09.28
mon
mon
DAY
58°F
W 16 mph
precip
18%
18%
NIGHT
56°F
W 11 mph
precip
46%
46%
09.29
tue
tue
DAY
60°F
SW 7 mph
precip
56%
56%
NIGHT
54°F
S 11 mph
precip
34%
34%
09.30
wed
wed
DAY
58°F
S 6 mph
precip
29%
29%
NIGHT
56°F
NE 4 mph
precip
38%
38%
10.01
thu
thu
DAY
68°F
NE 6 mph
precip
18%
18%
NIGHT
56°F
NE 8 mph
precip
23%
23%
10.02
fri
fri
DAY
58°F
NE 7 mph
precip
49%
49%
NIGHT
52°F
SE 9 mph
precip
23%
23%
10.03
sat
sat
DAY
54°F
SE 11 mph
precip
2%
2%
NIGHT
38°F
S 4 mph
precip
6%
6%
10.04
sun
sun
DAY
52°F
E 4 mph
precip
1%
1%
NIGHT
44°F
N 6 mph
precip
19%
19%
10.05
mon
mon
DAY
56°F
NW 19 mph
precip
36%
36%
NIGHT
64°F
N 20 mph
precip
89%
89%
10.06
tue
tue
DAY
58°F
NE 17 mph
precip
20%
20%
NIGHT
48°F
E 9 mph
precip
8%
8%
10.07
wed
wed
DAY
54°F
SE 9 mph
precip
3%
3%
NIGHT
40°F
S 4 mph
precip
9%
9%
10.08
thu
thu
DAY
52°F
W 7 mph
precip
17%
17%
NIGHT
42°F
SW 7 mph
precip
15%
15%
10.09
fri
fri
DAY
54°F
SW 9 mph
precip
17%
17%
NIGHT
52°F
SW 9 mph
precip
29%
29%
10.10
sat
sat
DAY
52°F
SW 9 mph
precip
45%
45%
NIGHT
54°F
W 14 mph
precip
66%
66%
10.11
sun
sun
DAY
58°F
W 16 mph
precip
85%
85%
NIGHT
56°F
N 11 mph
precip
41%
41%
Sea water
temperature
temperature
| Saint John |
Weather in
October
October
| Saint John |
7 day weather
forecast
forecast
| Saint John |
10 day weather
forecast
forecast
| Saint John |
14 day weather
forecast
forecast
| Saint John |
Monthly weather
averages
averages
| Saint John |
Current Weather
Conditions
Conditions
| Saint John |
When is the Best
Time to Visit?
Time to Visit?
| Saint John |
Saint John Sea Water Temperature in September, °F
The average sea surface temperature in September 2026 for Saint John was 58.1°F. The maximum and minimum values were 56.6°F and 60.0°F respectively.
Saint John on the Weather Map
Canada Resorts:
NAME
F°
| Halifax |  |
+56 |
| Moncton | |
+54 |
| Montreal |  |
+52 |
| Nanaimo | |
+58 |
| Niagara Falls | |
+64 |
| Ottawa | |
+54 |
| Prince Edward Island | |
+56 |
| Quebec | |
+50 |
| Saint Andrews | |
+56 |
| St. John's |  |
+42 |
| Sydney | |
+54 |
| Toronto | |
+72 |
| Vancouver | |
+58 |
| Victoria |  |
+58 |
| Winnipeg | |
+52 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Saint John
Local time: 18:57
28 sep, monday
| 2100 | |
56°F | W 12 mph |
29 sep, tuesday
| 0000 | |
56°F | W 11 mph |
| 0300 | |
56°F | W 9 mph |
| 0600 | |
58°F | W 9 mph |
| 0900 | |
58°F | SW 9 mph |
| 1200 | |
60°F | SW 7 mph |
| 1500 | |
60°F | SW 6 mph |
| 1800 | |
58°F | S 8 mph |