Summerside Weather: December
 |
Average Day Temperature: | 30.4°F |
|
Average Night Temperature: | 28.2°F |
|
Sea Water Temperature: | 33.8°F |
|
Number of Sunny Days: | 6 days |
| Sunshine Hours: | 8.6 - 8.9 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.0 in | |
| detailed information | ||
forecast
| Summerside |
Temperature
| Summerside |
Air Temperature in December, °F
The highest day temperature in December 2025 was 48°F. The lowest night temperature was 5°F. The average values for day and night temperatures during December were 24.4°F и 20.6°F respectivly.
Summerside Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Summerside was 32.7°F. The maximum and minimum values were 28.8°F and 38.6°F respectively.
Most of the days in December are gloomy but you can also expect sunny days.
Precipitation Totals in December, in
Precipitation total in December for Summerside is 1.0 in. It makes december one of the least rainy months of the year.
The average wind speed in December is 16.2 mph. It makes December one of the most windy months of the year for Summerside.
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 Summerside in December is 3.1 hours.
Summerside on the Weather Map
| Halifax |  |
+34 |
| Kingston |  |
+30 |
| Montreal | |
+32 |
| Niagara Falls | |
+28 |
| Ottawa |  |
+28 |
| Prince Edward Island | |
+28 |
| Quebec |  |
+24 |
| Saint John | |
+32 |
| St. John's |  |
+24 |
| Sydney | |
+28 |
| Toronto | |
+26 |
| Vancouver | |
+44 |
| Victoria | |
+48 |
| Winnipeg |  |
+18 |
| Yellowknife |  |
-14 |
| 1800 |  |
28°F | W 18 mph |
| 2100 |  |
28°F | W 17 mph |
| 0000 | |
28°F | W 19 mph |
| 0300 | |
30°F | SW 14 mph |
| 0600 | |
26°F | S 6 mph |
| 0900 | |
24°F | SE 34 mph |
| 1200 |  |
22°F | SE 30 mph |
| 1500 | |
22°F | SE 25 mph |