Weather in Lumiar: temperature and rain by month
Lumiar has hot, rainy summers and dry, cool winters. The difference shapes your trip: December gets seven times more rain than July.
| Month | Low | High | Rain (mm) |
|---|---|---|---|
| January | 19 °C | 27 °C | 319 |
| February | 19 °C | 27 °C | 229 |
| March | 19 °C | 26 °C | 263 |
| April | 17 °C | 25 °C | 141 |
| May | 14 °C | 22 °C | 89 |
| June | 13 °C | 22 °C | 50 |
| July | 13 °C | 22 °C | 46 |
| August | 13 °C | 22 °C | 55 |
| September | 15 °C | 24 °C | 119 |
| October | 16 °C | 25 °C | 185 |
| November | 17 °C | 25 °C | 309 |
| December | 19 °C | 26 °C | 348 |
Climatempo climatology for Lumiar, based on 30 years of data.
Forecast for the coming days
Averages are not a forecast. For the next 15 days, check the Lumiar page on Climatempo or INMET before going, especially if you plan waterfalls or Pedra Riscada.
Best time
- December to March: pleasant water and lush forest, but almost daily afternoon showers. Plan the pools for the morning.
- April and May: less rain, still warm days. A good balance.
- June to August: dry, clear skies, great for hiking; lows of 13 °C call for a chalet with a fireplace.
- September to November: rain returns gradually and November already passes 300 mm.
A mountain river changes colour before it rises. Muddy water or the sound of rolling rocks means get out.
To choose pools by the day, see Lumiar waterfalls. To plan the road in rain, see how to get to Lumiar.
Frequently asked questions
Does it get cold in Lumiar?
In winter, by Rio standards: average lows are 13 °C from June to August and highs 22 °C.
Which month is wettest?
December, with 348 mm on average. July is the driest, with 46 mm.
Sources
Checked on October 19, 2026. Prices and opening hours change: always confirm with the official source before you travel.