Karlstad, where it's located

The climate of Karlstad is Baltic, that is, moderately continental, with cold winters, during which the average temperature is a few degrees below freezing, and mild summers.
The city is located in southern Sweden, on the northern shore of Lake Vänern, the largest Swedish lake.
The average temperature of the coldest month (January) is of -2.8 °C (27 °F), that of the warmest month (July) is of 17.7 °C (64 °F). However, during polar cold spells, the temperature can drop to -25 °C (-13 °F) or below, while in summer, it can reach 28/30 °C (82/86 °F), although rarely. Here are the average temperatures.
Karlstad - Average temperatures
Min (°C)-5-5-316101212830-4
Max (°C)0151117202321171051
Min (°F)232327344350545446373225
Max (°F)323441526368737063504134

Precipitation amounts to 705 millimeters (27.8 inches) per year: so, it is at an intermediate level. It ranges from 30 mm (1.2 in) in the driest month (March) to 100 mm (3.9 in) in the wettest (August). Here is the average precipitation.
Karlstad - Average precipitation

On average, there are around 1,925 sunshine hours per year. In summer, also due to the length of the days, the sunshine amount is quite good, and definitely better than in Norway. Here are the average sunshine hours per day.
Karlstad - Sunshine


Best Time

The best time to visit Karlstad is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.