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FinlandThe weather in May in Helsinki
It's cool to moderate in May in Helsinki with an average temperature of 15°C. Temperatures this month range from a low of 9°C to a high of 19°C. At night, you can expect temperatures between 2°C and 10°C.
Looking for sun and warm weather? May isn’t a good month to be in Helsinki. The temperatures are too low for a warm stay this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Helsinki, Finland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Precipitation and snowfall
In May, there is an average of 83 mm of precipitation, spread over 12 days. Of the total precipitation, about 0,4 cm falls as snow in May. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in May for Helsinki
Click on any day in May to get detailed info about the usual weather on that day in Helsinki. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Helsinki | New York | |
|---|---|---|
| Average temperature | 15°C | 22°C |
| Max. temperature | 19°C | 28°C |
| Min. temperature | 2°C | -5°C |
| Total precipitation | 83 mm | 105 mm |
| Rainy days | 12 days | 14 days |
| Total snowfall | 0,4 cm | 0 cm |
| Snowy days | 1 day | 0 days |
Start of May
The month of May starts in Helsinki with cool temps, averaging around 12°C during the day and nights around 3°C.
Mid May
By mid-May, daytime temps rise to around 16°C, with nights around 7°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Helsinki is around 17°C, while nighttime temps are about 9°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Helsinki for all months and discover the best travel time
Curious about the weather in other parts of Finland? Check out the climate and weather for spots like Rovaniemi, Kuusamo, Tampere, or explore other destinations in Finland.
Temperature charts
These charts show the average temperatures in May in Helsinki, Finland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Helsinki
Temperature in May in Helsinki over the years
Precipitation charts
These charts show the average amount of precipitation in May in Helsinki, Finland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Helsinki
Total precipitation in May in Helsinki over the years
Daily Snowfall in May in Helsinki
Snowfall in May in Helsinki per year
Daily UV index in May in Helsinki
This chart shows the average daily UV index in May in Helsinki, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Helsinki
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Average weather in Helsinki by month
Click on a month below to see detailed weather info for Helsinki. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.