Average data for 10 years
1 September
Sunday
+19°
+13°
2 September
Monday
+17°
+12°
3 September
Tuesday
+17°
+11°
4 September
Wednesday
+18°
+11°
5 September
Thursday
+20°
+12°
6 September
Friday
+20°
+13°
7 September
Saturday
+22°
+13°
8 September
Sunday
+20°
+15°
9 September
Monday
+19°
+12°
10 September
Tuesday
+20°
+14°
11 September
Wednesday
+20°
+13°
12 September
Thursday
+18°
+12°
13 September
Friday
+21°
+13°
14 September
Saturday
+20°
+13°
15 September
Sunday
+21°
+13°
16 September
Monday
+21°
+13°
17 September
Tuesday
+21°
+14°
18 September
Wednesday
+21°
+14°
19 September
Thursday
+21°
+14°
20 September
Friday
+22°
+15°
21 September
Saturday
+18°
+14°
22 September
Sunday
+20°
+12°
23 September
Monday
+23°
+14°
24 September
Tuesday
+22°
+15°
25 September
Wednesday
+21°
+15°
26 September
Thursday
+21°
+14°
27 September
Friday
+21°
+13°
28 September
Saturday
+20°
+13°
29 September
Sunday
+23°
+14°
30 September
Monday
+22°
+14°
Cities with similar weather in September
France
Paris
Australia
Sydney
Mexico
Mexico
Madagascar
Antananarivo
Ethiopia
Addis Ababa
In September, the weather in San Juan is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, San Juan has 30 sunny days in September. September as well as March, April, and October is considered the most comfortable time to visit San Juan.