Cusco vs Rio Branco: which is sunnier?
🇵🇪 Peru vs 🇧🇷 Brazil · 600 km apart · long-term climate normals (NASA POWER, 2001–2020)
Cusco is the sunnier overall: about 2,286 hours of sunshine a year to Rio Branco's 2,057. Rio Branco has the higher Sunshine Score in 9 of 12 months, Cusco in 3.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Cusco | Rio Branco | |
|---|---|---|
| Sunshine hours / year | 2,286 | 2,057 |
| Sunniest month | September (74/100) | July (86/100) |
| Nov–Feb average score | 53/100 | 63/100 |
| Jun–Aug average score | 63/100 | 82/100 |
| Rain / year | 718 mm | 1,669 mm |
| Peak midday UV | 11 (extreme) | 9 (very high) |
Cusco vs Rio Branco month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Cusco | Rio Branco | Cusco | Rio Branco | Cusco | Rio Branco | |
| January | 51 | 63 | 17° | 28° | 129 | 250 |
| February | 46 | 63 | 16° | 28° | 127 | 247 |
| March | 50 | 63 | 16° | 28° | 96 | 228 |
| April | 56 | 64 | 16° | 28° | 44 | 144 |
| May | 60 | 76 | 16° | 28° | 9 | 78 |
| June | 61 | 85 | 16° | 28° | 4 | 30 |
| July | 60 | 86 | 16° | 30° | 11 | 26 |
| August | 68 | 75 | 17° | 33° | 8 | 43 |
| September | 74 | 62 | 18° | 34° | 18 | 72 |
| October | 67 | 60 | 18° | 33° | 63 | 132 |
| November | 66 | 63 | 18° | 31° | 72 | 194 |
| December | 50 | 63 | 17° | 29° | 137 | 225 |
The sunnier month by month: Jan Rio Branco · Feb Rio Branco · Mar Rio Branco · Apr Rio Branco · May Rio Branco · Jun Rio Branco · Jul Rio Branco · Aug Rio Branco · Sep Cusco · Oct Cusco · Nov Cusco · Dec Rio Branco.
When to pick which
- November–February: Rio Branco (average score 63/100 vs 53). Rio Branco is the warmer, around 29°C daytime highs vs 17°C.
- March–May: Rio Branco (average score 68/100 vs 55). Rio Branco is the warmer, around 28°C daytime highs vs 16°C.
- June–August: Rio Branco (average score 82/100 vs 63). Rio Branco is the warmer, around 30°C daytime highs vs 16°C.
- September–October: Cusco (average score 71/100 vs 61). Rio Branco is the warmer, around 34°C daytime highs vs 18°C.
Full month-by-month guides: Cusco weather by month · Rio Branco weather by month · Best time to visit Peru · Best time to visit Brazil.
More comparisons: Cusco vs Juliaca · Cusco vs Ayacucho · Cusco vs Puerto Maldonado · Rio Branco vs Porto Velho · Rio Branco vs Puerto Maldonado · Rio Branco vs Leticia · all head-to-heads