S
M
T
W
T
F
S
26
70°
54°
27
75°
55°
28
75°
59°
29
66°
61°
30
66°
57°
1
66°
54°
2
66°
54°
3
63°
55°
4
63°
54°
5
63°
52°
6
63°
48°
7
63°
48°
8
64°
54°
9
64°
55°
10
63°
54°
11
64°
55°
12
66°
55°
13
68°
48°
14
76°
43°
15
71°
44°
16
76°
45°
17
76°
47°
18
79°
47°
19
80°
52°
20
85°
58°
21
89°
60°
22
86°
56°
23
83°
53°
24
84°
54°
25
83°
55°
26
70°
48°
27
72°
48°
28
74°
49°
29
74°
50°
30
77°
51°
31
78°
54°
1
78°
55°
2
79°
56°
3
79°
54°
4
78°
54°
5
77°
51°
6
73°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Riba Douro
Riba Douro's May 2026 forecast shows daily high temperatures ranging from 68° to 89°, with overnight lows between 43° and 60°. The average high for May is 78° with an average low of 51°. 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 Riba Douro. See also: June | July | August.
