Lake Benmore – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Benmore in Canterbury 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 Benmore today is 16°C.
Water Temperature in Lake Benmore: 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 Benmore have been on a steady rise over the past month and have continued to climb over the last week.
According to our forecast, the water temperature in Lake Benmore will be 17.8°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 22 | 15.6°C | 16.5°C | |
| Mar 23 | 14.1°C | 16.5°C | |
| Mar 24 | 14.1°C | 16.5°C | |
| Mar 25 | 15.7°C | 16.5°C | |
| Mar 26 | 15.7°C | 16.5°C | |
| Mar 27 | 15.7°C | 16.5°C | |
| Mar 28 | 14.4°C | 16.5°C | |
| Mar 29 | 14.4°C | 16.5°C | |
| Mar 30 | 15.9°C | 16.5°C | 15.9°C |
| Mar 31 | 16.5°C | 16.2°C | |
| Apr 1 | 16.5°C | 16.5°C | |
| Apr 2 | 16.5°C | 16.7°C | |
| Apr 3 | 16.5°C | 17.0°C | |
| Apr 4 | 16.5°C | 17.3°C | |
| Apr 5 | 16.5°C | 17.6°C | |
| Apr 6 | 16.5°C | 17.8°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 |
|---|---|---|---|
| January | 13°C | 17°C | 21°C |
| February | 13°C | 18°C | 22°C |
| March | 12°C | 17°C | 21°C |
| April | 10°C | 14°C | 17°C |
| May | 7°C | 11°C | 15°C |
| June | 4°C | 8°C | 11°C |
| July | 3°C | 6°C | 9°C |
| August | 3°C | 6°C | 9°C |
| September | 1°C | 7°C | 12°C |
| October | 7°C | 11°C | 14°C |
| November | 10°C | 14°C | 17°C |
| December | 12°C | 16°C | 20°C |
Lake Benmore: Weather Forecast
March 30
March 31
April 1
April 2
April 3
April 4
Location & Local Information
Lake Benmore, in the Canterbury Region near Ōmārama, is a large hydro lake formed on the Waitaki River. Surrounded by dry high country and rolling hills, its water temperature reflects both alpine inflows and hot inland summers. In winter, surface temperatures are generally around 6–9°C. During spring, snowmelt from upstream catchments keeps the lake cool, typically between 8 and 13°C. In summer, particularly in January and February, sheltered bays and near-shore areas can warm to approximately 15–20°C on calm, sunny days, while deeper water remains cooler. By autumn, temperatures usually ease back to between 9 and 15°C. Wind can mix the surface layer and influence comfort levels.
Swimming Conditions
Swimming is allowed at many accessible shoreline spots and campgrounds around Lake Benmore, and it is popular during the warmer months. The most comfortable conditions are usually in mid to late summer when water temperatures approach the high teens and winds are light. However, the lake is large and can become choppy in strong winds, which are common in this inland area. Swimmers should choose sheltered bays and calm days, and enter gradually due to the cool alpine influence. Checking weather conditions beforehand helps ensure a safer and more enjoyable experience.