Åland has four distinctly different seasons and in the summer months temperatures can reach highs of +30C. You will see a lot of people go swimming in the sea in July and August. The winter is cold, but not as cold as it can be in other pars of Scandinavia. The archipelago is warmer and get less snow due to the warming effect of the sea along the long coastline. But still, be prepared for a cold winter with an average of -5C to -10C.