Best time to visit Porto Velho, Brazil
Based on 2020–2024 of daily weather data, the best months to visit Porto Velho are July, June, August — when temperatures are comfortable, rainfall is low, and sunshine is plentiful.
Months ranked by travel comfort
| Rank | Month | High | Low | Precip | Rainy days | Sun | Score |
|---|---|---|---|---|---|---|---|
| 1 ★ | July | 32.8° | 21.8° | 36.5 mm | 30 | 11 h | 91 |
| 2 ★ | June | 30.9° | 22.3° | 195.4 mm | 65 | 10.7 h | 87 |
| 3 ★ | August | 33.7° | 22.5° | 175.1 mm | 48 | 10.5 h | 84 |
| 4 | September | 34.2° | 23.9° | 258.4 mm | 81 | 10.2 h | 77 |
| 5 | May | 30° | 23° | 601.1 mm | 121 | 10.1 h | 74 |
| 6 | October | 33.6° | 24.2° | 584.2 mm | 117 | 10.1 h | 67 |
| 7 | April | 29.6° | 23.6° | 1284.7 mm | 146 | 8.7 h | 59 |
| 8 | January | 29.8° | 23.5° | 1512.7 mm | 153 | 8.3 h | 58 |
| 9 | March | 29.3° | 23.6° | 1678.4 mm | 151 | 7.6 h | 58 |
| 10 | December | 30.7° | 23.8° | 1267.9 mm | 151 | 8.9 h | 58 |
| 11 | February | 29.4° | 23.5° | 1531.8 mm | 142 | 7.4 h | 57 |
| 12 | November | 31.9° | 23.9° | 1031.8 mm | 134 | 9.3 h | 56 |
Score (0–100) blends ideal-temperature comfort (50%), low-rainfall (30%), and sunshine (20%). Higher is better for a typical sightseeing trip.
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