Kristiansand, where it's located

The climate of Kristiansand is Baltic, that is to say, relatively continental, with cold winters and mild summers.
The city is located on the southern coast of Norway, which however is not the mildest area, because it is a little less exposed to ocean currents than the west coast.
The average temperature of the coldest month (January) is of -2 °C (28 °F), that of the warmest month (July) is of 15.5 °C (60 °F). Here are the average temperatures recorded at the airport, which is located inside a fjord, so it is a bit colder in winter.
Kristiansand - Average temperatures
Min (°C)-5-5-21691110850-3
Max (°C)124914192019161163
Min (°F)232328344348525046413227
Max (°F)343639485766686661524337

Precipitation amounts to 1,300 millimeters (51.2 inches) per year: it is therefore quite abundant. It ranges from 60 mm (2.4 in) in the driest month (April) to 165 mm (6.5 in) in the wettest ones (October, November). Here is the average precipitation.
Kristiansand - Average precipitation

On average, there are around 1,795 sunshine hours per year. In summer, in this stretch of coast facing south, the sunshine amount is quite good, and better than in the rest of Norway. Here are the average sunshine hours per day.
Kristiansand - Sunshine

The sea temperature ranges between 5 °C (41 °F) and 17 °C (63 °F). So, it never becomes warm for swimming. Here are the average sea temperatures.
Kristiansand - Sea temperature
Temp (°C)6556101316171512108
Temp (°F)434141435055616359545046


Best Time

The best time to visit Kristiansand 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.