Measurements:
°C
°F
CURRENT WEATHER
20:06
Saint John
46°F
NE 6 mph
Feels like: 44°F
Precip: 0%
World Resorts Canada Saint John Weather

7 Day Weather Forecast

03.17
mon
DAY
50°F
NE 14 mph
precip
0%
NIGHT
44°F
SE 11 mph
precip
0%
03.18
tue
DAY
36°F
SW 7 mph
precip
0%
NIGHT
30°F
SW 2 mph
precip
0%
03.19
wed
DAY
44°F
SW 6 mph
precip
0%
NIGHT
32°F
W 4 mph
precip
0%
03.20
thu
DAY
46°F
N 12 mph
precip
0%
NIGHT
38°F
N 7 mph
precip
0%
03.21
fri
DAY
40°F
SW 7 mph
precip
100%
NIGHT
38°F
S 12 mph
precip
100%
03.22
sat
DAY
34°F
S 13 mph
precip
100%
NIGHT
32°F
SE 16 mph
precip
100%
03.23
sun
DAY
32°F
SE 14 mph
precip
0%
NIGHT
18°F
SE 4 mph
precip
0%

Saint John Sea Water Temperature in March, °F

Select Year: 2025 2024 2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
2
4
6
8

The average sea surface temperature in March 2025 for Saint John was 2.4°F. The maximum and minimum values were 2.0°F and 3.0°F respectively.

Saint John on the Weather Map

Best Time to Visit Saint John
The most sunny months:
September 10 days
August 9 days
October 9 days
The most warm months:
July 76.3 °F
August 75.0 °F
June 70.6 °F
Warmest sea temperature:
August 60.6 °F
September 59.3 °F
July 58.0 °F
The most cold months:
January 22.9 °F
February 23.2 °F
December 31.4 °F
The most rainy months:
July 4 days
March 3 days
October 3 days
The most windy months:
March 9 mph
February 8 mph
December 8 mph
more details