Water temperature in Harrison Lake

This data the coastal Harrison Lake water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Harrison Lake

Water temperature in Harrison Lake today is 23°C. Based on our historical data over a period of ten years, the warmest water in this day in Harrison Lake was, like today, 23°C, and the coldest was recorded in 2021 at 18°C. Water temperature in Harrison Lake is expected to drop to 17.8°C in the next 10 days. September average water temperature in Harrison Lake is 17.9°C, the minimum temperature is 12°C, and the maximum is 23°C.

The swimming season in Harrison Lake lasts from July to August. During those months, Harrison Lake water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Harrison Lake in winter reaches 4°C, in spring 9.1°C, in summer the average temperature rises to 19.8°C, and in autumn it is 12.7°C.

Harrison Lake water temperature now

Current temperature and weather

Data in a table show Harrison Lake temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Harrison Lake.

0-3 h	3-6 h	6-9 h	9-12 h
18.6°C	18.2°C	18.5°C	23.2°C

12-15 h	15-18 h	18-21 h	21-24 h
29.9°C	30.5°C	27.1°C	22.4°C

Harrison Lake water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Harrison Lake. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Harrison Lake on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Harrison Lake

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Our report for Harrison Lake is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.