day Length:

15 h. 19 min.

Portland in May

Minimum:

48.6°F

Average:

50.6°F

Maximum:

52.2°F

Sea water temperature in Portland today

As of now, in Portland, the water temperature is 54.6°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 2.1°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 rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 54.1°F on 2022, while the historical minimum was 51.0°F on 2021.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 55.5°F, with minimum temperature starting at 54.8°F, while the maximum might reach 55.9°F.

Daily water temperature in Portland

Date	Current Year actual* / forecast**	last year	10 years average
Apr 28	53.2°F	51.7°F	51.1°F
Apr 29	53.2°F	52.2°F	51.2°F
Apr 30	53.2°F	53.1°F	51.3°F
May 1	53.3°F	53.1°F	51.4°F
May 2	53.0°F	52.8°F	51.4°F
May 3	53.6°F	53.5°F	51.6°F
May 4	53.9°F	53.3°F	51.6°F
May 5	54.1°F	53.2°F	51.9°F
May 6	54.5°F	53.0°F	52.1°F
May 7	54.1°F	52.5°F	52.1°F
May 8	54.4°F	53.0°F	52.4°F
May 9	54.3°F	53.6°F	52.6°F
May 10	55.1°F	53.7°F	52.7°F
May 11	54.6°F	53.5°F	52.5°F
May 12	54.6°F	53.5°F	52.5°F
May 13	54.8°F	53.9°F	52.7°F
May 14	55.2°F	54.5°F	53.1°F
May 15	55.5°F	55.1°F	53.3°F
May 16	55.7°F	55.4°F	53.5°F
May 17	55.8°F	55.3°F	53.7°F
May 18	55.8°F	55.2°F	53.7°F
May 19	55.9°F	55.4°F	53.7°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, 50.4°F in Spring, 61.5°F in Summer, and 60.3°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bristol	55.2°F	62mi
Barry	54.1°F	68mi
Cardiff	54.7°F	71mi
Cherbourg-Octeville	56.2°F	74mi

* current water temperature in this city

** straight line distance from Portland