S
M
T
W
T
F
S
29
88°
72°
30
89°
73°
31
88°
73°
1
87°
74°
2
93°
72°
3
89°
74°
4
88°
73°
5
88°
71°
6
91°
72°
7
89°
72°
8
91°
73°
9
89°
73°
10
89°
74°
11
89°
72°
12
91°
73°
13
90°
73°
14
90°
75°
15
93°
75°
16
89°
71°
17
N/A
18
97°
71°
19
96°
71°
20
93°
70°
21
94°
70°
22
96°
70°
23
99°
73°
24
92°
71°
25
91°
71°
26
92°
72°
27
91°
74°
28
91°
73°
29
92°
75°
30
89°
75°
1
89°
76°
2
90°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in San Juan
San Juan's April 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 70° and 76°. The average high for April is 93° with an average low of 73°. 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 San Juan. See also: May | June | July.
