Current Sea Water Temperature:
+49.4°F
| Maximum Sea Water Temperature in May: | 56.4°F |
| Minimum Sea Water Temperature in May: | 35.6°F |
| Average water temperature in May: | 46.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 19 | 49.4°F | May 14 | 47.2°F |
| May 18 | 48.4°F | May 13 | 44.0°F |
| May 17 | 47.8°F | May 12 | 44.4°F |
| May 16 | 44.8°F | May 11 | 45.0°F |
| May 15 | 44.8°F | May 10 | 45.6°F |
When is the Warmest Sea for Summerside?
According to our data for the last three years for Summerside the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Summerside was 72.4°F. The maximum and minimum values were 69.2°F and 77.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Summerside was 70.8°F. The maximum and minimum values were 63.8°F and 76.8°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Summerside was 68.0°F. The maximum and minimum values were 62.6°F and 72.2°F respectively.
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
Summerside
Local time: 10:18
19 may, tuesday
| 1200 |  |
62°F | N 12 mph |
| 1500 | |
72°F | E 2 mph |
| 1800 |  |
60°F | S 4 mph |
| 2100 |  |
50°F | SW 2 mph |
20 may, wednesday
| 0000 |  |
50°F | N 4 mph |
| 0300 | |
52°F | N 12 mph |
| 0600 |  |
52°F | NE 11 mph |
| 0900 | |
58°F | NE 13 mph |