St. John's Weather: May
 |
Average Day Temperature: | 44.8°F |
|
Average Night Temperature: | 38.0°F |
|
Sea Water Temperature: | 35.4°F |
|
Number of Sunny Days: | 5 days |
| Sunshine Hours: | 14.5 - 15.7 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 1.5 in | |
| detailed information | ||
forecast
| St. John's |
Temperature
| St. John's |
Air Temperature in May, °F
The highest day temperature in May 2026 was 62°F. The lowest night temperature was 33°F. The average values for day and night temperatures during May were 45.9°F и 38.9°F respectivly.
St. John's Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for St. John's was 34.3°F. The maximum and minimum values were 32.0°F and 37.2°F respectively.
Most of the days in May are gloomy but you can also expect sunny days.
Precipitation Totals in May, in
Precipitation total in May for St. John's is 1.5 in. It makes may one of the least rainy months of the year.
The average wind speed in May is 11.8 mph. It makes May one of the most windless months of the year for St. John's.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St. John's in May is 5.4 hours.
St. John's on the Weather Map
| Bonavista |  |
+36 |
| Halifax |  |
+42 |
| Les Iles-de-la-Madeleine | |
+38 |
| Montreal | |
+48 |
| Ottawa |  |
+48 |
| Prince Edward Island | |
+42 |
| Quebec | |
+44 |
| Saint John | |
+40 |
| Sydney | |
+38 |
| Thunder Bay | |
+56 |
| Tofino | |
+46 |
| Toronto | |
+48 |
| Vancouver | |
+54 |
| Victoria | |
+48 |
| Winnipeg | |
+76 |
| 0600 |  |
38°F | SW 21 mph |
| 0900 | |
38°F | SW 21 mph |
| 1200 | |
38°F | S 21 mph |
| 1500 | |
36°F | S 23 mph |
| 1800 |  |
36°F | S 23 mph |
| 2100 | |
36°F | S 21 mph |
| 0000 | |
36°F | S 18 mph |
| 0300 | |
36°F | S 15 mph |