Lake · India
Ashtamudi Lake
Lake in India
- Area
- 31.1km²
- Average depth
- 7.1m
- Elevation
- 2m a.s.l.
- Shoreline
- 96km
- Volume
- 0.221km³
Ashtamudi Lake is a lake in India. It covers 31.1 km². On average it is 7.1 m deep. Its surface lies 2 m above sea level.
Plan your visit
Stay, sail and get there
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The water
How warm is Ashtamudi Lake?
The water is warmest in April, around 30 °C at the surface, and coldest in August, around 27 °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 34 °C on average in March and 27 °C in July. The driest month is January (15 mm of rain), the wettest October (327 mm).
Average surface temperature measured by the Landsat 8 satellite between 2013 and 2021 at the point furthest from the shore (76 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 | 28 | 28 | 30 | 20 | 15 | 2 | 8.7 | 8 |
| February | 28 | 29 | 33 | 21 | 25 | 4 | 9.2 | 7 |
| March | 29 | 30 | 34 | 23 | 60 | 6 | 8.8 | 7 |
| April | 30 | 30 | 32 | 24 | 130 | 15 | 7.9 | 7 |
| May | 30 | 30 | 30 | 24 | 233 | 18 | 6.2 | 11 |
| June | 28 | 29 | 28 | 24 | 302 | 24 | 4.6 | 14 |
| July | 28 | 28 | 27 | 23 | 244 | 25 | 4.4 | 14 |
| August | 27 | 27 | 27 | 23 | 210 | 21 | 5.1 | 13 |
| September | 27 | 28 | 27 | 23 | 233 | 18 | 6.2 | 12 |
| October | 28 | 28 | 28 | 23 | 327 | 22 | 6.3 | 8 |
| November | 28 | 28 | 28 | 22 | 218 | 18 | 6.5 | 6 |
| December | 28 | 28 | 28 | 20 | 55 | 8 | 7.5 | 8 |
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 52 days before flowing out.
- Its catchment drains 1,505 km² of land.
- About 49 m³ of water flow out every second, on average.
- Its shoreline is 4.9 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Ashtamudi Lake
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 2beaches and swimming spots
Sivam Beach Resort
- 1campsites
Karbala Ground
- 4boat hire and water-sport clubs
Adventure Park Boat Terminal, Boat Jetty, President's Trophy Boat Race
- 3marinas and slipways
Kavanad Boat Yard
- 48ferry piers
Kollam Boat Jetty, Thoppilkadavu, Perumon Munroe Island Ferry, Vallakkadavu Boat Jetty, Plavara Boat Jetty and 43 more
- 4viewpoints
Presidents Trophy View Point, Sunset Point
- 73hotels, B&Bs and chalets
Nani, Karuna Residency, Lakshmi Tourist Home, Sreenivas Tourist Home, Sri Uma Maheswara Tourist Home and 68 more
- 276fishing spots
Chineese Fishing Nets and 275 more
- 78restaurants and cafés
Towns on the shore
- Kollam367,107 people
- Chavara42,655 people
- Tirkadavūr39,285 people
- Panayāttur Vadakkumbhāgam25,607 people
- Karuva25,432 people
Nearest airport with scheduled flights: Thiruvananthapuram International Airport (TRV), 65 km in a straight line.
Car hire at COK airport (Kochi)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 | 29.9 | 32.8 | 34.0 | 32.0 | 29.5 | 27.7 | 26.9 | 27.0 | 27.4 | 27.7 | 27.7 | 27.8 |
| 2020 | +0.3 | +1.0 | +1.2 | +2.1 | +0.5 | +0.2 | ±0.0 | +0.3 | −0.4 | −0.3 | +0.7 | −0.1 |
| 2021 | −2.3 | −2.2 | −1.1 | −1.0 | −1.0 | ±0.0 | +0.1 | +0.1 | ±0.0 | −0.4 | −1.0 | +0.1 |
| 2022 | −1.1 | −0.8 | −0.3 | −1.5 | −1.1 | ±0.0 | ±0.0 | −0.1 | +0.1 | ±0.0 | ±0.0 | +0.3 |
| 2023 | −0.2 | +0.3 | +0.2 | +1.5 | +0.6 | +1.5 | +1.1 | +2.4 | +0.5 | +0.8 | +0.5 | +0.2 |
| 2024 | −1.2 | +0.4 | +2.3 | +3.0 | +1.1 | +0.5 | +0.4 | +0.2 | +0.6 | +0.2 | +0.5 | +0.7 |
| 2025 | −0.8 | +0.9 | −0.4 | −2.1 | −0.1 | +0.3 | +0.3 | ±0.0 | +0.2 | +0.4 | +0.2 | −0.1 |
+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 (Q2605009) · 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.
