S
M
T
W
T
F
S
26
44°
34°
27
43°
32°
28
47°
32°
29
46°
35°
30
48°
37°
1
54°
34°
2
55°
35°
3
56°
36°
4
52°
35°
5
53°
36°
6
58°
35°
7
47°
34°
8
47°
35°
9
49°
40°
10
49°
40°
11
54°
43°
12
58°
42°
13
51°
40°
14
51°
37°
15
57°
40°
16
57°
45°
17
63°
39°
18
57°
37°
19
51°
35°
20
54°
41°
21
55°
46°
22
57°
46°
23
62°
50°
24
68°
49°
25
66°
45°
26
57°
40°
27
56°
40°
28
57°
44°
29
59°
47°
30
58°
45°
31
61°
46°
1
65°
47°
2
67°
41°
3
62°
43°
4
65°
42°
5
63°
39°
6
64°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Finland
Finland's May 2026 forecast shows daily high temperatures ranging from 43° to 68°, with overnight lows between 32° and 50°. The average high for May is 56° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Finland. See also: June | July | August.
