Weather forecast from yr.no. Weather forecast in mobile app. Weather forecast in mobile app. January weather forecast for Helsinki, Finland. Weather in Helsinki in July 2020. Day by day forecast. Averages are for Helsinki Malmi Airport, which is 7 miles from Helsinki. The amount of rain in June is normal with an average of 44mm (1.7in). See weather overview. January, February, November and December, with an average maximum UV index of 0, are months with the lowest UV index. High Temp: 71 °F. Weather forecast in mobile app. Average Day Temperature: 54.7°F: Average Night Temperature: 44.9°F: Sea Water Temperature: 44.3°F: Number of Sunny Days: 15 days: Sunshine Hours: 16.0 - 18.3 hours: Number of Rainy Days: 3 days: Precipitation Totals: 1.4 in: detailed information: 14 day weather forecast. The average night-time temperature is usually a cold 5°C (41°F). ☂ Online precipitation map and other weather maps. Jan: -2°C/28°F, Feb: 2°C/36°F, Mar: 2°C/36°F, Apr: 9°C/48°F, May: 12°C/54°F, Jun: 19.5°C/67°F, Jul: 19°C/66°F, Aug: 19°C/66°F, Sep: 13°C/55°F, Oct: 8°C/46°F, Nov: 4.5°C/40°F, Dec: 3°C/37°F, The median temperature in Helsinki is 8.5°C 4 (Moderate) UV index; 5. Weather in Helsinki in November: air temperature, number of sunny days, precipitation, air pressure and humidity. Montly weather forecast in Helsinki on Yandex.Weather. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip. High & Low Weather Summary for May 2018 Temperature Humidity Pressure; High: 84 °F (May 15, 1:50 pm) 100% (May 1, 6:50 pm) 30.51 "Hg (May 1, 6:50 pm) Low: 36 °F (May 6, 4:20 am) 15% (May 28, 5:20 pm) 29.71 "Hg (May 1, 10:50 am) Average: 58 °F: 55%: 30.17 "Hg * Reported May … No heat & humidity; 33. read more Based on weather reports collected during 1985–2015. 17 hours of daylight per day ; 0. May 2018 Weather in Helsinki — Graph °F. ☂ Online precipitation map and other weather maps. The average sunshine in January is 1.2h. Information about regional climates. Weather Helsinki, Finland. Weather Show hourly forecast; Today. Weather forecast in mobile app. Information about regional climates. The climate is rather more than very fresh in this location this month. Guide to Helsinki weather in May. Weather forecast in mobile app. Montly weather forecast in Helsinki on Yandex.Weather. Read an overview of the climate. There has also been a prolonged winter rainy season in Helsinki over the past few years. Get the latest coronavirus (COVID-19) updates for Finland with current travel advice, statistics and online resources.. Below are average maximum temperatures at popular destinations in Finland in May. Information about regional climates. 15:00 2° We 16.12. Low Temp: 19 °F. May and September are two transitional months, during which the night temperatures are usually around freezing, and the only months with a mild weather are the three summer months, from June to August, when it can even get hot during the day. Note : In May, the average maximum UV index of 4 translate into the following recommendations: Take precautions - Protection against sun damage is advised. Information about regional climates. May weather forecast for Helsinki, Finland. Weather warnings issued. Montly weather forecast in Helsinki on Yandex.Weather. 15°C max day temperature; 8. Montly weather forecast in Helsinki on Yandex.Weather. The Helsinki City Marathon is an annual road running event held each year in May. Answer 1 of 3: Hi Guys, I know the average high temperature in May in Helsinki will be 13 degrees celcius. The average maximum temperature lies around 15.0°C (59°F). 8 hours of sunshine per day; 10. 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