Harstad, where it's located

The climate of Harstad is is subpolar oceanic, with cold winters and very cool summers.
The city, once called Trondenes, has 23,000 inhabitants and is the second largest city in Troms County after Tromsø. It is located on the Norwegian coast, within a fjord. Since we are at the 68th parallel, therefore north of the Polar Circle, the sun does not rise (polar night) from December 3rd to January 9th, and does not set (midnight sun) from May 22nd to July 21st. The white nights occur as early as April 14th and until August 29th.
The average temperature of the coldest month (January) is of -2.4 °C (28 °F), that of the warmest month (July) is of 13.9 °C (57 °F). Here are the average temperatures.
Harstad - Average temperatures
Min (°C)-4-4-30471010730-2
Max (°C)-10261013171612731
Min (°F)252527323945505045373228
Max (°F)303236435055636154453734

Precipitation amounts to 850 millimeters (33.5 inches) per year: so, it is at an intermediate level. It ranges from 35 mm (1.4 in) in the driest months (May, June) to 110 mm (4.3 in) in the wettest (October). Here is the average precipitation.
Harstad - Average precipitation

The sea temperature ranges between 4 °C (39 °F) and 12 °C (54 °F). So, it is cold all year round. Here are the average sea temperatures.
Harstad - Sea temperature
Temp (°C)544468111211986
Temp (°F)413939394346525452484643


Best Time

The best time to visit Harstad is the summer, in July and August, since they are the mildest months. However, you must take into account cloudy skies, some rain and a bit of cold at night.