Swimming in St. John's (Newfoundland and Labrador) in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in St. John's (Newfoundland and Labrador) in september 2025.
In september, according to seasonal norms, the sea temperature in St. John's (Newfoundland and Labrador) is:
Minimum: 48°F
Average: 54°F
Maximum: 60°F
Other useful seasonal weather averages in september:
- Outside temperature: 54°F to 60°F
- Most common weather: "Clear/Sunny"
- The wind blows at 6.8mph
- It rains a total of 5.3in, over 6 day(s).
Should we swim in St. John's (Newfoundland and Labrador) in september?
No... The water temperature in St. John's (Newfoundland and Labrador) in september is freezing
You won't be able to swim in St. John's (Newfoundland and Labrador) in september! The water temperature is freezing, reaching as low as 48°F (and only 60°F at best)! Our advice: if you are going to St. John's (Newfoundland and Labrador) this month, plan to sightsee and forget the beach!
Note also that in september, the climate is good with an average outside temperature of 57°F, 5.3in of precipitation (over 6 days) and 87.38 % humidity.
Water and normal seasonal temperatures in St. John's (Newfoundland and Labrador) in september
| September | |||
| Average sea temperature | 54°F | ||
| Minimum sea temperature | 48°F | ||
| Maximum sea temperature | 60°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 61°F | ||
| Minimum outside temperature | 56°F | ||
| Wind speed | 18mph | ||
| Wind temperature | 52°F | ||
| Precipitation | 5.3in | ||
| Number of days of rain | 6 jour(s) (19%) | ||
| Humidity | 88% | ||
| Visibility in kilometers | 9.11km | ||
| Cloud cover | 47% | ||
| Our opinion | freezing swimming |
Chart of the tides in september 2025
Tide times in september 2025 in St. John's (Newfoundland and Labrador)
Swim elsewhere in Canada in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Halifax in september | 62°F | 67°F | cold swimming | Quebec City in september | 55°F | 58°F | freezing swimming | Vancouver in september | 53°F | 54°F | freezing swimming | Saint John in september | 56°F | 58°F | freezing swimming | Tofino in september | 56°F | 60°F | freezing swimming | Victoria in september | 53°F | 55°F | freezing swimming | Bathurst in september | 54°F | 58°F | freezing swimming | Charlottetown in september | 61°F | 66°F | cold swimming | Nanaimo in september | 53°F | 55°F | freezing swimming |