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 2.68°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.

36.8

°F

May 19, 13:03

Trend:

increasing

Yesterday:

36.3°F

Tomorrow:

37.1°F

Sunrise:

05:19

Sunset:

20:36

Day Length:

15 h. 17 min.

St. John's in May

Minimum:

33.0°F

Average:

35.1°F

Maximum:

36.9°F

Sea water temperature in St. John's today

As of now, in St. John's, the water temperature is 36.8°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 about the same as the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 39.0°F on 2021, while the historical minimum was 35.0°F on 2019.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 37.9°F, with minimum temperature starting at 37.1°F, while the maximum might reach 38.6°F.

Daily water temperature in St. John's

Date	Current Year actual* / forecast**	last year	10 years average
May 5	34.2°F	34.5°F	34.5°F
May 6	33.8°F	35.2°F	34.8°F
May 7	35.3°F	35.8°F	35.1°F
May 8	36.1°F	36.4°F	35.6°F
May 9	35.1°F	36.5°F	35.6°F
May 10	35.5°F	36.5°F	35.5°F
May 11	36.2°F	36.6°F	35.7°F
May 12	35.0°F	36.6°F	35.6°F
May 13	35.0°F	36.1°F	35.9°F
May 14	34.5°F	35.8°F	35.9°F
May 15	36.3°F	36.0°F	36.1°F
May 16	35.9°F	37.3°F	36.3°F
May 17	36.9°F	37.3°F	36.6°F
May 18	36.3°F	38.3°F	36.8°F
May 19	36.8°F	36.8°F	36.8°F
May 20	37.1°F	36.5°F	37.1°F
May 21	37.2°F	36.4°F	37.2°F
May 22	37.6°F	36.4°F	37.6°F
May 23	38.2°F	37.4°F	38.2°F
May 24	38.4°F	38.4°F	38.4°F
May 25	38.6°F	38.5°F	38.6°F
May 26	38.5°F	38.5°F	38.5°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.