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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

13.0°C
Today
13.0°C
Yesterday
14.0°C
A Week Ago

The water temperature in Lake Flannigan today is 13°C.

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

⚠️ Lake temperatures between 10 and 15°C are cold but can be manageable for short swims on sunny, warm days. Shallow areas may feel slightly warmer, while deeper sections remain cold and slow to warm up. Most swimmers keep sessions brief, and wetsuits are often used for comfort. Wind and cooler air temperatures can quickly reduce how pleasant the swim feels.

Water Temperature Over the Last 30 Days

Water temperatures in Lake Flannigan have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, the water temperature in Lake Flannigan will be 11.5°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
Apr 2814.0°C11.3°C
Apr 2914.0°C11.3°C
Apr 3014.0°C11.3°C
May 114.0°C11.3°C
May 214.0°C11.3°C
May 313.0°C11.3°C
May 413.0°C11.3°C
May 513.0°C11.3°C
May 613.0°C11.3°C13.0°C
May 711.3°C12.8°C
May 811.3°C12.6°C
May 911.3°C12.4°C
May 1011.3°C12.2°C
May 1111.3°C11.9°C
May 1211.3°C11.7°C
May 1311.3°C11.5°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 13°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.