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Water temperature in Greater Napanee

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This data the coastal Greater Napanee 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 Greater Napanee

Water temperature in Greater Napanee today is 20.9°C. Based on our historical data over a period of ten years, the warmest water in this day in the Lake Ontario near Greater Napanee was recorded in 2018 and was 24°C, and the coldest was recorded in 2017 at 20.4°C. Water temperature in Greater Napanee is expected to drop to 20.8°C in the next 10 days. September average water temperature in Greater Napanee is 20.7°C, the minimum temperature is 17.1°C, and the maximum is 24°C.

The swimming season in Greater Napanee lasts from July to September. During those months, Greater Napanee water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Greater Napanee in winter reaches 2.5°C, in spring 4.7°C, in summer the average temperature rises to 20.2°C, and in autumn it is 15.5°C.

Greater Napanee water temperature now


5 September 2025
today temp
20.9°C
4 September 2025
yesterday temp
20.5°C


Surf Forecast in Greater Napanee 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 Greater Napanee. 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 Greater Napanee. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
1' 0"0' 7"0' 5"0' 3"
0.3 m0.19 m0.12 m0.08 m
12-15 h15-18 h18-21 h21-24 h
1' 1"1' 7"1' 7"2' 0"
0.32 m0.47 m0.48 m0.6 m

Surf report in Greater Napanee

Greater Napanee wave height and direction

Greater Napanee weather forecast

Greater Napanee wind speed and direction

Current temperature and weather

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

0-3 h3-6 h6-9 h9-12 h
13.9°C13.9°C15.3°C16.9°C
12-15 h15-18 h18-21 h21-24 h
18.7°C20.8°C21.6°C21°C

You may also be interested in other sections of our site for Greater Napanee: Sunrise and Sunset, Tides

Greater Napanee water temperature by month

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

MonthAvrMinMax
January1.7°C-0.9°C5.8°Ccold
Water temperature in Greater Napanee in January
February0.4°C-1.1°C1.8°Ccold
Water temperature in Greater Napanee in February
March0.8°C-0.7°C3.6°Ccold
Water temperature in Greater Napanee in March
April3.6°C0°C8.8°Ccold
Water temperature in Greater Napanee in April
May9.6°C2.7°C17.5°Ccold
Water temperature in Greater Napanee in May
June16°C8.5°C22°Ccold
Water temperature in Greater Napanee in June
July21.6°C14.4°C26.1°Cwarm
Water temperature in Greater Napanee in July
August22.9°C18.9°C25.5°Cwarm
Water temperature in Greater Napanee in August
September20.7°C17.1°C24°Cwarm
Water temperature in Greater Napanee in September
October15.6°C10.7°C20.2°Ccold
Water temperature in Greater Napanee in October
November10.2°C6.6°C14.2°Ccold
Water temperature in Greater Napanee in November
December5.5°C0.6°C9.1°Ccold
Water temperature in Greater Napanee in December

Chart monthly average water temperature in Greater Napanee

Water temperature in Greater Napanee

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Greater Napanee 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

WaterWeatherWave
Picton20.4°C22°C0.37 m
Kingston20.4°C22°C0.31 m
Prince Edward20.2°C22°C0.47 m
Sandbanks20.3°C21°C0.45 m
North Beach19.8°C21°C0.45 m
Gananoque20.6°C24°C0.33 m
Brighton19.7°C21°C0.48 m
Henderson Harbor20.7°C23°C0.35 m
Pillar Point20.7°C23°C0.35 m
Sackets Harbor20.7°C23°C0.35 m

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Greater Napanee 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.

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