Measurements:
°C
°F
Saint John
42°F
SE 10 mph
Feels like: 36°F
Precip: 0%
World Resorts Canada Saint John Weather October Weather in Saint John

Saint John Weather: October

Average Day Temperature: 56.9°F
Average Night Temperature: 45.8°F
Sea Water Temperature: 56.3°F
Number of Sunny Days: 10 days
Sunshine Hours: 10.2 - 11.7 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.3 in

Air Temperature in October, °F

Select Year: 2025 2024 2023

The highest day temperature in October 2025 was 79°F. The lowest night temperature was 33°F. The average values for day and night temperatures during October were 57.5°F и 45.1°F respectivly.

Saint John Water Sea Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Saint John was 55.4°F. The maximum and minimum values were 52.8°F and 58.8°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during October. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in October, in

Precipitation total in October for Saint John is 1.3 in. It makes october one of the most rainy months of the year.

Wind Speed in October, mph

The average wind speed in October is 7.0 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Saint John in October is 5.6 hours.

Best Time to Visit Saint John
The most sunny months:
September 10 days
October 10 days
August 9 days
The most warm months:
July 75.1 °F
August 74.3 °F
June 70.1 °F
Warmest sea temperature:
August 60.6 °F
September 59.3 °F
July 57.7 °F
The most cold months:
January 22.9 °F
February 23.2 °F
December 30.5 °F
The most rainy months:
October 3 days
July 3 days
June 2 days
The most windy months:
December 9 mph
March 9 mph
February 8 mph

Saint John on the Weather Map

Canada Resorts:
NAME
Halifax +44
Kingston +32
Montreal +34
Niagara Falls +42
Ottawa +30
Prince Edward Island +36
Quebec +28
Saint John +42
St. John's +34
Sydney +38
Toronto +36
Vancouver +48
Victoria +48
Winnipeg +14
Yellowknife -8
24 Hours Weather Forecast
Saint John
Local time: 16:23
10 jan, saturday
1800 36°F
SE
6 mph
2100 30°F
E
2 mph
11 jan, sunday
0000 28°F
SW
4 mph
0300 28°F
W
6 mph
0600 28°F
W
9 mph
0900 28°F
W
10 mph
1200 28°F
W
10 mph
1500 30°F
W
9 mph