What's the weather like in Stockholm, Sweden in May 2020? Temperature The average high-temperature, in May, is 15.7°C (60.3°F), while the average low-temperature is 6.3°C (43.3°F). May, the last month of the spring, in Stockholm, is a mild month, with average temperature ranging between min 6.3°C (43.3°F) and max 15.7°C (60.3°F). 6°C sea temperature; Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec. And beware, Swedes LOVE to talk about the weather. Sweden weather averages and temperatures for May; Location Avg temp (°C °F) Max temp (°C °F) Min temp (°C °F) Rainfall (mm) Sunshine (hrs) Billingsfors: 14.8 °C 58.6 °F: 15.1 59.2: 4.3 39.7: 50 mm 2 ins: 8 hrs: Temperature In May, the average high-temperature is 16.8°C (62.2°F), and the average low-temperature is 7.4°C (45.3°F). The average minimum temperature (usually the minimum temperature is noted during the night) in Stockholm in May is 5.0°C (41°F). The May weather guide for Stockholm, Sweden shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute.Find out more about our data sources. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 6°C (43°F) is normal. The climate in Stockholm during May can be summarized as mild and dry. Climate: Sweden's climate is milder than expected (considering its location), as like most of Scandinavia it's warmed by the Gulf Stream and North Atlantic Drift.Conditions are quite pleasant from May through July, with average daily high temps in the mid-70's, while mid-60's are common in the north. Fall in Sweden is dominated by cool, cloudy weather and increased rainfall. Sweden temperatures & weather in May. Stockholm Weather in May. There is a temporary travel ban from countries outside the EU to Sweden until 15 June. In Sweden the climate is characterised by the changing seasons – with big differences in temperature. May is in the spring in Stockholm and is typically the 5th warmest month of the year. The amount of rain in May is normal with an average of 34mm (1.3in). The last month of the spring, May, is a comfortable month in Helsingborg, Sweden, with average temperature fluctuating between 7.4°C (45.3°F) and 16.8°C (62.2°F). Temperatures can vary widely throughout the country; the northern part of the country will already be experiencing frosts regularly and sometimes snowfall, while the south can still be quite pleasant. Rainfall In May… Weather reports from May 2016 in Stockholm, Sweden with highs and lows Average Weather during May in Stockholm (Stockholm county), Sweden. The average maximum temperature lies around 15.0°C (59°F).