World Resorts Canada St. John's Weather

St. John's Sea Temperature in May

Average sea water temperature in May:
+37.0°F
Minimum sea water temperature in May: 42.8°F
Maximum sea water temperature in May: 32.2°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 36.7°F. The highest and lowest sea temperatures during the month were 38.5°F and 34.5°F.

Monthly sea water temperature in St. John's, °F

Which Canada resorts have warmest sea in May?

Place name May 2025 May 2024
Montreal 56.6°F 60.4°F
Surrey 56.6°F 55.1°F
North Vancouver 55.9°F 54.1°F
Vancouver 55.7°F 54.1°F
Windsor 55.6°F 56.7°F
Nanaimo 54.8°F 53.9°F
Tofino 52.0°F 51.7°F
Victoria 48.9°F 49.0°F
Niagara Falls 48.9°F 54.2°F
Niagara-on-the-Lake 48.1°F 53.2°F
Kingston 48.0°F 53.4°F
Quebec 48.0°F 51.2°F
Summerside 47.2°F 47.3°F
Hamilton 47.0°F 51.7°F
Lunenburg 46.2°F 46.8°F
Charlottetown 45.5°F 47.1°F
Mississauga 45.3°F 50.9°F
Barrie 45.2°F 51.2°F
Halifax 45.2°F 44.6°F
Moncton 45.0°F 45.7°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
March 15.3 mph
January 15.0 mph

St. John's on a weather map

St. John's
+37°F
NW 17 mph
Feels like: +27°F
Precip.: 100%
Places in Canada:
Name
°F
+43°F
+45°F
+12°F
+10°F
-6°F
+9°F
-4°F
+3°F
+14°F
0°F
+25°F
+37°F
+19°F
+14°F
24 Hours Forecast
St. John's
Local time: 05:51
December 05, friday
0600
37°F
NW
17 mph
0900
36°F
NW
16 mph
1200
27°F
E
34 mph
1500
21°F
E
31 mph
1800
21°F
E
34 mph
2100
23°F
E
40 mph
December 06, saturday
0000
23°F
E
40 mph
0300
21°F
E
39 mph
Units of measurement: °C / °F