S
M
T
W
T
F
S
31
63°
57°
1
61°
57°
2
64°
55°
3
63°
55°
4
63°
55°
5
61°
52°
6
63°
54°
7
59°
57°
8
61°
52°
9
61°
54°
10
61°
52°
11
61°
54°
12
61°
55°
13
63°
50°
14
68°
48°
15
68°
59°
16
63°
57°
17
63°
57°
18
64°
59°
19
71°
58°
20
68°
54°
21
77°
62°
22
80°
63°
23
77°
62°
24
78°
64°
25
83°
66°
26
81°
65°
27
73°
61°
28
71°
59°
29
71°
57°
30
70°
56°
1
69°
57°
2
63°
52°
3
64°
51°
4
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Llanelli
Llanelli's June 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 51° and 66°. The average high for June is 72° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Llanelli. See also: July | August | September.