Dunedin — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Dunedin (New Zealand). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Dunedin help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Dunedin in the Pacific Ocean today is 12°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Dunedin today is lower than both a week ago and a month ago. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Dunedin will be 11.1°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 6 | 12.6°C | 12.3°C | |
| JUN 7 | 12.5°C | 12.3°C | |
| JUN 8 | 12.6°C | 11.8°C | |
| JUN 9 | 12.6°C | 11.5°C | |
| JUN 10 | 12.5°C | 11.5°C | |
| JUN 11 | 12.3°C | 11.3°C | |
| JUN 12 | 12.3°C | 11.3°C | |
| JUN 13 | 12.3°C | 11.8°C | |
| JUN 14 | 12.1°C | 11.8°C | 12.1°C |
| JUN 15 | 10.8°C | 12.0°C | |
| JUN 16 | 11.0°C | 11.8°C | |
| JUN 17 | 10.8°C | 11.7°C | |
| JUN 18 | 11.0°C | 11.5°C | |
| JUN 19 | 11.0°C | 11.4°C | |
| JUN 20 | 10.8°C | 11.2°C | |
| JUN 21 | 10.8°C | 11.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Dunedin sits on the southeast coast of New Zealand’s South Island, with coastline shaped by the Otago Peninsula and the entrance to Otago Harbour. Sea temperatures are generally cool year-round, with summer (December–February) averages around 12–15°C and occasional warmer pockets in sheltered bays reaching the mid-teens. Autumn (March–May) typically sees waters of about 10–13°C as the ocean slowly cools, while winter (June–August) brings the coldest conditions, commonly 7–9°C. Spring (September–November) is transitional, with temperatures commonly between 9–12°C. Local conditions vary with wind, tides and currents, and sheltered harbour areas are often 1–2°C warmer than exposed ocean beaches, while rocky shores and deeper water stay colder.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 11°C | 14°C | 17°C |
| February | 12°C | 15°C | 19°C |
| March | 12°C | 14°C | 18°C |
| April | 11°C | 13°C | 17°C |
| May | 9°C | 12°C | 15°C |
| June | 9°C | 11°C | 13°C |
| July | 8°C | 10°C | 13°C |
| August | 8°C | 10°C | 11°C |
| September | 8°C | 10°C | 12°C |
| October | 8°C | 11°C | 13°C |
| November | 8°C | 12°C | 15°C |
| December | 10°C | 14°C | 17°C |
* Click on a month to view detailed water temperature data.
Dunedin: Weather Forecast
June 15
June 16
June 17
Location, Beaches & Local Information
Nearby Beaches & Facilities
Ocean Beach
Saint Clair Beach
St Kilda Beach
Lawyers Head Beach
Second Beach
Tomahawk Beach
Tunnel Beach
Smaill's Beach
Macandrew Bay Beach
Swimming Conditions
Swimming and beach holidays in Dunedin suit visitors who expect cooler water and often plan for shorter sea dips, wetsuits or alternative aquatic activities. Popular sandy spots such as St Clair, St Kilda and Brighton offer patrolled swimming in summer and are hubs for surfers, swimmers and beachgoers, while more sheltered spots around the Otago Peninsula and inner harbour provide gentler water for family bathing and snorkeling when conditions allow. Tide pools, rocky coves and coastal walks add variety for non-swimmers, and the region’s wildlife—seals, penguins and seabirds—can enhance a seaside visit. As with all coastal areas, visitors should heed local safety advice, swim at supervised beaches where possible and be prepared for rapid changes in weather and water temperature.