The best time for a Scandinavia vacation package depends on which destination you choose.
Reykjavik is busiest in July and August, when average temperatures are around 52-53°F and highs reach 56-57°F. If you'd prefer fewer crowds, January is quieter, with average temperatures around 32°F and highs near 35°F.
Copenhagen sees peak demand in June and September; June offers average temperatures around 61°F with highs of 66°F and hosts the Distortion festival, while September has average temperatures around 59°F with highs of 63°F and the Copenhagen Half Marathon. For a quieter trip, January is typically less busy, with average temperatures around 35°F and highs near 37°F.
Stockholm is most popular in September and June. September has average temperatures around 55°F with highs of 61°F, and June sees average temperatures around 60°F with highs of 66°F. If you'd prefer fewer visitors, January is quieter, with average temperatures around 29°F and highs near 32°F.
Oslo is busiest in June and September, with June seeing average temperatures around 57°F and highs of 65°F, and September having average temperatures around 51°F and highs of 58°F. For fewer crowds, January is quieter, with average temperatures around 21°F and highs near 25°F.
Helsinki experiences peak demand in June, August, and September. June has average temperatures around 59°F with highs of 64°F, while August and September both see average temperatures around 55°F with highs of 59°F. If you'd prefer fewer crowds, January is quieter, with average temperatures around 25°F and highs near 28°F.