Measurements:
°C
°F
CURRENT WEATHER
05:50
Saint John
30°F
S 5 mph
Feels like: 24°F
Precip: 0%
World Resorts Canada Saint John Weather

7 Day Weather Forecast

04.21
tue
DAY
38°F
SE 3 mph
precip
0%
NIGHT
26°F
E 6 mph
precip
0%
04.22
wed
DAY
42°F
NE 9 mph
precip
0%
NIGHT
34°F
NE 9 mph
precip
57%
04.23
thu
DAY
38°F
N 2 mph
precip
100%
NIGHT
36°F
SE 4 mph
precip
100%
04.24
fri
DAY
40°F
S 9 mph
precip
100%
NIGHT
30°F
S 4 mph
precip
0%
04.25
sat
DAY
42°F
SE 7 mph
precip
77%
NIGHT
40°F
SE 5 mph
precip
0%
04.26
sun
DAY
44°F
SW 8 mph
precip
74%
NIGHT
34°F
SW 6 mph
precip
0%
04.27
mon
DAY
50°F
W 7 mph
precip
0%
NIGHT
34°F
SW 5 mph
precip
0%

Saint John Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Saint John was 2.6°F. The maximum and minimum values were 1.6°F and 3.7°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 75.1 °F
August 74.3 °F
June 70.1 °F
Warmest sea temperature:
August 60.6 °F
September 59.3 °F
July 57.7 °F
The most cold months:
January 22.9 °F
February 23.7 °F
December 30.5 °F
The most rainy months:
July 3 days
October 3 days
June 2 days
The most windy months:
March 9 mph
December 9 mph
February 8 mph
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