Invercargill – current water temperature and swimming conditions
This page provides information about the current water temperature at Invercargill in Southland 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 Ōreti River at Invercargill today is 15°C.
Water Temperature in Ōreti River at Invercargill: Daily Trends, Historical Records, and Forecast
⚠️ A river temperature of 15 to 20°C is generally considered cool to comfortable for swimming in Australia. On warm, calm days, this range allows for relaxed swimming and longer time in the water. Comfort depends heavily on air temperature and sunshine, as cooler weather can still make the water feel chilly. This range is popular for river swimming during spring and early autumn.
Water Temperature Over the Last 30 Days
Water temperatures in Invercargill 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 Invercargill will be 15.0°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 |
|---|---|---|---|
| Mar 22 | 14.6°C | 15.0°C | |
| Mar 23 | 14.6°C | 15.0°C | |
| Mar 24 | 14.6°C | 15.0°C | |
| Mar 25 | 14.6°C | 15.0°C | |
| Mar 26 | 15.2°C | 15.0°C | |
| Mar 27 | 15.2°C | 15.0°C | |
| Mar 28 | 15.3°C | 15.0°C | |
| Mar 29 | 15.3°C | 15.0°C | |
| Mar 30 | 15.3°C | 15.0°C | 15.3°C |
| Mar 31 | 15.0°C | 15.3°C | |
| Apr 1 | 15.0°C | 15.2°C | |
| Apr 2 | 15.0°C | 15.2°C | |
| Apr 3 | 15.0°C | 15.2°C | |
| Apr 4 | 15.0°C | 15.1°C | |
| Apr 5 | 15.0°C | 15.1°C | |
| Apr 6 | 15.0°C | 15.0°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual river water temperatures may vary by several degrees from the reported values, particularly after heavy rainfall or periods of changing weather. Rainfall, river flow rates, and runoff from cooler upstream areas can significantly affect water temperature, especially in flowing sections and shaded stretches. Air temperature and cloud cover also play an important role, with warm, sunny conditions helping rivers warm up more quickly. As a result, noticeable temperature differences can occur along the same river.
Our forecast is based on a proprietary mathematical model that takes into account real-time river temperature changes, historical data, seasonal patterns, river flow conditions, recent rainfall, and local air temperature. We also factor in broader weather conditions specific to each region of Australia to improve accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 12°C | 18°C | 24°C |
| February | 13°C | 19°C | 25°C |
| March | 10°C | 15°C | 20°C |
| April | 8°C | 13°C | 17°C |
| May | 6°C | 11°C | 15°C |
| June | 2°C | 7°C | 12°C |
| July | 2°C | 5°C | 8°C |
| August | 3°C | 7°C | 11°C |
| September | 4°C | 9°C | 14°C |
| October | 7°C | 12°C | 16°C |
| November | 9°C | 14°C | 19°C |
| December | 12°C | 19°C | 25°C |
Invercargill: Weather Forecast
March 30
March 31
April 1
April 2
April 3
April 4
Location & Local Information
Invercargill is located close to the lower reaches of the Ōreti River, which flows through flat Southland countryside before reaching the coast. Water temperature in this part of the river reflects the region’s cool southern climate. In summer, the Ōreti River near Invercargill typically reaches around 15–19 °C, feeling cool but refreshing on warm days. During spring and autumn, temperatures usually sit between 10–14 °C. In winter, the water becomes very cold, often around 6–9 °C, making it unsuitable for prolonged immersion.
Swimming Conditions
Swimming in the Ōreti River around Invercargill is allowed and is most common during the summer months, particularly at known shallow sections and river beaches with easy access. The river’s relatively gentle flow compared with larger Southland rivers makes certain areas suitable for casual swimming and cooling off in settled weather. Even in mid-summer, the water remains on the cool side, so most swims are short rather than extended. After heavy rain, water levels can rise and clarity can reduce, affecting comfort and safety. Outside the warmer months, low temperatures generally discourage swimming. Overall, Invercargill offers limited but pleasant summer swimming opportunities in the Ōreti River, while for much of the year the river is better enjoyed as a scenic feature and for riverside recreation rather than regular swimming.