World Resorts Canada St. John's Weather

St. John's sea water temperature

Current sea water temperature:
+32.5°F
Minimum sea water temperature in February: 34.7°F
Maximum sea water temperature in February: 31.1°F
Average sea water temperature in February: 32.6°F

Sea water temperature for the last 10 days:

February 3 32.5°F January 29 32.4°F
February 2 32.7°F January 28 33.1°F
February 1 32.7°F January 27 33.4°F
January 31 32.2°F January 26 33.4°F
January 30 32.7°F January 25 33.1°F

When is the warmest sea in St. John's?

Based on the data about daily sea water temperature for the last three years the warmest sea in St. John's was noticed in August, September and July.

Monthly Sea Temperatures in St. John's, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 57.9°F. The highest and lowest sea temperatures during the month were 60.6°F and 55.6°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 56.1°F. The highest and lowest sea temperatures during the month were 58.5°F and 54.0°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 53.0°F. The highest and lowest sea temperatures during the month were 57.7°F and 47.3°F.

Best time for vacation in St. John's

Sunniest months:
August 9 days
September 7 days
July 7 days
Warmest months:
August 66.1 °F
July 64.5 °F
September 60.3 °F
Warmest sea temp:
August 59.3 °F
September 57.0 °F
July 53.0 °F
Coldest months:
February 27.8 °F
January 30.2 °F
March 31.7 °F
Rainiest months:
November 6 days
August 3 days
May 3 days
Windiest months:
February 16.5 mph
January 15.3 mph
December 15.3 mph

St. John's on a weather map

St. John's
+30°F
S 24 mph
Feels like: +18°F
Precip.: 0%
Places in Canada:
Name
°F
+48°F
+48°F
-20°F
+25°F
-11°F
0°F
+12°F
+12°F
+21°F
-2°F
+14°F
+30°F
+30°F
+19°F
24 Hours Forecast
St. John's
Local time: 09:13
February 03, tuesday
1200
30°F
S
22 mph
1500
28°F
S
19 mph
1800
27°F
S
17 mph
2100
25°F
SE
13 mph
February 04, wednesday
0000
21°F
SE
11 mph
0300
19°F
E
9 mph
0600
19°F
SE
11 mph
0900
23°F
SE
12 mph
Units of measurement: °C / °F