Are you considering a trip to Helsinki in May? Well, the weather is usually on your side with an average maximum temperature of +54°F and about 12 sunny days. Just keep in mind that there may be some rain, with an average of 11 rainy days and 42 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Good to know:
May is usually the driest month of the year in Helsinki
Average weather
☀️
+54°F
Avg. max. temperature
+28°F
Min.
+79°F
Max.
42 mm
Total precipitation
68%
Avg. humidity
4 m/s
Avg. wind
12 ☀️
Sunny Days
7 ⛅️
Cloudy
11 🌦
Rainy
Our opinion: Helsinki has good weather in May.
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Average temperature in Helsinki in May
Here are the expected maximum, average and minimum temperatures in Helsinki for May based on the historical data.
Last Year
Historical Data
The temperature in May is +59°F on average, with a range between a maximum of +72°F during the day and a minimum of +30°F at night.
The average maximum temperature goes up 35% by the end of the month, compared with the beginning of the month, from +50°F to +64°F.
Is Helsinki warm or cold in May?
Helsinki is typically mild in May.
Maximum temperatures go up compared to the previous month from +43°F to +54°F. The minimum temperature also goes up from +32°F to +41°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Helsinki:
Water temperature in Helsinki in May
Water in Helsinki in May is Cold. It varies from +29°F to +47°F, with an average of +38°F.The air temperature averaging +54°F is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Helsinki are reached in August, when the average sea temperature rises to +55°F. The coldest water temperatures are in February, with an average of +31°F.
Can you swim in Helsinki in May?
We would not recommend swimming in Helsinki in May, the water is very cold (+38°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Climate in Helsinki in May
Helsinki weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+43°F
+54°F
+61°F
Min. temperature
+14°F
+28°F
+36°F
Max. temperature
+66°F
+79°F
+88°F
Rainfall
24 mm
42 mm
58 mm
Wind
4 m/s
4 m/s
3 m/s
Avg. water temperature
+33°F
+38°F
+48°F
Humidity
72%
68%
72%
Air pressure
1012 HPa
1013 HPa
1011 HPa
Sunny days
9
12
10
Cloudy days
9
7
7
Rainy days
7
11
12
Snowy days
5
0
0
May weather is still as good as in April.It’s getting warmer as May arrives. The average maximum temperature goes up from +43°F to +54°F during the day.Prepare for more rain. Average rainfall goes from 24 mm to 42 mm.It feels drier, as humidity decreases from 72% to 68%.The average wind speed doesn’t change much during May, staying around 4 m/s.The good news is there are likely to be more sunny days in May, from 9 to 12.
June brings much the same weather, it remains good.
Wind speed in Helsinki in May based on historical data.
Last Year
Historical Data
The average wind speed is 5 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Helsinki is gradually increasing during May, going from 5 m/s to 7 m/s over the course of the month.
Rain
Amount of rainfall in mm during May in Helsinki based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in May stands at 45%, leading to total precipitation of around 41 mm. The maximum amount of rainfall per day is around 9 mm, which is considered light rain.May is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Helsinki wettest month is October, where a typical day has a 55% chance of precipitation and 83 mm of rainfall per day. February, on the other hand, is the driest month with a mere 3% chance of precipitation and 10 mm of rainfall per day.
How was the weather last May in Helsinki?
This is the weather in Helsinki in May 2023:
1 May
☀️
+50°F
2 May
🌧️
+44°F
3 May
☀️
+51°F
4 May
☀️
+44°F
5 May
☀️
+41°F
6 May
☀️
+46°F
7 May
☀️
+50°F
8 May
☀️
+55°F
9 May
☀️
+58°F
10 May
☀️
+62°F
11 May
☀️
+64°F
12 May
☀️
+68°F
13 May
☀️
+69°F
14 May
☀️
+70°F
15 May
☀️
+69°F
16 May
🌧️
+57°F
17 May
☁️
+56°F
18 May
☁️
+55°F
19 May
☀️
+60°F
20 May
☀️
+64°F
21 May
☀️
+68°F
22 May
☀️
+69°F
23 May
☀️
+68°F
24 May
☀️
+71°F
25 May
☀️
+65°F
26 May
☀️
+56°F
27 May
☀️
+59°F
28 May
☀️
+60°F
29 May
☀️
+59°F
30 May
☀️
+59°F
31 May
☀️
+64°F
In May 2023 Helsinki had 27 sunny days, 2 cloudy days, and 2 rainy days. The average maximum temperature was +59°F, with an absolute maximum of +72°F and a minimum of +41°F. The average humidity was 63%, with a maximum of 100% and a minimum of 26%. The average wind speed was 5 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in May?
Climate Change Over the Years
This is how Helsinki climate has changed over the last 43 years.
The climate in Helsinki in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1987 (+41°F) and the highest in 2020 (+52°F). The driest year was 2002 with only 248 mm of rainfall, and the wettest year was 2020 with 1153 mm.
FAQ
Frequently asked questions about the weather in Helsinki in May:
Is May a good time to visit Helsinki?
May is a really good time to go to Helsinki. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Helsinki.
Can you sunbathe in Helsinki in May?
May has mild temperatures in Helsinki. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Helsinki in May?
Swimming in Helsinki in May is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Helsinki rainy in May?
Helsinki is usually dry in May. Plan your packing around outdoor activities and exploring.
Is it sunny in Helsinki in May?
The amount of sunny days in Helsinki during May varies; prepare for a mix of clouds and sun.
Other cities in Finland
Check out the weather for other cities in Finland.
For this page, we’ve looked at the typical weather in Helsinki, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
