Porto Velho vs Rio Branco: which is sunnier?
🇧🇷 Brazil vs 🇧🇷 Brazil · 457 km apart · long-term climate normals (NASA POWER, 2001–2020)
Porto Velho and Rio Branco are virtually tied for annual sunshine — about 2,063 vs 2,057 hours a year. Rio Branco has the higher Sunshine Score in 2 of 12 months; the other 10 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Porto Velho | Rio Branco | |
|---|---|---|
| Sunshine hours / year | 2,063 | 2,057 |
| Sunniest month | July (87/100) | July (86/100) |
| Nov–Feb average score | 63/100 | 63/100 |
| Jun–Aug average score | 82/100 | 82/100 |
| Rain / year | 1,748 mm | 1,669 mm |
| Peak midday UV | 9 (very high) | 9 (very high) |
Porto Velho vs Rio Branco month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Porto Velho | Rio Branco | Porto Velho | Rio Branco | Porto Velho | Rio Branco | |
| January | 63 | 63 | 28° | 28° | 266 | 250 |
| February | 63 | 63 | 28° | 28° | 246 | 247 |
| March | 63 | 63 | 28° | 28° | 232 | 228 |
| April | 63 | 64 | 28° | 28° | 177 | 144 |
| May | 73 | 76 | 28° | 28° | 98 | 78 |
| June | 84 | 85 | 29° | 28° | 35 | 30 |
| July | 87 | 86 | 31° | 30° | 22 | 26 |
| August | 75 | 75 | 33° | 33° | 39 | 43 |
| September | 61 | 62 | 34° | 34° | 79 | 72 |
| October | 57 | 60 | 33° | 33° | 147 | 132 |
| November | 63 | 63 | 31° | 31° | 155 | 194 |
| December | 63 | 63 | 29° | 29° | 252 | 225 |
The sunnier month by month: Jan even · Feb even · Mar even · Apr even · May Rio Branco · Jun even · Jul even · Aug even · Sep even · Oct Rio Branco · Nov even · Dec even.
When to pick which
- November–February: too close to call — Porto Velho averages 63/100, Rio Branco 63/100. Daytime highs are similar (29°C vs 29°C).
- March–May: too close to call — Porto Velho averages 66/100, Rio Branco 68/100. Daytime highs are similar (28°C vs 28°C).
- June–August: too close to call — Porto Velho averages 82/100, Rio Branco 82/100. Daytime highs are similar (31°C vs 30°C).
- September–October: too close to call — Porto Velho averages 59/100, Rio Branco 61/100. Daytime highs are similar (34°C vs 34°C).
Full month-by-month guides: Porto Velho weather by month · Rio Branco weather by month · Best time to visit Brazil.
More comparisons: Porto Velho vs Manaus · Porto Velho vs Puerto Maldonado · Rio Branco vs Cusco · Rio Branco vs Puerto Maldonado · Rio Branco vs Leticia · all head-to-heads