Nature — Santarém
Climate — Santarém: monthly averages
| Month | Day (max) | Night (min) | Monthly precipitation |
|---|---|---|---|
| January | 21°C | -5°C | 68 mm |
| February | 24°C | -4°C | 54 mm |
| March | 28°C | -3°C | 65 mm |
| April | 31°C | 3°C | 57 mm |
| May | 37°C | 6°C | 37 mm |
| June | 40°C | 9°C | 15 mm |
| July | 41°C | 12°C | 5 mm |
| August | 44°C | 12°C | 7 mm |
| September | 42°C | 11°C | 30 mm |
| October | 35°C | 5°C | 84 mm |
| November | 26°C | 0°C | 90 mm |
| December | 21°C | -4°C | 65 mm |
Long-term model averages for an area of about 50 km — not a forecast; mountains are often cooler. Source: NASA POWER Project (CC BY 4.0) (2001–2025)