27.07
mon
mon
Day

72°F
W 6 mph
Precip.
7%
7%
Night

61°F
S 2 mph
Precip.
13%
13%
28.07
tue
tue
Day

70°F
N 6 mph
Precip.
3%
3%
Night

54°F
N 3 mph
Precip.
19%
19%
29.07
wed
wed
Day

70°F
NW 6 mph
Precip.
3%
3%
Night

61°F
W 6 mph
Precip.
21%
21%
30.07
thu
thu
Day

72°F
W 12 mph
Precip.
4%
4%
Night

63°F
SW 8 mph
Precip.
20%
20%
31.07
fri
fri
Day

64°F
W 9 mph
Precip.
25%
25%
Night

61°F
W 2 mph
Precip.
39%
39%
01.08
sat
sat
Day

66°F
W 6 mph
Precip.
24%
24%
Night

63°F
W 1 mph
Precip.
39%
39%
02.08
sun
sun
Day

70°F
NW 2 mph
Precip.
23%
23%
Night

57°F
NE 3 mph
Precip.
43%
43%
03.08
mon
mon
Day

72°F
N 6 mph
Precip.
17%
17%
Night

59°F
NE 2 mph
Precip.
32%
32%
04.08
tue
tue
Day

63°F
W 7 mph
Precip.
88%
88%
Night

61°F
NW 5 mph
Precip.
52%
52%
05.08
wed
wed
Day

63°F
NE 5 mph
Precip.
49%
49%
Night

61°F
N 6 mph
Precip.
45%
45%
06.08
thu
thu
Day

64°F
NE 7 mph
Precip.
37%
37%
Night

59°F
NE 3 mph
Precip.
44%
44%
07.08
fri
fri
Day

75°F
E 6 mph
Precip.
2%
2%
Night

59°F
N 1 mph
Precip.
7%
7%
08.08
sat
sat
Day

72°F
NE 9 mph
Precip.
3%
3%
Night

57°F
NE 3 mph
Precip.
43%
43%
09.08
sun
sun
Day

64°F
NE 5 mph
Precip.
55%
55%
Night

63°F
E 2 mph
Precip.
55%
55%
sea water
temperature
temperature
| Saint John |
monthly
weather
weather
| Saint John |
current
weather
weather
| Saint John |
7 days
forecast
forecast
| Saint John |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 54.0°F. The highest and lowest sea temperatures during the month were 60.8°F and 50.7°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 59.5°F. The highest and lowest sea temperatures during the month were 61.7°F and 57.2°F.
Air temperature in Saint John, °F
Precipitation total in Saint John, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Saint John
Saint John on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Saint John
Local time: 21:35
July 28, tuesday
0000

61°F
S
2 mph
2 mph
0300

55°F
SW
2 mph
2 mph
0600

55°F
NE
0 mph
0 mph
0900

66°F
NW
2 mph
2 mph
1200

70°F
N
6 mph
6 mph
1500

72°F
NE
7 mph
7 mph
1800

70°F
NE
7 mph
7 mph
2100

57°F
NE
5 mph
5 mph





























