Average data for 10 years
1 September
Sunday
+20°
+16°
2 September
Monday
+19°
+16°
3 September
Tuesday
+19°
+16°
4 September
Wednesday
+19°
+16°
5 September
Thursday
+19°
+16°
6 September
Friday
+20°
+16°
7 September
Saturday
+20°
+16°
8 September
Sunday
+20°
+16°
9 September
Monday
+19°
+16°
10 September
Tuesday
+19°
+16°
11 September
Wednesday
+19°
+16°
12 September
Thursday
+20°
+16°
13 September
Friday
+19°
+16°
14 September
Saturday
+20°
+16°
15 September
Sunday
+20°
+16°
16 September
Monday
+19°
+16°
17 September
Tuesday
+19°
+16°
18 September
Wednesday
+19°
+16°
19 September
Thursday
+20°
+16°
20 September
Friday
+20°
+16°
21 September
Saturday
+19°
+16°
22 September
Sunday
+19°
+16°
23 September
Monday
+19°
+16°
24 September
Tuesday
+19°
+16°
25 September
Wednesday
+19°
+16°
26 September
Thursday
+20°
+16°
27 September
Friday
+19°
+16°
28 September
Saturday
+19°
+16°
29 September
Sunday
+19°
+16°
30 September
Monday
+19°
+16°
Cities with similar weather in September
Peru
Lima
Australia
Brisbane
Kenya
Nairobi
Colombia
Armenia
Brazil
Sao Paulo
In September, the weather in San Jose is typically warm. Average daily high temperature in September is about 19 degrees above zero. On average, San Jose has 30 rainy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit San Jose.