18.03
wed
wed
Day
79°F
W 21 mph
Precip.
100%
100%
Night
77°F
W 19 mph
Precip.
100%
100%
19.03
thu
thu
Day
79°F
W 19 mph
Precip.
100%
100%
Night
77°F
W 16 mph
Precip.
78%
78%
20.03
fri
fri
Day
79°F
NW 16 mph
Precip.
0%
0%
Night
77°F
W 14 mph
Precip.
63%
63%
21.03
sat
sat
Day
79°F
W 13 mph
Precip.
72%
72%
Night
77°F
W 12 mph
Precip.
100%
100%
22.03
sun
sun
Day
79°F
W 12 mph
Precip.
62%
62%
Night
77°F
W 12 mph
Precip.
0%
0%
23.03
mon
mon
Day
79°F
W 14 mph
Precip.
0%
0%
Night
77°F
W 13 mph
Precip.
47%
47%
24.03
tue
tue
Day
79°F
W 15 mph
Precip.
0%
0%
Night
77°F
W 14 mph
Precip.
23%
23%
sea water
temperature
temperature
| St John's |
monthly
weather
weather
| St John's |
current
weather
weather
| St John's |
14 days
forecast
forecast
| St John's |
Sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 79.8°F. The highest and lowest sea temperatures during the month were 80.1°F and 79.2°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 80.8°F. The highest and lowest sea temperatures during the month were 81.7°F and 79.9°F.
Air temperature in St John's, °F
Precipitation total in St John's, in.
* Charts above show average data for the last 3 years.
Best time for vacation in St John's
St John's on a weather map
24 Hours Forecast
St John's
Local time: 19:32
March 18, wednesday
2100
77°F
W
19 mph
19 mph
March 19, thursday
0000
77°F
W
19 mph
19 mph
0300
77°F
W
21 mph
21 mph
0600
77°F
W
19 mph
19 mph
0900
77°F
W
20 mph
20 mph
1200
79°F
W
19 mph
19 mph
1500
79°F
W
17 mph
17 mph
1800
77°F
W
16 mph
16 mph
