18.05
mon
mon
Day
81°F
W 19 mph
Precip.
0%
0%
Night
79°F
W 22 mph
Precip.
76%
76%
19.05
tue
tue
Day
81°F
W 22 mph
Precip.
86%
86%
Night
79°F
W 22 mph
Precip.
69%
69%
20.05
wed
wed
Day
81°F
W 19 mph
Precip.
0%
0%
Night
79°F
W 18 mph
Precip.
71%
71%
21.05
thu
thu
Day
81°F
W 19 mph
Precip.
0%
0%
Night
79°F
W 17 mph
Precip.
88%
88%
22.05
fri
fri
Day
81°F
W 17 mph
Precip.
77%
77%
Night
81°F
W 20 mph
Precip.
0%
0%
23.05
sat
sat
Day
81°F
W 19 mph
Precip.
73%
73%
Night
81°F
W 20 mph
Precip.
21%
21%
24.05
sun
sun
Day
81°F
W 21 mph
Precip.
100%
100%
Night
81°F
W 21 mph
Precip.
73%
73%
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 May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 82.2°F. The highest and lowest sea temperatures during the month were 82.4°F and 81.5°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 83.3°F and 81.7°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: 22:09
May 19, tuesday
0000
79°F
W
22 mph
22 mph
0300
79°F
W
21 mph
21 mph
0600
79°F
W
21 mph
21 mph
0900
81°F
W
22 mph
22 mph
1200
81°F
W
22 mph
22 mph
1500
81°F
W
21 mph
21 mph
1800
81°F
W
20 mph
20 mph
2100
81°F
W
21 mph
21 mph
