When to go
Heidelberg · September 2026
Pleasantly warm in Heidelberg: 28° / 19° on average, 8h sun a day.
Tue 1 Sept
23°
Comfortable
Wed 2 Sept
23°
Comfortable
Thu 3 Sept
25°
Comfortable
Fri 4 Sept
29°
Busy
Sat 5 Sept
29°
Comfortable
Sun 6 Sept
29°
Comfortable
Mon 7 Sept
29°
Quiet
Tue 8 Sept
23°
Comfortable
Wed 9 Sept
24°
Comfortable
Thu 10 Sept
29°
Comfortable
Fri 11 Sept
25°
Comfortable
Sat 12 Sept
22°
Comfortable
Sun 13 Sept
21°
Comfortable
Mon 14 Sept
—
Comfortable
Tue 15 Sept
—
Comfortable
Wed 16 Sept
—
Comfortable
Thu 17 Sept
—
Comfortable
Fri 18 Sept
—
Busy
Sat 19 Sept
—
Busy
Sun 20 Sept
—
Busy
Mon 21 Sept
—
Comfortable
Tue 22 Sept
—
Comfortable
Wed 23 Sept
—
Comfortable
Thu 24 Sept
—
Comfortable
Fri 25 Sept
—
Busy
Sat 26 Sept
—
Busy
Sun 27 Sept
—
Busy
Mon 28 Sept
—
Comfortable
Tue 29 Sept
—
Comfortable
Wed 30 Sept
—
Comfortable
Best days for…
Typical month
Temp avg high / low28° / 19°
Rainy days3
Sunshine per day8 h
Sea temp23°
30-year climate normals — actual conditions vary.