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

56.1

°F

July 15, 12:48

Trend:

stable

Yesterday:

56.0°F

Tomorrow:

56.0°F

Sunrise:

04:49

Sunset:

22:03

Day Length:

17 h. 14 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 56.1°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 0.6°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 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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 57.1°F on 2025, while the historical minimum was 53.7°F on 2024.

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 56.1°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
Jul 1 54.8°F 54.6°F 54.2°F
Jul 2 53.9°F 54.2°F 54.1°F
Jul 3 54.0°F 53.6°F 54.1°F
Jul 4 53.3°F 54.1°F 53.9°F
Jul 5 53.0°F 54.1°F 53.9°F
Jul 6 53.9°F 54.1°F 54.0°F
Jul 7 54.0°F 54.3°F 54.3°F
Jul 8 54.3°F 54.8°F 54.6°F
Jul 9 54.6°F 54.1°F 54.6°F
Jul 10 54.6°F 54.1°F 54.8°F
Jul 11 55.1°F 55.0°F 55.1°F
Jul 12 55.3°F 55.7°F 55.3°F
Jul 13 55.6°F 56.1°F 55.5°F
Jul 14 56.0°F 57.4°F 55.7°F
Jul 15 56.1°F 57.1°F 55.5°F
Jul 16 56.0°F 56.2°F 55.4°F
Jul 17 56.0°F 56.4°F 55.4°F
Jul 18 56.0°F 56.4°F 55.4°F
Jul 19 56.1°F 56.3°F 55.5°F
Jul 20 56.2°F 56.2°F 55.6°F
Jul 21 56.2°F 56.3°F 55.7°F
Jul 22 56.5°F 56.7°F 55.9°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 59.6°F 60mi
Dumbarton 59.6°F 64mi
Houston 59.6°F 69mi

* current water temperature in this city

** straight line distance from Fort William