What is the current water temperature in St. John's?

Q: What is the current water temperature in St. John's?

As of now, in St. John's, the water temperature is 0.0°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 > St. John's

Water temperature in St. John's

Detailed information about the current water temperature in St. John's. 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.

32.0

°F

March 22, 09:00

Trend:

decreasing

Yesterday:

33.1°F

Tomorrow:

31.9°F

Sunrise:

07:00

Sunset:

19:16

Day Length:

12 h. 16 min.

St. John's in March

Minimum:

33.7°F

Average:

35.4°F

Maximum:

37.6°F

Sea water temperature in St. John's today

As of now, in St. John's, the water temperature is 32.0°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 0.3°F lower 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 slightly 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 33.8°F on 2025, while the historical minimum was 32.0°F on 2016.

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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 31.9°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in St. John's

Date	Current Year actual* / forecast**	last year	10 years average
Mar 8	32.0°F	32.0°F	32.0°F
Mar 9	32.0°F	32.0°F	32.0°F
Mar 10	32.8°F	32.1°F	32.1°F
Mar 11	32.7°F	32.0°F	32.1°F
Mar 12	33.0°F	32.2°F	32.1°F
Mar 13	34.2°F	33.0°F	32.3°F
Mar 14	32.2°F	32.7°F	32.1°F
Mar 15	32.2°F	32.3°F	32.1°F
Mar 16	32.1°F	32.2°F	32.0°F
Mar 17	32.0°F	32.0°F	32.0°F
Mar 18	34.5°F	32.3°F	32.3°F
Mar 19	32.0°F	33.6°F	32.2°F
Mar 20	32.0°F	32.8°F	32.1°F
Mar 21	33.1°F	34.4°F	32.3°F
Mar 22	32.0°F	33.8°F	32.3°F
Mar 23	31.9°F	33.3°F	32.2°F
Mar 24	32.0°F	33.5°F	32.3°F
Mar 25	31.9°F	32.1°F	32.2°F
Mar 26	31.9°F	32.3°F	32.2°F
Mar 27	31.9°F	32.2°F	32.2°F
Mar 28	31.9°F	33.0°F	32.2°F
Mar 29	32.0°F	33.1°F	32.3°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 St. John's by month

In an average year, St. John's offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in St. John's was recorded on August 28, 2022, reaching a 64.9°F. While the coldest temperature occurred on January 11, 2016, dipping to 32.0°F. The average readings by season are 34.8°F in Winter, 33.9°F in Spring, 51.1°F in Summer, and 50.1°F in Autumn.