Lake Hāwea – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Hāwea 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 Hāwea today is 12°C.
Water Temperature in Lake Hāwea: 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 Hāwea 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 Hāwea will be 12.0°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 | 12.5°C | 12.0°C | |
| May 7 | 12.5°C | 12.0°C | |
| May 8 | 14.0°C | 12.0°C | |
| May 9 | 14.0°C | 12.0°C | |
| May 10 | 14.0°C | 12.0°C | |
| May 11 | 14.0°C | 12.0°C | |
| May 12 | 13.9°C | 12.0°C | |
| May 13 | 12.5°C | 12.0°C | |
| May 14 | 12.1°C | 12.0°C | 12.1°C |
| May 15 | 12.0°C | 12.1°C | |
| May 16 | 12.0°C | 12.1°C | |
| May 17 | 12.0°C | 12.1°C | |
| May 18 | 12.0°C | 12.1°C | |
| May 19 | 12.0°C | 12.0°C | |
| May 20 | 12.0°C | 12.0°C | |
| May 21 | 12.0°C | 12.0°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 | 13°C | 17°C | 20°C |
| February | 13°C | 17°C | 21°C |
| March | 12°C | 16°C | 19°C |
| April | 3°C | 10°C | 17°C |
| May | 9°C | 12°C | 15°C |
| June | 8°C | 11°C | 13°C |
| July | 7°C | 9°C | 11°C |
| August | 7°C | 9°C | 11°C |
| September | 7°C | 10°C | 12°C |
| October | 8°C | 11°C | 14°C |
| November | 9°C | 12°C | 15°C |
| December | 11°C | 15°C | 19°C |
Lake Hāwea: Weather Forecast
May 15
May 16
May 17
May 18
May 19
Location & Local Information
Lake Hāwea, in the Otago Region, is a deep alpine lake running parallel to Lake Wānaka and surrounded by mountain ranges. Fed by snowmelt and alpine rivers, its water remains cool throughout the year. In winter, surface temperatures are generally around 6–9°C. During spring, ongoing snowmelt keeps the lake brisk, typically between 8 and 12°C. In summer, particularly in January and February, near-shore areas around the township of Hāwea may warm to approximately 14–18°C on calm, sunny days, while deeper water stays significantly colder. By autumn, temperatures usually ease back to between 9 and 14°C. Wind can quickly influence surface conditions on this long, open lake.
Swimming Conditions
Swimming is allowed at various accessible shoreline spots, and it is popular during the warmer months. The most comfortable conditions are generally in mid to late summer when water temperatures approach the mid to high teens and winds are light. Even then, the lake can feel distinctly cold due to its alpine origin, so gradual entry is advisable. Swimmers should choose sheltered bays and calm days, as strong winds can create choppy waves. Checking weather conditions beforehand helps ensure a safer and more enjoyable experience.