05.19
tue
tue
DAY
50°F
N 6 mph
precip
0%
0%
NIGHT
52°F
NE 5 mph
precip
100%
100%
05.20
wed
wed
DAY
70°F
NE 10 mph
precip
100%
100%
NIGHT
58°F
SE 13 mph
precip
0%
0%
05.21
thu
thu
DAY
52°F
SE 14 mph
precip
0%
0%
NIGHT
40°F
SE 5 mph
precip
0%
0%
05.22
fri
fri
DAY
56°F
SE 12 mph
precip
0%
0%
NIGHT
46°F
SE 5 mph
precip
0%
0%
05.23
sat
sat
DAY
56°F
S 10 mph
precip
0%
0%
NIGHT
40°F
NW 3 mph
precip
0%
0%
05.24
sun
sun
DAY
60°F
N 5 mph
precip
0%
0%
NIGHT
44°F
NE 4 mph
precip
0%
0%
05.25
mon
mon
DAY
58°F
NE 9 mph
precip
0%
0%
NIGHT
44°F
NE 7 mph
precip
0%
0%
05.26
tue
tue
DAY
58°F
NE 13 mph
precip
0%
0%
NIGHT
54°F
N 10 mph
precip
84%
84%
05.27
wed
wed
DAY
50°F
N 10 mph
precip
100%
100%
NIGHT
52°F
N 7 mph
precip
100%
100%
05.28
thu
thu
DAY
54°F
N 7 mph
precip
100%
100%
NIGHT
52°F
N 3 mph
precip
0%
0%
05.29
fri
fri
DAY
66°F
S 11 mph
precip
0%
0%
NIGHT
50°F
S 4 mph
precip
0%
0%
05.30
sat
sat
DAY
62°F
SW 7 mph
precip
0%
0%
NIGHT
44°F
SW 5 mph
precip
0%
0%
05.31
sun
sun
DAY
58°F
W 8 mph
precip
0%
0%
NIGHT
50°F
NW 3 mph
precip
0%
0%
06.01
mon
mon
DAY
54°F
NW 9 mph
precip
65%
65%
NIGHT
56°F
N 13 mph
precip
100%
100%
Sea water
temperature
temperature
| Saint John |
Weather in
May
May
| Saint John |
7 day weather
forecast
forecast
| Saint John |
10 day weather
forecast
forecast
| Saint John |
14 day weather
forecast
forecast
| Saint John |
Monthly weather
averages
averages
| Saint John |
Current Weather
Conditions
Conditions
| Saint John |
When is the Best
Time to Visit?
Time to Visit?
| Saint John |
Saint John Sea Water Temperature in May, °F
The average sea surface temperature in May 2026 for Saint John was 42.1°F. The maximum and minimum values were 38.4°F and 45.2°F respectively.
Saint John on the Weather Map
Canada Resorts:
NAME
F°
| Bonavista |  |
+38 |
| Halifax |  |
+52 |
| Les Iles-de-la-Madeleine | |
+44 |
| Montreal |  |
+74 |
| Ottawa | |
+74 |
| Prince Edward Island | |
+52 |
| Quebec | |
+52 |
| Saint John | |
+48 |
| Sydney |  |
+42 |
| Thunder Bay | |
+40 |
| Tofino | |
+52 |
| Toronto | |
+72 |
| Vancouver | |
+52 |
| Victoria | |
+50 |
| Winnipeg | |
+40 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Saint John
Local time: 10:20
19 may, tuesday
| 1200 | |
50°F | N 6 mph |
| 1500 | |
52°F | NE 6 mph |
| 1800 | |
56°F | N 6 mph |
| 2100 | |
54°F | NE 5 mph |
20 may, wednesday
| 0000 | |
52°F | NE 5 mph |
| 0300 |  |
50°F | N 4 mph |
| 0600 | |
52°F | NE 5 mph |
| 0900 | |
66°F | E 7 mph |