Reservoir · Brazil
Guarapiranga Reservoir
Reservoir
- Area
- 23.6km²
- Average depth
- 8.2m
- Elevation
- 738m a.s.l.
- Shoreline
- 58km
- Volume
- 0.194km³
Guarapiranga Reservoir is a reservoir in Brazil. It covers 23.6 km². On average it is 8.2 m deep. Its surface lies 738 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Guarapiranga Reservoir?
The water is warmest in February, around 27 °C at the surface, and coldest in July, around 18 °C. The surface averages 20 °C or more from September to May: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 27 °C on average in December and 22 °C in June. The driest month is August (36 mm of rain), the wettest January (230 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (66 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 | 18 | 230 | 25 | 5.2 | 12 |
| February | 27 | 27 | 27 | 18 | 175 | 22 | 6.2 | 11 |
| March | 26 | 26 | 26 | 17 | 145 | 22 | 6.1 | 12 |
| April | 24 | 25 | 25 | 15 | 84 | 13 | 6.4 | 11 |
| May | 21 | 22 | 22 | 12 | 67 | 10 | 5.7 | 12 |
| June | 19 | 20 | 22 | 11 | 58 | 8 | 5.9 | 11 |
| July | 18 | 19 | 22 | 10 | 61 | 7 | 6.2 | 12 |
| August | 20 | 20 | 24 | 11 | 36 | 7 | 6.6 | 13 |
| September | 22 | 23 | 26 | 13 | 68 | 13 | 5.6 | 14 |
| October | 24 | 24 | 27 | 14 | 104 | 16 | 5.5 | 14 |
| November | 25 | 25 | 26 | 15 | 148 | 18 | 5.4 | 15 |
| December | 26 | 26 | 27 | 17 | 177 | 22 | 5.7 | 13 |
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 4 months before flowing out.
- Its catchment drains 630 km² of land.
- About 19 m³ of water flow out every second, on average.
- Its shoreline is 3.4 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Guarapiranga Reservoir
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 3beaches and swimming spots
Praia de Avallonë, Praia do Sol
- —campsites
- —boat hire and water-sport clubs
- 2marinas and slipways
Marina Sylvestre
- —ferry piers
- 2viewpoints
Mirante Ibirapuera, Mirante do Trem
- 7hotels, B&Bs and chalets
Hotel Boninal, Hotel Bell's, Paddock Hotel, Hotel Pinheiros and 3 more
- —fishing spots
- 34restaurants and cafés
Towns on the shore
- Jardim Angela311,432 people
- Jardim Sao Luis259,377 people
- Cidade Dutra182,459 people
- Socorro38,051 people
Nearest airport with scheduled flights: Congonhas–Deputado Freitas Nobre Airport (CGH), 13 km in a straight line.
Car hire at CGH airport (São Paulo)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 | 26.6 | 26.8 | 25.9 | 24.6 | 22.0 | 21.5 | 21.6 | 23.5 | 25.7 | 26.9 | 26.4 | 27.0 |
| 2020 | +0.5 | −1.0 | −0.6 | −1.1 | −0.5 | +0.6 | +0.7 | −0.7 | +3.2 | +2.0 | +1.1 | +1.0 |
| 2021 | +1.6 | +1.3 | +2.1 | +0.5 | +1.9 | +1.0 | +0.4 | +1.5 | +3.5 | −1.2 | +1.7 | +0.5 |
| 2022 | ±0.0 | +0.2 | +0.6 | +0.3 | +0.2 | −0.1 | +3.4 | −0.7 | −2.0 | ±0.0 | −1.5 | −1.1 |
| 2023 | −0.7 | −1.0 | +0.4 | −1.2 | ±0.0 | −0.6 | +0.3 | +1.7 | +4.3 | +0.6 | +3.6 | +4.6 |
| 2024 | +2.9 | +2.4 | +2.9 | +4.4 | +5.4 | +4.4 | +2.1 | +3.0 | +5.1 | +1.2 | +1.3 | +0.7 |
| 2025 | +2.0 | +2.6 | +3.9 | +1.2 | +3.3 | +1.6 | +0.2 | +1.5 | +2.1 | +0.4 | +1.6 | +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 (Q1113437) · 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.
