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Saint John weather in October

Weather in Saint John: October

Average day temperature: 56.2°F
Average night temperature: 46.2°F
Sea water temperature: 55.7°F
Number of sunny days: 10 days
Day length: 10.2 - 11.7 hours
Number of rainy days: 3 days
Precipitation totals: 1.3 in.

Air temperature in October, °F

Show year:
2025
2024
2023

The highest day temperature during October of 2025 was 76°F. At the same time the lowest night temperature was 34°F. Daily and nightly averages during October were 56.8°F and 45.6°F.

Sea water temperature in Saint John in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 54.9°F. The highest and lowest sea temperatures during the month were 57.9°F and 52.5°F.

Sunny, partly cloudy and cloudy days

Number of sunny, partly cloudy and cloudy days in October is almost equal.

Precipitation total in October, in.

Precipitation total value in Saint John in October is 1.3 in. Other months of the year show relatively similar values.

Wind speed in October, mph

The average wind speed value in October is 7.0 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in October is: 5.5.

Best time for vacation in Saint John

Sunniest months:
September 10 days
October 10 days
August 9 days
Warmest months:
July 72.6 °F
August 71.8 °F
June 68.1 °F
Warmest sea temp:
August 59.6 °F
September 58.4 °F
July 56.9 °F
Coldest months:
January 25.6 °F
February 25.9 °F
December 33.3 °F
Rainiest months:
July 3 days
October 3 days
December 2 days
Windiest months:
March 8.8 mph
February 8.6 mph
December 8.5 mph

Saint John on a weather map

Saint John
+39°F
NE 7 mph
Feels like: +34°F
Precip.: 0%
Places in Canada:
Name
°F
+43°F
+43°F
-6°F
+41°F
+30°F
+46°F
+36°F
+43°F
+43°F
+55°F
+39°F
+36°F
+37°F
+54°F
24 Hours Forecast
Saint John
Local time: 15:54
December 18, thursday
1800
39°F
N
13 mph
2100
39°F
N
18 mph
December 19, friday
0000
41°F
NE
18 mph
0300
43°F
N
17 mph
0600
45°F
N
18 mph
0900
46°F
N
17 mph
1200
48°F
N
21 mph
1500
52°F
N
24 mph
Units of measurement: °C / °F