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South Ostrobothnia (Lappajärvi)
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Weather in South Ostrobothnia for May 2026

Your guide to South Ostrobothnia weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in South Ostrobothnia at the beginning of May is 9.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.7 °C by the end of May.

    • Rain 🌧️

  • With an average of 5 rainy days, South Ostrobothnia experiences minimal rainfall in May.

Average dry days
26
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/6°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
62 %
Avg humidity

South Ostrobothnia Weather May

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

Temperatures trend during May in South Ostrobothnia

See the weather trend as well as the moving average line

May weather in South Ostrobothnia day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
1 May Overcast
Overcast
 12° /-1° 0 mm 0 cm
2 May Overcast
Overcast
 15° /2° 2.2 mm 0 cm
3 May Overcast
Overcast
 11° /2° 4 mm 0.2 cm
4 May Overcast
Overcast
 8° /1° 0 mm 0 cm
5 May Partly cloudy
Partly cloudy
 8° /-1° 0 mm 0 cm
6 May Partly cloudy
Partly cloudy
 6° /-1° 0.2 mm 0 cm
7 May Overcast
Overcast
 5° /-2° 0 mm 0 cm
8 May Sunny
Sunny
 8° /-3° 0 mm 0 cm
9 May Overcast
Overcast
 10° /-2° 1.1 mm 0 cm
10 May Patchy rain possible
Patchy rain possible
 10° /0° 0.2 mm 0 cm
11 May Sunny
Sunny
 12° /0° 0 mm 0 cm
12 May Moderate rain at times
Moderate rain at times
 13° /1° 0.9 mm 0 cm
13 May Cloudy
Cloudy
 17° /4° 0.1 mm 0 cm
14 May Cloudy
Cloudy
 16° /5° 0 mm 0 cm
15 May Sunny
Sunny
 17° /7° 0 mm 0 cm
16 May Sunny
Sunny
 19° /6° 0 mm 0 cm
17 May Sunny
Sunny
 21° /7° 0 mm 0 cm
18 May Overcast
Overcast
 19° /8° 0 mm 0 cm
19 May Cloudy
Cloudy
 20° /6° 0.1 mm 0 cm
20 May Overcast
Overcast
 13° /3° 0 mm 0 cm
21 May Partly cloudy
Partly cloudy
 14° /1° 0 mm 0 cm
22 May Partly cloudy
Partly cloudy
 17° /4° 1.9 mm 0 cm
23 May Sunny
Sunny
 18° /6° 3.7 mm 0 cm
24 May Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /7° 3 mm 0 cm
25 May Patchy rain possible
Patchy rain possible
 20° /8° 0.1 mm 0 cm
26 May Overcast
Overcast
 22° /9° 0.2 mm 0 cm
27 May Patchy rain possible
Patchy rain possible
 21° /11° 0.1 mm 0 cm
28 May Cloudy
Cloudy
 21° /11° 0.5 mm 0 cm
29 May Overcast
Overcast
 21° /9° 0.3 mm 0 cm
30 May Patchy rain possible
Patchy rain possible
 22° /9° 2.3 mm 0 cm
31 May Thundery outbreaks possible
Thundery outbreaks possible
 18° /10° 1.4 mm 0 cm
Next
Important Notice
Our weather forecast for South Ostrobothnia 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 South Ostrobothnia forecast closer to your planned date for the most up-to-date weather information.
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South Ostrobothnia in May - FAQ

What are the expected maximum and minimum temperatures in South Ostrobothnia during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Ostrobothnia during May?
Expect minimal rainfall in South Ostrobothnia during May, with a total of 13.1 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in South Ostrobothnia during May?
The average wind speed in South Ostrobothnia during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

South Ostrobothnia snow forecast May 2026

Track daily snowfall levels and discover South Ostrobothnia’s snowy potential this May ❄️

May rainfall patterns in South Ostrobothnia

Explore the daily rainfall trends and prepare for South Ostrobothnias May weather 💧

UV exposure in South Ostrobothnia during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Provinces in South Ostrobothnia
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Järviseutu
Top locations in South Ostrobothnia
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Lappajärvi
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Location coordinates Where is South Ostrobothnia?

Get accurate weather forecasts for South Ostrobothnia, located at latitude 63.2 and longitude 23.633. Stay updated with localized weather information tailored for South Ostrobothnia.

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