Lake · Brazil · Uruguay
Lagoa Mirim
Lake on the border of Brazil and Uruguay
- Area
- 3,900km²
- Max depth
- 12m
- Average depth
- 6.0m
- Elevation
- 0m a.s.l.
- Shoreline
- 711km
- Volume
- 23.4km³
Lagoa Mirim is a lake in Brazil. It covers 3,900 km². On average it is 6.0 m deep, and 12 m at its deepest point. Its surface lies 0 m above sea level.
Plan your visit
Stay, sail and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The water
How warm is Lagoa Mirim?
The water is warmest in January, around 25 °C at the surface, and coldest in July, around 12 °C. The surface averages 20 °C or more from November to March: comfortable for most swimmers.
It does not normally freeze in winter.
On the shore, afternoons reach 29 °C on average in January and 16 °C in July. The driest month is November (84 mm of rain), the wettest September (127 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (146 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 | 25 | 25 | 29 | 19 | 104 | 12 | 9.3 | 18 |
| February | 24 | 25 | 29 | 19 | 120 | 12 | 8.3 | 17 |
| March | 23 | 24 | 27 | 18 | 107 | 11 | 7.7 | 17 |
| April | 19 | 21 | 24 | 15 | 114 | 11 | 6.7 | 16 |
| May | 16 | 18 | 19 | 11 | 114 | 9 | 5.4 | 15 |
| June | 13 | 14 | 17 | 8 | 110 | 11 | 4.8 | 15 |
| July | 12 | 12 | 16 | 8 | 95 | 10 | 5.1 | 16 |
| August | 13 | 14 | 18 | 9 | 117 | 10 | 5.4 | 17 |
| September | 15 | 16 | 19 | 10 | 127 | 10 | 6.0 | 18 |
| October | 18 | 19 | 22 | 13 | 120 | 12 | 7.0 | 18 |
| November | 21 | 22 | 25 | 15 | 84 | 9 | 9.0 | 18 |
| December | 23 | 24 | 28 | 17 | 88 | 11 | 9.4 | 18 |
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 47,756 km² of land.
- About 936 m³ of water flow out every second, on average.
- Its shoreline is 3.2 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Lagoa Mirim
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 4beaches and swimming spots
Praia da Capilha
- 1campsites
Estacionamento Capilha
- —boat hire and water-sport clubs
- 1marinas and slipways
- —ferry piers
- 1viewpoints
Falésias
- 3hotels, B&Bs and chalets
Cabañas Rodrigues, Pousada da Capilha, Hotel Laguna Merín
- —fishing spots
- 3restaurants and cafés
Nearest airport with scheduled flights: João Simões Lopes Neto International Airport (PET), 112 km in a straight line.
Car hire at PET airport (Pelotas)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Photos
Seen by visitors
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 | 29.3 | 28.6 | 26.6 | 23.5 | 19.4 | 16.6 | 15.7 | 17.5 | 18.9 | 21.7 | 24.6 | 27.6 |
| 2020 | +0.9 | +1.0 | +2.5 | +1.1 | +1.0 | +1.2 | −0.5 | +0.7 | −0.5 | −0.2 | ±0.0 | +0.7 |
| 2021 | +0.4 | −1.8 | −0.1 | +0.5 | −0.7 | −0.2 | +0.5 | +0.9 | +0.7 | +0.2 | +1.2 | ±0.0 |
| 2022 | +2.7 | +1.6 | −0.3 | +0.1 | −1.1 | −2.1 | +1.9 | −0.8 | −0.5 | −0.9 | +0.9 | +1.8 |
| 2023 | +2.9 | +1.5 | +3.1 | +0.6 | +2.0 | +1.6 | +0.8 | +1.1 | +0.2 | −0.4 | −0.8 | −1.2 |
| 2024 | −0.4 | +1.9 | +2.0 | +0.7 | −1.7 | +1.4 | −1.4 | −0.9 | +1.0 | +0.8 | +0.2 | −2.7 |
| 2025 | −0.3 | +3.5 | +2.8 | −1.1 | +1.9 | −2.0 | −0.4 | −0.2 | +1.0 | +1.7 | +2.0 | +3.0 |
+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 (Q876280) · 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.
