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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

45.2

°F

April 11, 19:36

Trend:

increasing

Yesterday:

44.5°F

Tomorrow:

45.2°F

Sunrise:

06:24

Sunset:

20:20

Day Length:

13 h. 56 min.

Fort William in April

Minimum:

47.5°F

Average:

47.8°F

Maximum:

48.6°F

Sea water temperature in Fort William today

As of now, in Fort William, the water temperature is 45.2°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 0.5°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

The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 47.4°F on 2025, while the historical minimum was 44.3°F on 2018.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 45.3°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
Mar 28 44.9°F 45.3°F 45.0°F
Mar 29 45.0°F 45.4°F 45.1°F
Mar 30 44.9°F 45.4°F 45.0°F
Mar 31 45.1°F 45.4°F 45.1°F
Apr 1 45.2°F 45.5°F 45.1°F
Apr 2 44.7°F 45.9°F 45.1°F
Apr 3 44.7°F 45.8°F 45.1°F
Apr 4 44.2°F 46.7°F 45.1°F
Apr 5 44.1°F 45.8°F 45.0°F
Apr 6 44.4°F 45.8°F 45.1°F
Apr 7 44.1°F 45.8°F 45.1°F
Apr 8 44.3°F 46.5°F 45.3°F
Apr 9 44.3°F 47.1°F 45.4°F
Apr 10 44.5°F 47.4°F 45.5°F
Apr 11 45.2°F 47.4°F 45.7°F
Apr 12 45.2°F 47.4°F 45.8°F
Apr 13 45.3°F 47.4°F 45.8°F
Apr 14 45.3°F 47.3°F 45.8°F
Apr 15 45.3°F 47.2°F 45.8°F
Apr 16 45.4°F 47.1°F 45.9°F
Apr 17 45.3°F 47.0°F 45.9°F
Apr 18 45.5°F 46.9°F 46.0°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

January

February

March

April

May

June

July

August

September

October

November

December

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 46.5°F 60mi
Dumbarton 46.5°F 64mi
Houston 46.4°F 69mi

* current water temperature in this city

** straight line distance from Fort William