S
M
T
W
T
F
S
31
63°
57°
1
61°
57°
2
64°
55°
3
N/A
4
62°
49°
5
61°
52°
6
62°
56°
7
63°
52°
8
61°
50°
9
61°
55°
10
61°
53°
11
64°
52°
12
66°
54°
13
65°
53°
14
66°
54°
15
65°
52°
16
62°
54°
17
69°
56°
18
68°
55°
19
63°
55°
20
63°
54°
21
66°
54°
22
68°
55°
23
68°
55°
24
69°
56°
25
68°
56°
26
69°
55°
27
69°
56°
28
68°
56°
29
70°
55°
30
70°
57°
1
69°
55°
2
70°
56°
3
69°
57°
4
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Llanelli
Llanelli's June 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 49° and 57°. The average high for June is 66° with an average low of 54°. 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.