All data are in degrees Fahrenheit

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Water temperature in Fort William

Detailed information about the current water temperature in Fort William. 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.
Sea temperature in Fort William now

45.8

°F

February 1, 16:53

Trend:

decreasing

Yesterday:

46.0°F

Tomorrow:

45.6°F

Sunrise:

08:20

Sunset:

16:50

Day Length:

8 h. 30 min.

Fort William in February

Minimum:

47.6°F

Average:

48.0°F

Maximum:

48.9°F

Sea water temperature in Fort William today

As of now, in Fort William, the water temperature is 45.8°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 0.3°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 fall a bit.

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 46.3°F on 2017, while the historical minimum was 45.1°F on 2020.

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 45.6°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Fort William

Date Current Year

actual* / forecast**

last year 10 years average
Jan 18 47.1°F 47.4°F 47.1°F
Jan 19 47.1°F 47.4°F 47.1°F
Jan 20 47.0°F 47.4°F 47.1°F
Jan 21 47.0°F 47.4°F 47.1°F
Jan 22 46.7°F 47.3°F 47.0°F
Jan 23 46.9°F 47.2°F 47.0°F
Jan 24 46.9°F 47.2°F 46.9°F
Jan 25 46.4°F 47.1°F 46.8°F
Jan 26 46.3°F 47.1°F 46.9°F
Jan 27 46.3°F 46.8°F 46.7°F
Jan 28 46.5°F 46.7°F 46.5°F
Jan 29 46.4°F 46.5°F 46.2°F
Jan 30 46.1°F 46.3°F 46.0°F
Jan 31 46.0°F 46.1°F 45.7°F
Feb 1 45.8°F 45.9°F 45.6°F
Feb 2 45.6°F 45.7°F 45.4°F
Feb 3 45.6°F 45.6°F 45.4°F
Feb 4 45.6°F 45.6°F 45.3°F
Feb 5 45.6°F 45.5°F 45.3°F
Feb 6 45.5°F 45.6°F 45.2°F
Feb 7 45.5°F 45.6°F 45.2°F
Feb 8 45.5°F 45.8°F 45.2°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 Fort William by month

In an average year, Fort William offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Fort William was recorded on August 19, 2025, reaching a 59.1°F. While the coldest temperature occurred on March 12, 2016, dipping to 43.3°F. The average readings by season are 47.3°F in Winter, 46.6°F in Spring, 54.8°F in Summer, and 54.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Alexandria 45.1°F 60mi
Dumbarton 45.1°F 64mi
Houston 45.1°F 69mi

* current water temperature in this city

** straight line distance from Fort William