Rio Branco weather by month & the best time to visit
Brazil · city break · tropical — wet & dry seasons climate

The best time to visit Rio Branco is July — its sunniest month (Sunshine Score 86/100), with June and May close behind. Rio Branco averages about 2,057 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 26 mm of rain in July.
When is the best time to visit Rio Branco?
For sunshine, the best time to visit Rio Branco is July, then June and May. The dullest month is October (60/100, 132 mm of rain). The full month-by-month picture is in the table below.
How sunny is Rio Branco?
Rio Branco gets a moderate 2,057 hours of sunshine a year. July (86/100) is noticeably better than October (60). It ranks #116 of 131 destinations in Brazil for annual sunshine, below the national median of 2,486 hours. Rain has a clear season: the wettest stretch, around February, carries about 43% of the annual 1,669 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 63 | 28° / 82°F | 23° / 73°F | 250 mm | 9 |
| February | 63 | 28° / 82°F | 22° / 72°F | 247 mm | 9 |
| March | 63 | 28° / 82°F | 22° / 72°F | 228 mm | 9 |
| April | 64 | 28° / 82°F | 22° / 72°F | 144 mm | 9 |
| May | 76 | 28° / 82°F | 21° / 70°F | 78 mm | 8 |
| June | 85 | 28° / 82°F | 20° / 68°F | 30 mm | 8 |
| July | 86 | 30° / 86°F | 20° / 68°F | 26 mm | 8 |
| August | 75 | 33° / 91°F | 21° / 70°F | 43 mm | 8 |
| September | 62 | 34° / 93°F | 22° / 72°F | 72 mm | 8 |
| October | 60 | 33° / 91°F | 23° / 73°F | 132 mm | 9 |
| November | 63 | 31° / 88°F | 23° / 73°F | 194 mm | 9 |
| December | 63 | 29° / 84°F | 23° / 73°F | 225 mm | 8 |
Nearest destinations
Head-to-head
How Rio Branco compares month by month: Rio Branco vs Porto Velho · Rio Branco vs Cusco · Rio Branco vs Puerto Maldonado · Rio Branco vs Leticia · all comparisons
Rio Branco: questions and answers
What kind of destination is Rio Branco?
Rio Branco is a city break in Brazil with a tropical — wet & dry seasons climate.
How many hours of sunshine does Rio Branco get a year?
Rio Branco gets about 2,057 hours of sunshine a year, at its best around July.
When is the best time to visit Rio Branco?
The sunniest time to visit Rio Branco is July, when the Sunshine Score peaks at 86/100 (with June and May close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Rio Branco?
October is the least sunny month in Rio Branco, scoring 60/100 with about 132 mm of rain.
How strong is the sun in Rio Branco?
The typical midday UV index in Rio Branco peaks around 9 (very high) in January, easing to about 8 (very high) in May. Month-by-month midday UV values are in the UV column of the table on this page.
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