Average data for 10 years
1 May
Thursday
+17°
+9°
2 May
Friday
+18°
+8°
3 May
Saturday
+17°
+8°
4 May
Sunday
+17°
+8°
5 May
Monday
+17°
+8°
6 May
Tuesday
+17°
+8°
7 May
Wednesday
+18°
+9°
8 May
Thursday
+19°
+9°
9 May
Friday
+19°
+10°
10 May
Saturday
+19°
+10°
11 May
Sunday
+20°
+10°
12 May
Monday
+18°
+10°
13 May
Tuesday
+18°
+9°
14 May
Wednesday
+18°
+9°
15 May
Thursday
+17°
+9°
16 May
Friday
+18°
+9°
17 May
Saturday
+19°
+10°
18 May
Sunday
+19°
+10°
19 May
Monday
+19°
+10°
20 May
Tuesday
+20°
+10°
21 May
Wednesday
+20°
+11°
22 May
Thursday
+20°
+11°
23 May
Friday
+19°
+10°
24 May
Saturday
+20°
+10°
25 May
Sunday
+20°
+11°
26 May
Monday
+21°
+11°
27 May
Tuesday
+20°
+12°
28 May
Wednesday
+21°
+11°
29 May
Thursday
+21°
+11°
30 May
Friday
+21°
+11°
31 May
Saturday
+20°
+11°
May in Heidelberg is the rainiest month of the year. In May, the weather in Heidelberg is typically warm. Average daily high temperature in May is about 19 degrees above zero. On average, Heidelberg has 13 rainy, 10 partly cloudy, 6 sunny, and 2 cloudy days in May. The rains are usually moderate.