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Finland weather

Weather in Helsinki for May 2026

Your guide to Helsinki weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Helsinki at the beginning of May is 8.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 15.4 °C by the end of May.

    • Rain 🌧️

  • Helsinki in May brings notable rainfall, with an average of 19 rainy days and a total precipitation of 53 mm.

Average dry days
12
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
12°/5°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
68 %
Avg humidity

Helsinki Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
8°
2
Overcast
9°
3
Partly cloudy
8°
4
Patchy rain possible
9°
5
Patchy rain possible
7°
6
Moderate or heavy rain shower
8°
7
Heavy rain at times
8°
8
Moderate rain at times
9°
9
Patchy rain possible
10°
10
Overcast
12°
11
Sunny
14°
12
Sunny
15°
13
Overcast
15°
14
Patchy rain possible
15°
15
Sunny
14°
16
Sunny
14°
17
Overcast
14°
18
Moderate or heavy rain shower
15°
19
Sunny
15°
20
Sunny
15°
21
Moderate or heavy rain shower
14°
22
Overcast
14°
23
Patchy rain possible
15°
24
Sunny
16°
25
Partly cloudy
16°
26
Moderate or heavy rain shower
14°
27
Moderate or heavy rain shower
15°
28
Overcast
15°
29
Sunny
16°
30
Partly cloudy
16°
31
Overcast
16°

Temperatures trend during May in Helsinki

See the weather trend as well as the moving average line

May weather in Helsinki day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 8° /1° 0.4 mm 3
2 May Overcast
Overcast
 9° /2° 5 mm 3
3 May Partly cloudy
Partly cloudy
 8° /2° 0.4 mm 2
4 May Patchy rain possible
Patchy rain possible
 9° /1° 0.6 mm 2
5 May Patchy rain possible
Patchy rain possible
 7° /0° 1.5 mm 2
6 May Moderate or heavy rain shower
Moderate or heavy rain shower
 8° /1° 3 mm 2
7 May Heavy rain at times
Heavy rain at times
 8° /1° 1.1 mm 2
8 May Moderate rain at times
Moderate rain at times
 9° /1° 0.7 mm 3
9 May Patchy rain possible
Patchy rain possible
 10° /1° 0.5 mm 3
10 May Overcast
Overcast
 12° /3° 1.8 mm 3
11 May Sunny
Sunny
 14° /5° 1.1 mm 4
12 May Sunny
Sunny
 15° /5° 0.3 mm 4
13 May Overcast
Overcast
 15° /6° 0.4 mm 4
14 May Patchy rain possible
Patchy rain possible
 15° /7° 0.1 mm 4
15 May Sunny
Sunny
 14° /7° 0.8 mm 4
16 May Sunny
Sunny
 14° /7° 1.7 mm 4
17 May Overcast
Overcast
 14° /6° 1.9 mm 3
18 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /6° 2.3 mm 4
19 May Sunny
Sunny
 15° /7° 2 mm 4
20 May Sunny
Sunny
 15° /7° 1.1 mm 4
21 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /5° 3.7 mm 4
22 May Overcast
Overcast
 14° /7° 0.8 mm 4
23 May Patchy rain possible
Patchy rain possible
 15° /7° 1.4 mm 4
24 May Sunny
Sunny
 16° /7° 0 mm 4
25 May Partly cloudy
Partly cloudy
 16° /8° 2.7 mm 4
26 May Moderate or heavy rain shower
Moderate or heavy rain shower
 14° /7° 8.4 mm 3
27 May Moderate or heavy rain shower
Moderate or heavy rain shower
 15° /7° 3.1 mm 4
28 May Overcast
Overcast
 15° /7° 1.8 mm 4
29 May Sunny
Sunny
 16° /8° 0.6 mm 4
30 May Partly cloudy
Partly cloudy
 16° /8° 0.9 mm 4
31 May Overcast
Overcast
 16° /8° 2.9 mm 4
Next
Important Notice
Our weather forecast for Helsinki in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Helsinki forecast closer to your planned date for the most up-to-date weather information.
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Helsinki in May - FAQ

What are the expected maximum and minimum temperatures in Helsinki during May?
During May, expect a variety of temperatures with highs around 12° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Helsinki during May?
Moderate rainfall is anticipated in Helsinki during May, with a total of 53 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
Will it snow in Helsinki in May 2026?
Helsinki typically sees 0.05 cm of snowfall during May.
What are the typical wind conditions in Helsinki during May?
The average wind speed in Helsinki during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Helsinki

Explore the daily rainfall trends and prepare for Helsinkis May weather 💧
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Get accurate weather forecasts for Helsinki, located at latitude 60.17 and longitude 24.935. Stay updated with localized weather information tailored for Helsinki.

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