Lake Killarney – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Killarney in Tasman Region. 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.
Current Water Temperature
The water temperature in Lake Killarney today is 18°C.
Water Temperature in Lake Killarney: 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
While water temperatures in Lake Killarney declined overall during the past month, they have shown a noticeable rebound over the last week.
According to our forecast, the water temperature in Lake Killarney will be 16.3°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 22 | 17.4°C | 16.0°C | |
| Mar 23 | 15.7°C | 16.0°C | |
| Mar 24 | 15.7°C | 16.0°C | |
| Mar 25 | 15.7°C | 16.0°C | |
| Mar 26 | 17.6°C | 16.0°C | |
| Mar 27 | 17.6°C | 16.0°C | |
| Mar 28 | 17.8°C | 16.0°C | |
| Mar 29 | 17.8°C | 16.0°C | |
| Mar 30 | 18.1°C | 16.0°C | 18.1°C |
| Mar 31 | 16.0°C | 17.8°C | |
| Apr 1 | 16.0°C | 17.6°C | |
| Apr 2 | 16.0°C | 17.3°C | |
| Apr 3 | 16.0°C | 17.1°C | |
| Apr 4 | 16.0°C | 16.8°C | |
| Apr 5 | 16.0°C | 16.5°C | |
| Apr 6 | 16.0°C | 16.3°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 |
|---|---|---|---|
| January | 11°C | 18°C | 24°C |
| February | 9°C | 17°C | 24°C |
| March | 10°C | 16°C | 22°C |
| April | 9°C | 14°C | 18°C |
| May | 5°C | 10°C | 14°C |
| June | 2°C | 7°C | 12°C |
| July | 1°C | 6°C | 10°C |
| August | 3°C | 7°C | 11°C |
| September | 5°C | 9°C | 13°C |
| October | 7°C | 12°C | 16°C |
| November | 8°C | 14°C | 19°C |
| December | 9°C | 15°C | 21°C |
Lake Killarney: Weather Forecast
March 30
March 31
April 1
April 2
April 3
Location & Local Information
Lake Killarney, in the Tasman Region near Takaka, is a small freshwater lake set within parkland close to the town centre. As a relatively shallow lake in a mild coastal climate, its water temperature responds quickly to seasonal air conditions. In winter, surface temperatures are generally around 10–14°C. During spring, the lake gradually warms to approximately 14–18°C as days become milder. In summer, particularly in January and February, shallow near-shore areas can reach about 20–25°C on warm, settled days. By autumn, temperatures usually ease back to between 15 and 19°C. Wind and rainfall can cause short-term changes in surface temperature and clarity.
Swimming Conditions
Swimming is allowed at Lake Killarney, and it can be appealing during the warmer months when water temperatures exceed 20°C. The most comfortable conditions are typically in mid to late summer on calm days with light winds. However, as with many small lakes, water quality can vary depending on rainfall, nutrient levels and seasonal conditions. Swimmers should use recognised access areas and check current water quality information before entering the lake. Choosing settled weather helps ensure a safer and more enjoyable freshwater swimming experience in this local park setting.