The temperatures in Santarem in September are comfortable with low of 15°C and and high up to 29°C.
You can expect about 3 to 8 days of rain in Santarem during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Santarem in September 2025.
If you’re planning to visit Santarem in the near future, we highly recommend that you review the 14 day weather forecast for Santarem before you arrive.
Temperatures
29° / 15°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
61
mm
Sun Hours
11.0
Hrs
