World Resorts Canada Saint John Weather

Saint John 7 Days Forecast

17.05
sun
Day
75°F
E 11 mph
Precip.
0%
Night
50°F
SE 7 mph
Precip.
0%
18.05
mon
Day
59°F
SE 6 mph
Precip.
0%
Night
48°F
NE 7 mph
Precip.
0%
19.05
tue
Day
59°F
NE 8 mph
Precip.
0%
Night
50°F
N 4 mph
Precip.
86%
20.05
wed
Day
70°F
NE 9 mph
Precip.
0%
Night
54°F
SE 10 mph
Precip.
0%
21.05
thu
Day
52°F
SE 13 mph
Precip.
0%
Night
41°F
SE 5 mph
Precip.
0%
22.05
fri
Day
55°F
E 8 mph
Precip.
0%
Night
45°F
NE 7 mph
Precip.
0%
23.05
sat
Day
43°F
W 11 mph
Precip.
100%
Night
43°F
SW 3 mph
Precip.
76%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 42.6°F. The highest and lowest sea temperatures during the month were 44.6°F and 39.6°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 72.6 °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 26.3 °F
December 32.4 °F
Rainiest months:
July 3 days
October 3 days
November 2 days
Windiest months:
March 9.0 mph
December 9.0 mph
February 8.6 mph

Saint John on a weather map

Current weather
17:51
Saint John
+73°F
SE 12 mph
Feels like: +75°F
Precip.: 0%
Places in Canada:
Name
°F
Bonavista
+46°F
Vancouver
+66°F
Victoria
+64°F
Winnipeg
+57°F
Halifax
+75°F
Quebec
+63°F
Les Iles-de-la-Madeleine
+46°F
Montreal
+75°F
Prince Edward Island
+63°F
Ottawa
+77°F
Saint John
+73°F
Sydney
+61°F
Thunder Bay
+54°F
Toronto
+79°F
Tofino
+57°F
all places
24 Hours Forecast
Saint John
Local time: 17:51
May 17, sunday
1800
73°F
SE
12 mph
2100
61°F
SE
11 mph
May 18, monday
0000
50°F
SE
7 mph
0300
43°F
SE
5 mph
0600
41°F
SE
5 mph
0900
52°F
SE
7 mph
1200
59°F
SE
6 mph
1500
61°F
NE
9 mph
Units of measurement: °C / °F