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 10.61°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.

51.1

°F

April 18, 20:14

Trend:

increasing

Yesterday:

50.3°F

Tomorrow:

51.2°F

Sunrise:

06:11

Sunset:

20:09

Day Length:

13 h. 58 min.

Portland in April

Minimum:

50.1°F

Average:

50.9°F

Maximum:

52.4°F

Sea water temperature in Portland today

As of now, in Portland, the water temperature is 51.1°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 1.4°F higher 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 notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 51.8°F on 2024, while the historical minimum was 47.6°F on 2018.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 51.8°F, with minimum temperature starting at 51.2°F, while the maximum might reach 52.1°F.

Daily water temperature in Portland

Date	Current Year actual* / forecast**	last year	10 years average
Apr 4	49.3°F	50.1°F	48.6°F
Apr 5	49.7°F	49.9°F	48.7°F
Apr 6	50.1°F	50.2°F	48.8°F
Apr 7	50.0°F	50.8°F	48.9°F
Apr 8	49.9°F	50.8°F	49.0°F
Apr 9	49.6°F	50.6°F	49.0°F
Apr 10	49.6°F	51.2°F	49.2°F
Apr 11	49.7°F	51.0°F	49.1°F
Apr 12	50.2°F	50.3°F	49.1°F
Apr 13	50.1°F	50.3°F	49.1°F
Apr 14	50.4°F	50.6°F	49.2°F
Apr 15	50.2°F	51.5°F	49.5°F
Apr 16	50.1°F	51.7°F	49.6°F
Apr 17	50.3°F	51.7°F	49.6°F
Apr 18	51.1°F	51.8°F	49.7°F
Apr 19	51.2°F	51.3°F	49.8°F
Apr 20	51.6°F	51.9°F	50.3°F
Apr 21	51.8°F	51.9°F	50.4°F
Apr 22	52.0°F	52.2°F	50.6°F
Apr 23	52.1°F	51.9°F	50.7°F
Apr 24	52.0°F	51.7°F	50.6°F
Apr 25	52.1°F	51.6°F	50.7°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, 50.1°F in Spring, 61.2°F in Summer, and 60.2°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bristol	50.5°F	62mi
Barry	50.4°F	68mi
Cardiff	50.7°F	71mi
Cherbourg-Octeville	50.8°F	74mi

* current water temperature in this city

** straight line distance from Portland