Water temperature in Penetanguishene

This data the coastal Penetanguishene 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 Penetanguishene

Water temperature in Penetanguishene today is 20°C. Based on our historical data over a period of ten years, the warmest water in this day in the Georgian Bay near Penetanguishene was recorded in 2018 and was 22.8°C, and the coldest was recorded in 2017 at 19.3°C. Water temperature in Penetanguishene is expected to drop to 19.8°C in the next 10 days. September average water temperature in Penetanguishene is 19.8°C, the minimum temperature is 16.1°C, and the maximum is 23.4°C.

The swimming season in Penetanguishene lasts from July to September. During those months, Penetanguishene water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Penetanguishene in winter reaches 1.9°C, in spring 4.4°C, in summer the average temperature rises to 20.8°C, and in autumn it is 14.4°C.

Penetanguishene water temperature now

Surf Forecast in Penetanguishene for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Penetanguishene. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Penetanguishene. Data in table shown for 5 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Penetanguishene

Penetanguishene weather forecast

Current temperature and weather

Data in a table show Penetanguishene temperature today (5 September 2025). For more information and forecast for a few days, go to the weather forecast Penetanguishene.

0-3 h	3-6 h	6-9 h	9-12 h
14.6°C	14.1°C	14°C	15.3°C

12-15 h	15-18 h	18-21 h	21-24 h
17.6°C	19°C	17.8°C	16.5°C

Penetanguishene water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Penetanguishene. 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 Penetanguishene 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 Penetanguishene

The nearest beaches and cities from Penetanguishene with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Port Severn	20.1°C	19°C		0.54 m
Thunder Beach	19.7°C	19°C		0.61 m
Balm Beach	19.3°C	20°C		0.46 m
Allenwood Beach	19.6°C	20°C		0.37 m
Woodland Beach	19.6°C	20°C		0.37 m
Wasaga Beach	19.6°C	20°C		0.37 m
Craigleith	19.7°C	20°C		0.48 m
Collingwood	19.7°C	20°C		0.23 m
Lake Couchiching	20.7°C	20°C		0.37 m
Meaford	19.8°C	18°C		0.44 m

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Our report for Penetanguishene 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.