Brazil
Altamira sees feels-like daytime highs peak around 42.1°C in August and nighttime lows bottom out near 27.9°C in August. March is the wettest month (~328 mm), while August is the driest (~25 mm). For sunshine, July leads with about 56% clear skies.
Based on mild feels-like temperatures and low rain chances, the most comfortable months are September, October, and August — expect around 28.1–40.8°C with roughly 16% chance of rain on a given day in September.
| Month | Low / High °C | Rain % | Rainfall | Clear skies | Wind |
|---|---|---|---|---|---|
| January | 29.9° / 38.6° | 71% | 225 mm | 22% | 3.6 kph |
| February | 30.1° / 38.6° | 78% | 276 mm | 22% | 3.5 kph |
| March | 30.3° / 39.1° | 87% | 328 mm | 19% | 3.4 kph |
| April | 31.6° / 40.6° | 82% | 291 mm | 19% | 3.3 kph |
| May | 30.8° / 40.7° | 62% | 182 mm | 27% | 3.4 kph |
| June | 29.4° / 40.5° | 38% | 82 mm | 45% | 3.6 kph |
| July | 29.2° / 41.5° | 25% | 44 mm | 56% | 3.9 kph |
| August☀ | 27.9° / 42.1° | 16% | 25 mm | 56% | 4 kph |
| September☀ | 28.1° / 40.8° | 16% | 26 mm | 45% | 4 kph |
| October☀ | 28.7° / 40.3° | 21% | 44 mm | 33% | 4 kph |
| November | 29.5° / 41.3° | 27% | 64 mm | 24% | 3.9 kph |
| December | 30.1° / 41° | 47% | 129 mm | 21% | 3.7 kph |
Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).
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