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 8.15°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.

46.7

°F

March 12, 06:40

Trend:

stable

Yesterday:

46.7°F

Tomorrow:

46.7°F

Sunrise:

06:31

Sunset:

18:09

Day Length:

11 h. 38 min.

Portland in March

Minimum:

49.8°F

Average:

50.9°F

Maximum:

52.3°F

Sea water temperature in Portland today

As of now, in Portland, the water temperature is 46.7°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 0.4°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 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 48.5°F on 2020, while the historical minimum was 44.4°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 47.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Portland

Date	Current Year actual* / forecast**	last year	10 years average
Feb 26	47.5°F	48.9°F	47.6°F
Feb 27	47.4°F	48.9°F	47.5°F
Feb 28	47.5°F	48.7°F	47.4°F
Mar 1	47.4°F	49.1°F	47.3°F
Mar 2	46.6°F	48.7°F	47.2°F
Mar 3	46.5°F	48.4°F	47.0°F
Mar 4	47.4°F	48.2°F	47.0°F
Mar 5	47.5°F	48.2°F	47.1°F
Mar 6	47.2°F	48.1°F	47.1°F
Mar 7	47.3°F	48.7°F	47.1°F
Mar 8	47.3°F	48.7°F	47.1°F
Mar 9	47.0°F	48.4°F	47.1°F
Mar 10	47.1°F	48.3°F	47.0°F
Mar 11	46.7°F	48.4°F	47.0°F
Mar 12	46.7°F	48.3°F	47.0°F
Mar 13	46.7°F	48.1°F	47.0°F
Mar 14	46.7°F	48.1°F	47.1°F
Mar 15	46.9°F	48.4°F	47.2°F
Mar 16	47.0°F	49.6°F	47.4°F
Mar 17	47.1°F	49.3°F	47.5°F
Mar 18	47.2°F	49.6°F	47.6°F
Mar 19	47.3°F	32.0°F	47.7°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	45.5°F	62mi
Barry	45.6°F	68mi
Cardiff	45.2°F	71mi
Cherbourg-Octeville	48.9°F	74mi

* current water temperature in this city

** straight line distance from Portland