Measurements:
°C
°F
CURRENT WEATHER
17:52
Saint John
66°F
SE 10 mph
Feels like: 66°F
Precip: 1%
World Resorts Canada Saint John Weather

14 Day Weather Forecast

09.08
tue
DAY
70°F
SE 11 mph
precip
36%
NIGHT
46°F
S 5 mph
precip
11%
09.09
wed
DAY
58°F
NE 7 mph
precip
13%
NIGHT
56°F
N 13 mph
precip
22%
09.10
thu
DAY
70°F
NE 12 mph
precip
22%
NIGHT
60°F
SE 12 mph
precip
23%
09.11
fri
DAY
60°F
SE 14 mph
precip
2%
NIGHT
48°F
SE 5 mph
precip
9%
09.12
sat
DAY
62°F
E 4 mph
precip
4%
NIGHT
50°F
N 4 mph
precip
14%
09.13
sun
DAY
62°F
NE 12 mph
precip
15%
NIGHT
56°F
NE 9 mph
precip
14%
09.14
mon
DAY
66°F
NE 14 mph
precip
23%
NIGHT
60°F
S 6 mph
precip
73%
09.15
tue
DAY
62°F
W 8 mph
precip
14%
NIGHT
58°F
NW 7 mph
precip
17%
09.16
wed
DAY
60°F
NE 8 mph
precip
35%
NIGHT
60°F
S 13 mph
precip
33%
09.17
thu
DAY
60°F
SE 12 mph
precip
1%
NIGHT
46°F
SE 6 mph
precip
8%
09.18
fri
DAY
60°F
NE 6 mph
precip
2%
NIGHT
54°F
NE 11 mph
precip
13%
09.19
sat
DAY
60°F
N 21 mph
precip
24%
NIGHT
50°F
SE 22 mph
precip
77%
09.20
sun
DAY
50°F
S 14 mph
precip
2%
NIGHT
40°F
SE 4 mph
precip
6%
09.21
mon
DAY
56°F
NE 9 mph
precip
3%
NIGHT
48°F
NE 8 mph
precip
13%

Saint John Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Saint John was 59.4°F. The maximum and minimum values were 57.4°F and 62.4°F respectively.

Saint John on the Weather Map

Best Time to Visit Saint John
The most sunny months:
September 10 days
October 10 days
August 9 days
The most warm months:
July 74.9 °F
August 73.8 °F
June 69.6 °F
Warmest sea temperature:
August 60.4 °F
September 59.3 °F
July 57.3 °F
The most cold months:
January 22.9 °F
February 23.7 °F
December 30.5 °F
The most rainy months:
August 3 days
October 3 days
July 3 days
The most windy months:
March 9 mph
December 9 mph
February 8 mph
more details
24 Hours Weather Forecast
Saint John
Local time: 17:52
08 sep, tuesday
1800 66°F
SE
10 mph
2100 52°F
SW
7 mph
09 sep, wednesday
0000 46°F
S
5 mph
0300 44°F
S
5 mph
0600 42°F
S
4 mph
0900 50°F
SE
2 mph
1200 58°F
NE
7 mph
1500 60°F
NE
8 mph