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Lake Flannigan – current water temperature and swimming conditions

This page provides information about the current water temperature at Lake Flannigan in Tasmania. Here you can view recent temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. A 7-day water temperature forecast, local weather conditions, and an overview of swimming suitability are also included.

Lake Flannigan
Lake Flannigan © By SurveyorMJF, CC BY-SA 4.0

Current Water Temperature

18.0°C
Today
18.0°C
Yesterday
18.0°C
A Week Ago

The water temperature in Lake Flannigan today is 18°C.

Water Temperature in Lake Flannigan: Daily Trends, Historical Records, and Forecast

⚠️ A lake temperature of 15 to 20°C is considered cool to comfortable for swimming in Australia. On warm days with light winds, this range allows for relaxed swimming, especially in shallow or sheltered areas. Comfort depends strongly on air temperature and sunshine, as cooler or overcast weather can still make the water feel chilly. This range is common during spring and early summer.

Water Temperature Over the Last 30 Days

Water temperatures in Lake Flanniganfell over the past month, but have levelled out during the last week.

According to our forecast, the water temperature in Lake Flannigan will be 15.8°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Water Temperature Data

Date Current Average Forecast
Mar 1217.4°C15.5°C
Mar 1317.9°C15.5°C
Mar 1418.0°C15.5°C
Mar 1518.0°C15.5°C
Mar 1618.0°C15.5°C
Mar 1718.0°C15.5°C
Mar 1817.2°C15.5°C
Mar 1918.0°C15.5°C
Mar 2018.0°C15.5°C18.0°C
Mar 2115.5°C17.7°C
Mar 2215.5°C17.4°C
Mar 2315.5°C17.1°C
Mar 2415.5°C16.8°C
Mar 2515.5°C16.4°C
Mar 2615.5°C16.1°C
Mar 2715.5°C15.8°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual lake water temperatures may differ from the reported values by several degrees, particularly during periods of strong winds or rapid weather changes. Wind can mix surface and deeper layers in a lake, bringing cooler water to the surface, while shallow areas may warm more quickly under direct sunlight. Air temperature, sunshine, and cloud cover strongly influence how quickly a lake heats up or cools down. These factors can lead to noticeable temperature variations across different parts of the lake.

Our forecast is based on a proprietary mathematical model that considers real-time lake temperature observations, historical trends, seasonal cycles, wind strength and direction, and region-specific air temperature. To enhance accuracy, we also incorporate data from nearby monitored locations and comparable lakes within Australia.

Monthly Water Temperature Range (Min, Max & Average)

Month Today Yesterday A Week Ago
January14°C18°C22°C
February15°C17°C21°C
March13°C16°C18°C
April10°C13°C14°C
May9°C11°C13°C
June9°C10°C11°C
July7°C9°C10°C
August8°C9°C11°C
September9°C11°C13°C
October11°C13°C15°C
November13°C15°C18°C
December14°C16°C19°C

Location & Local Information

Lake Flannigan is a small inland lake, and like many water bodies away from the coast its water temperature is closely tied to local weather and seasonal conditions. In summer, the lake typically warms to around 20–25°C, which feels comfortable for cooling off during hot days. Spring and autumn are milder, with water temperatures usually sitting between 15–20°C, while winter brings a noticeable drop to about 10–14°C, making the water feel quite cold. Because the lake is relatively shallow, temperatures can change quickly after hot spells, cool nights, or periods of strong wind.

Swimming Conditions

Swimming in Lake Flannigan is generally allowed, but it tends to be informal and seasonal. During summer, locals may swim in calm conditions when the water is warmest and levels are stable. The lack of strong currents makes swimming possible, but conditions depend heavily on recent rainfall and water quality. After heavy rain, the lake can become murky and cooler, and swimming is often avoided until things settle. In drier periods, water clarity is usually better, but fluctuating levels can affect access points. Overall, Lake Flannigan offers occasional summer swimming rather than year-round use, with conditions best suited to short, refreshing dips when the weather is warm and settled.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Flannigan?
The water temperature in Lake Flannigan today is 18°C.
What is the water temperature in Lake Flannigan during the summer months?
In summer, water temperatures in Lake Flannigan typically range from 14°C to 22°C.
Is it possible to swim in Lake Flannigan (Tasmania)?
Yes — you can swim in Lake Flannigan on King Island, but the water is generally cool year‑round and can feel much colder than coastal beaches. Before you go, check local signage and conditions, wear appropriate thermal protection (for example a wetsuit), avoid swimming alone and contact the King Island Visitor Centre or local authorities for the latest safety advice.