World Resorts Canada Saint John Weather

Saint John 14 Days Forecast

27.07
mon
Day
72°F
W 6 mph
Precip.
7%
Night
61°F
S 2 mph
Precip.
13%
28.07
tue
Day
70°F
N 6 mph
Precip.
3%
Night
54°F
N 3 mph
Precip.
19%
29.07
wed
Day
70°F
NW 6 mph
Precip.
3%
Night
61°F
W 6 mph
Precip.
21%
30.07
thu
Day
72°F
W 12 mph
Precip.
4%
Night
63°F
SW 8 mph
Precip.
20%
31.07
fri
Day
64°F
W 9 mph
Precip.
25%
Night
61°F
W 2 mph
Precip.
39%
01.08
sat
Day
66°F
W 6 mph
Precip.
24%
Night
63°F
W 1 mph
Precip.
39%
02.08
sun
Day
70°F
NW 2 mph
Precip.
23%
Night
57°F
NE 3 mph
Precip.
43%
03.08
mon
Day
72°F
N 6 mph
Precip.
17%
Night
59°F
NE 2 mph
Precip.
32%
04.08
tue
Day
63°F
W 7 mph
Precip.
88%
Night
61°F
NW 5 mph
Precip.
52%
05.08
wed
Day
63°F
NE 5 mph
Precip.
49%
Night
61°F
N 6 mph
Precip.
45%
06.08
thu
Day
64°F
NE 7 mph
Precip.
37%
Night
59°F
NE 3 mph
Precip.
44%
07.08
fri
Day
75°F
E 6 mph
Precip.
2%
Night
59°F
N 1 mph
Precip.
7%
08.08
sat
Day
72°F
NE 9 mph
Precip.
3%
Night
57°F
NE 3 mph
Precip.
43%
09.08
sun
Day
64°F
NE 5 mph
Precip.
55%
Night
63°F
E 2 mph
Precip.
55%

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

Sunniest months:
September 10 days
October 10 days
August 9 days
Warmest months:
July 72.4 °F
August 71.8 °F
June 67.7 °F
Warmest sea temp:
August 59.6 °F
September 58.4 °F
July 56.5 °F
Coldest months:
January 25.6 °F
February 26.3 °F
December 32.4 °F
Rainiest months:
July 3 days
October 3 days
May 2 days
Windiest months:
March 9.0 mph
December 9.0 mph
February 8.6 mph

Saint John on a weather map

Saint John
+68°F
SW 1 mph
Feels like: +68°F
Precip.: 5%
Places in Canada:
Name
°F
+73°F
+73°F
+72°F
+81°F
+66°F
+50°F
+70°F
+70°F
+75°F
+73°F
+52°F
+61°F
+72°F
24 Hours Forecast
Saint John
Local time: 21:35
July 28, tuesday
0000
61°F
S
2 mph
0300
55°F
SW
2 mph
0600
55°F
NE
0 mph
0900
66°F
NW
2 mph
1200
70°F
N
6 mph
1500
72°F
NE
7 mph
1800
70°F
NE
7 mph
2100
57°F
NE
5 mph
Units of measurement: °C / °F