What is the current water temperature in Toronto?

Q: What is the current water temperature in Toronto?

As of now, in Toronto, the water temperature is 3.8°C. 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.

Canada > Toronto

Water temperature in Toronto

Detailed information about the current water temperature in Toronto. 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.

38.8

°F

December 9, 03:02

Trend:

decreasing

Yesterday:

39.8°F

Tomorrow:

38.7°F

Sunrise:

07:39

Sunset:

16:41

Day Length:

9 h. 2 min.

Toronto in December

Minimum:

36.4°F

Average:

38.3°F

Maximum:

39.8°F

Water temperature in Toronto today

As of now, in Toronto, the water temperature is 38.8°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 2.7°F lower than the average recorded on this particular day in recent years. The water temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent water temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 43.5°F on 2021, while the historical minimum was 39.6°F on 2019.

latest data

last year

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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 38.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Toronto

Date	Current Year actual* / forecast**	last year	10 years average
Nov 25	42.2°F	47.9°F	43.3°F
Nov 26	42.2°F	47.6°F	43.3°F
Nov 27	42.3°F	47.9°F	43.2°F
Nov 28	42.2°F	47.3°F	43.3°F
Nov 29	42.1°F	46.7°F	42.9°F
Nov 30	41.1°F	46.7°F	42.7°F
Dec 1	41.4°F	46.4°F	42.9°F
Dec 2	40.3°F	44.4°F	42.7°F
Dec 3	40.6°F	44.7°F	42.6°F
Dec 4	39.6°F	44.5°F	42.4°F
Dec 5	39.8°F	44.1°F	42.2°F
Dec 6	39.6°F	43.6°F	42.0°F
Dec 7	39.9°F	43.2°F	41.9°F
Dec 8	39.8°F	42.0°F	41.6°F
Dec 9	38.8°F	41.5°F	41.5°F
Dec 10	38.7°F	41.3°F	41.4°F
Dec 11	38.7°F	41.1°F	41.4°F
Dec 12	38.9°F	40.9°F	41.5°F
Dec 13	38.5°F	41.5°F	41.2°F
Dec 14	38.2°F	41.5°F	40.9°F
Dec 15	38.2°F	41.2°F	40.9°F
Dec 16	38.2°F	41.9°F	40.9°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.

Water temperature in Toronto by month

In an average year, Toronto offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Toronto was recorded on August 13, 2025, reaching a 77.6°F. While the coldest temperature occurred on February 20, 2015, dipping to 32.0°F. The average readings by season are 38.4°F in Winter, 40.2°F in Spring, 64.4°F in Summer, and 57.8°F in Autumn.