Reservoir · Brazil
Furnas Reservoir
Reservoir in Brazil
- Area
- 928km²
- Average depth
- 25m
- Elevation
- 761m a.s.l.
- Shoreline
- 2,431km
- Volume
- 22.9km³
Furnas Reservoir is a reservoir in Brazil. It covers 928 km². On average it is 25 m deep. Its surface lies 761 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Furnas Reservoir?
The water is warmest in January, around 27 °C at the surface, and coldest in July, around 20 °C. The surface averages 20 °C or more from January to December: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 31 °C on average in October and 25 °C in June. The driest month is July (10 mm of rain), the wettest January (226 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (90 readings). Shallow bays and beaches are often warmer.
From above
The whole lake from space
Month by month
The year at the lake, month by month
Not a forecast: these are averages over many years. Water is the 2013–2021 average; air, rain, sun and wind are the 1991–2020 average.
Water: 2013–2021 averageClimate: 1991–2020 average
| Month | Water°C | Water high°C | Air high°C | Air low°C | Rainmm | Rainy daysdays | Sunh/day | Windkm/h |
|---|---|---|---|---|---|---|---|---|
| January | 27 | 27 | 27 | 19 | 226 | 23 | 6.8 | 11 |
| February | 27 | 27 | 27 | 19 | 150 | 19 | 7.4 | 10 |
| March | 26 | 27 | 27 | 18 | 141 | 20 | 7.0 | 10 |
| April | 25 | 26 | 26 | 17 | 54 | 10 | 7.8 | 10 |
| May | 23 | 24 | 25 | 14 | 35 | 6 | 7.7 | 10 |
| June | 21 | 22 | 25 | 12 | 16 | 3 | 8.1 | 10 |
| July | 20 | 21 | 25 | 12 | 10 | 2 | 8.6 | 11 |
| August | 21 | 22 | 28 | 13 | 12 | 2 | 9.1 | 12 |
| September | 22 | 23 | 30 | 16 | 41 | 8 | 8.3 | 13 |
| October | 24 | 25 | 31 | 18 | 93 | 15 | 7.4 | 13 |
| November | 26 | 26 | 28 | 18 | 175 | 21 | 6.1 | 12 |
| December | 27 | 27 | 28 | 19 | 219 | 25 | 6.3 | 11 |
Water: LakeTEMP (Landsat 8, 2013–2021). Air, rain, sun and wind: NASA POWER, 1991–2020 averages. A rainy day has at least 1 mm of rain. Sunshine hours are derived from measured solar radiation.
Size & depth
How big, how deep
- On average, water stays in the lake for about 10 months before flowing out.
- Its catchment drains 51,982 km² of land.
- About 858 m³ of water flow out every second, on average.
- Its shoreline is 22.5 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Furnas Reservoir
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- —beaches and swimming spots
- —campsites
- —boat hire and water-sport clubs
- 13marinas and slipways
- 10ferry piers
Porto da Harmonia ALT and 9 more
- 3viewpoints
Mirante das Escarpas
- —fishing spots
Towns on the shore
- Boa Esperança39,848 people
- Guapé13,772 people
- Campo do Meio11,377 people
- Pimenta8,563 people
- Fama2,578 people
Nearest airport with scheduled flights: Romeu Zema Airport (AAX), 183 km in a straight line.
Car hire at PLU airport (Belo Horizonte)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Recent years
How each month compared
Afternoon high on the shore. The first row is the reference, the 1991–2020 average in °C; the years below show the difference from it: warmer in orange, cooler in blue.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | 27.4 | 27.4 | 26.9 | 26.4 | 24.8 | 24.6 | 25.4 | 27.9 | 30.4 | 30.6 | 28.5 | 27.6 |
| 2020 | +1.5 | −0.9 | −0.3 | −0.6 | −1.1 | +1.1 | +1.3 | −0.7 | +2.2 | +0.8 | +0.7 | +1.0 |
| 2021 | +1.8 | +0.6 | +1.2 | +2.1 | +3.1 | +1.3 | +0.2 | +0.7 | +2.4 | −2.4 | −0.6 | −0.8 |
| 2022 | −1.1 | −1.0 | +0.3 | −0.1 | −1.7 | −0.4 | +0.6 | −1.5 | −1.7 | −1.5 | −1.5 | −0.9 |
| 2023 | −1.3 | −0.9 | −0.1 | −0.9 | −1.2 | −1.6 | −0.6 | +0.8 | +2.4 | +1.9 | +4.7 | +4.7 |
| 2024 | +2.4 | +2.5 | +3.0 | +3.2 | +5.1 | +3.1 | +2.6 | +2.1 | +3.5 | +1.3 | −1.0 | +0.7 |
| 2025 | +1.0 | +2.5 | +4.7 | +1.3 | +2.4 | +0.7 | +0.2 | −0.1 | +0.9 | +1.3 | +2.9 | +3.8 |
+1 warmer than usual −1 cooler than usual
About these numbers
| Outline, area, depth, volume | HydroLAKES v1.0 (Messager et al. 2016) · CC BY 4.0 |
|---|---|
| Water temperature and ice | LakeTEMP v1 (Korver et al. 2024), Landsat 8 2013–2021 · CC BY 4.0 |
| Air, rain, sun, wind | NASA POWER, 1991–2020 · public domain |
| Names and description | Wikidata (Q18624357) · CC0 |
| Around the shore | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average or a count from a public dataset. Licences and methods: data sources.
