Current Sea Water Temperature:
+40.6°F
| Maximum Sea Water Temperature in December: | 49.0°F |
| Minimum Sea Water Temperature in December: | 34.8°F |
| Average water temperature in December: | 41.6°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 17 | 40.6°F | December 12 | 41.6°F |
| December 16 | 40.6°F | December 11 | 42.0°F |
| December 15 | 40.6°F | December 10 | 42.4°F |
| December 14 | 40.6°F | December 09 | 43.0°F |
| December 13 | 41.0°F | December 08 | 43.4°F |
When is the Warmest Sea for Montreal?
According to our data for the last three years for Montreal the highest average sea water temperature was in July, August and September.
Average Water Temperature by Month, °F
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Montreal was 78.7°F. The maximum and minimum values were 74.2°F and 82.4°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Montreal was 77.4°F. The maximum and minimum values were 70.8°F and 82.4°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Montreal was 68.6°F. The maximum and minimum values were 65.8°F and 71.8°F respectively.
Canada Resorts:
NAME
F°
| Halifax |  |
+40 |
| Kingston | |
+34 |
| Moncton | |
+34 |
| Montreal | |
+34 |
| Nanaimo |  |
+42 |
| Niagara Falls |  |
+34 |
| Ottawa | |
+30 |
| Prince Edward Island | |
+36 |
| Quebec |  |
+32 |
| St. John's | |
+40 |
| Sydney | |
+42 |
| Toronto |  |
+34 |
| Vancouver | |
+42 |
| Victoria | |
+46 |
| Winnipeg | |
+24 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Montreal
Local time: 19:19
17 dec, wednesday
| 2100 |  |
26°F | E 14 mph |
18 dec, thursday
| 0000 | |
18°F | E 12 mph |
| 0300 |  |
14°F | E 4 mph |
| 0600 |  |
16°F | N 2 mph |
| 0900 | |
20°F | NW 2 mph |
| 1200 |  |
28°F | NW 7 mph |
| 1500 |  |
32°F | NW 9 mph |
| 1800 | |
34°F | N 9 mph |