S
M
T
W
T
F
S
29
55°
43°
30
57°
41°
31
57°
41°
1
57°
48°
2
57°
46°
3
57°
41°
4
77°
39°
5
66°
43°
6
86°
48°
7
86°
50°
8
82°
50°
9
72°
45°
10
77°
55°
11
61°
48°
12
54°
41°
13
59°
39°
14
63°
39°
15
66°
48°
16
73°
45°
17
72°
48°
18
68°
52°
19
77°
55°
20
75°
50°
21
82°
52°
22
68°
54°
23
81°
55°
24
75°
50°
25
65°
55°
26
69°
56°
27
73°
59°
28
74°
56°
29
74°
58°
30
74°
58°
1
70°
59°
2
70°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Arcachon
Arcachon's April 2026 forecast shows daily high temperatures ranging from 65° to 74°, with overnight lows between 55° and 59°. The average high for April is 71° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Arcachon. See also: May | June | July.