Lake Waihola – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Waihola in Otago 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 Waihola today is 14°C.
Water Temperature in Lake Waihola: 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 Waihola 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 Waihola will be 9.9°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 |
|---|---|---|---|
| May 6 | 14.5°C | 9.3°C | |
| May 7 | 14.5°C | 9.3°C | |
| May 8 | 14.6°C | 9.3°C | |
| May 9 | 14.6°C | 9.3°C | |
| May 10 | 14.6°C | 9.3°C | |
| May 11 | 14.6°C | 9.3°C | |
| May 12 | 14.5°C | 9.3°C | |
| May 13 | 14.5°C | 9.3°C | |
| May 14 | 14.2°C | 9.3°C | 14.2°C |
| May 15 | 9.3°C | 13.6°C | |
| May 16 | 9.3°C | 13.0°C | |
| May 17 | 9.3°C | 12.4°C | |
| May 18 | 9.3°C | 11.8°C | |
| May 19 | 9.3°C | 11.1°C | |
| May 20 | 9.3°C | 10.5°C | |
| May 21 | 9.3°C | 9.9°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 New Zealand.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 11°C | 17°C | 23°C |
| February | 11°C | 18°C | 24°C |
| March | 9°C | 14°C | 19°C |
| April | 3°C | 10°C | 16°C |
| May | 4°C | 9°C | 13°C |
| June | 0°C | 4°C | 8°C |
| July | 0°C | 3°C | 6°C |
| August | 0°C | 5°C | 9°C |
| September | 1°C | 7°C | 13°C |
| October | 5°C | 11°C | 16°C |
| November | 9°C | 14°C | 19°C |
| December | 3°C | 13°C | 22°C |
Lake Waihola: Weather Forecast
May 15
May 16
May 17
May 18
May 19
Location & Local Information
Lake Waihola is a shallow tidal freshwater lake located south of Dunedin in the Otago Region. Its limited depth means the water warms relatively quickly in summer compared with deeper South Island lakes. During the warmest months, from December to February, surface water temperatures typically range between 17°C and 22°C, occasionally climbing slightly higher during prolonged settled weather. In spring and autumn, temperatures generally sit between 11°C and 16°C, while in winter they commonly drop to around 6°C to 9°C. Because the lake is influenced by tidal flows and inflow from surrounding catchments, temperatures can fluctuate depending on recent weather and river conditions.
Swimming Conditions
Swimming is permitted and the lake is used for a range of recreational activities, including kayaking, rowing and powerboating. However, as with many lowland lakes, water clarity and quality can vary, particularly after heavy rain when runoff enters the lake. In mid to late summer, when water temperatures reach the high teens or low twenties, conditions can feel comfortable for a swim on a warm day. Outside the main summer period, the cooler temperatures make swimming more suitable for short dips rather than extended time in the water. Visitors are generally advised to check current conditions before swimming, especially following significant rainfall.