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

54.9

°F

June 27, 12:07

Trend:

increasing

Yesterday:

54.2°F

Tomorrow:

55.1°F

Sunrise:

04:29

Sunset:

22:17

Day Length:

17 h. 48 min.

Fort William in July

Minimum:

47.2°F

Average:

47.5°F

Maximum:

47.9°F

Sea water temperature in Fort William today

As of now, in Fort William, the water temperature is 54.9°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 1.0°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 rise a bit.

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 54.7°F on 2025, while the historical minimum was 53.2°F on 2021.

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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 55.1°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
Jun 13 52.1°F 51.2°F 52.5°F
Jun 14 51.4°F 51.4°F 52.5°F
Jun 15 52.1°F 51.6°F 52.4°F
Jun 16 51.8°F 51.7°F 52.4°F
Jun 17 51.5°F 51.7°F 52.3°F
Jun 18 52.0°F 51.7°F 52.3°F
Jun 19 51.9°F 52.0°F 52.3°F
Jun 20 52.2°F 52.3°F 52.2°F
Jun 21 52.1°F 53.7°F 52.3°F
Jun 22 52.3°F 52.7°F 52.1°F
Jun 23 53.6°F 53.1°F 52.6°F
Jun 24 55.1°F 53.4°F 53.0°F
Jun 25 55.4°F 53.9°F 53.4°F
Jun 26 54.2°F 54.2°F 53.4°F
Jun 27 54.9°F 54.7°F 53.9°F
Jun 28 55.1°F 55.0°F 54.2°F
Jun 29 55.4°F 55.1°F 54.4°F
Jun 30 55.3°F 55.1°F 54.3°F
Jul 1 55.1°F 54.6°F 54.1°F
Jul 2 55.1°F 54.2°F 54.1°F
Jul 3 55.1°F 53.6°F 54.1°F
Jul 4 55.0°F 54.1°F 54.0°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

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 60.3°F 60mi
Dumbarton 60.4°F 64mi
Houston 60.4°F 69mi

* current water temperature in this city

** straight line distance from Fort William