Helsinki in may: average Weather, Temperature and Climate
Weather in Helsinki in may 2025
The weather in Helsinki in may comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout may
tolerable weather 18.3cm
Weather at 6am
50°F
Clear/Sunny
42% of time
28%
15%
10%
Weather at 12pm
56°F
Clear/Sunny
42% of time
23%
20%
10%
Weather at 6pm
52°F
Clear/Sunny
44% of time
27%
13%
12%
Weather at 3am
47°F
38%
30%
13%
9%
Evolution of daily average temperature and precipitation in Helsinki in may
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Helsinki in may.
The climate of Helsinki in may is tolerable
The climate in may in Helsinki is wet (with 2.6in of rainfall over 4 days). The weather is worst than the previous month since in april there is an average of 2.2in of precipitation over 3 days.
The climate is relatively fresh in this location may, but it is livable by dressing warm. The high seasonal norm is 56°F. The minimum is 50°F. Thus, the mean temperature average in may in Helsinki is 52°F. Note that these seasonal averages are in contrast with those observed in Helsinki in may with a maximum record of 79°F in 2009 and a minimum record of 34°F in 2019. You can plan to have about 3 days with temperatures up to 65°F, or 10% of the month.
Day length in Helsinki in may is 17:13. Sunrise is at 03:41 and sunset is at 20:54.
With a correct climate, may is okay (but not the best) to go there.
Helsinki: another month?
If you can push back the dates of your trip, we advise you to go in june to Helsinki. more information
May: another location in Finland?
If you want to go to Finland in may, there are destinations with better weather than Helsinki:
In may, Tampere, Hämeenlinna, Heinola, Lahti, Mäntsälä and Riihimäki have good weather.
Seasonal average climate and temperature of Helsinki in may
Check below seasonal norms These datas are generated from the weather statements earlier years of the month of may.
| May | |||||
| Outside temperature | |||||
| Average temperature | 52°F | ||||
| Highest temperature | 56°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 79°F (2009) | ||||
| Lowest record temperature | 34°F (2019) | ||||
| Number of days at +65°F | 3 day(s) (10%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 45°F | ||||
| Lowest sea temperature | 35°F | ||||
| Highest sea temperature | 54°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 47°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.6in | ||||
| Number of days with rainfall | 4 day(s) (13%) | ||||
| Record daily rainfall | 1.2in (2021) | ||||
| Snowfall | 18.3cm | ||||
| Other climate data | |||||
| Humidity | 76% | ||||
| Visibility | 9.37km | ||||
| Cloud cover | 40% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 15 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 03:41 | ||||
| Time of sunset | 20:54 | ||||
| Length of day | 17:13 | ||||
| Our opinion about the weather in may | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last may?
Here is the day by day recorded weather in Helsinki in may 2024:
43°F to 56°F
45°F to 54°F
45°F to 50°F
47°F to 61°F
43°F to 50°F
40°F to 45°F
38°F to 49°F
32°F to 45°F
36°F to 49°F
41°F to 54°F
40°F to 56°F
40°F to 56°F
47°F to 58°F
52°F to 63°F
52°F to 67°F
54°F to 68°F
54°F to 70°F
54°F to 65°F
56°F to 68°F
54°F to 65°F
50°F to 63°F
52°F to 61°F
54°F to 67°F
56°F to 72°F
58°F to 72°F
61°F to 70°F
58°F to 72°F
59°F to 74°F
59°F to 70°F
59°F to 70°F
61°F to 74°F
Map: other cities in Finland in may
Cities near Helsinki:
| Vantaa in may | tolerable weather |
| Kirkkonummi in may | tolerable weather |
| Porvoo in may | tolerable weather |
| Lohja in may | tolerable weather |
| Ingå in may | bad weather |
| Mäntsälä in may | good weather |
| Riihimäki in may | good weather |
| Ekenäs in may | bad weather |
| Hämeenlinna in may | good weather |
| Lahti in may | good weather |
| Forssa in may | tolerable weather |
| Salo in may | tolerable weather |
Click over cities on the map for information about the weather in may.
Helsinki
perfect weather
good
tolerable
bad
very bad
Weather data for Helsinki in may:
Weather data for Helsinki for may are derived from an average of the weather forecast since 2009 in Helsinki. There is a margin of error and these forecasts are to be considered as general information only. The weather in Helsinki can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Helsinki.