Average data for 10 years
1 September
Monday
+30°
+26°
2 September
Tuesday
+30°
+26°
3 September
Wednesday
+30°
+26°
4 September
Thursday
+30°
+26°
5 September
Friday
+30°
+26°
6 September
Saturday
+30°
+26°
7 September
Sunday
+30°
+26°
8 September
Monday
+30°
+26°
9 September
Tuesday
+30°
+26°
10 September
Wednesday
+30°
+26°
11 September
Thursday
+30°
+26°
12 September
Friday
+30°
+26°
13 September
Saturday
+30°
+26°
14 September
Sunday
+30°
+26°
15 September
Monday
+30°
+26°
16 September
Tuesday
+30°
+26°
17 September
Wednesday
+30°
+26°
18 September
Thursday
+30°
+26°
19 September
Friday
+30°
+25°
20 September
Saturday
+29°
+25°
21 September
Sunday
+29°
+25°
22 September
Monday
+30°
+25°
23 September
Tuesday
+30°
+25°
24 September
Wednesday
+30°
+26°
25 September
Thursday
+30°
+26°
26 September
Friday
+30°
+26°
27 September
Saturday
+29°
+25°
28 September
Sunday
+30°
+25°
29 September
Monday
+30°
+25°
30 September
Tuesday
+30°
+25°
Cities near you
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Boca Chica
The United States Virgin Islands
Charlotte Amalie
Anguilla
The Valley
Cities with similar weather in September
Thailand
Pattaya
Vietnam
Nha Trang
Thailand
Bangkok
Dominican Republic
Santo Domingo
Cuba
Varadero
September in San Juan is the rainiest and the cloudiest month of the year. In September, the weather in San Juan is typically hot. Average daily high temperature in September is about 30 degrees above zero. On average, San Juan has 23 rainy, 4 partly cloudy, and 3 sunny days in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit San Juan.