Harrington — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Harrington (Australia). 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 Harrington help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Harrington in the Tasman Sea today is 21°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
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 Harrington 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 Harrington will be 21.2°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 3 | 21.6°C | 21.8°C | |
| JUN 4 | 21.6°C | 21.8°C | |
| JUN 5 | 21.5°C | 21.5°C | |
| JUN 6 | 21.0°C | 21.8°C | |
| JUN 7 | 21.0°C | 21.3°C | |
| JUN 8 | 20.9°C | 21.8°C | |
| JUN 9 | 20.9°C | 21.8°C | |
| JUN 10 | 21.0°C | 21.5°C | |
| JUN 11 | 20.9°C | 21.5°C | 20.9°C |
| JUN 12 | 22.0°C | 20.9°C | |
| JUN 13 | 21.3°C | 21.0°C | |
| JUN 14 | 21.5°C | 21.0°C | |
| JUN 15 | 21.5°C | 21.1°C | |
| JUN 16 | 21.5°C | 21.1°C | |
| JUN 17 | 21.5°C | 21.1°C | |
| JUN 18 | 21.8°C | 21.2°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
Harrington is a small coastal town on the Mid North Coast of New South Wales at the entrance to the Manning River, where estuarine waters meet the Tasman Sea. Water temperatures here vary with the seasons and the mix of shallow river and ocean influences. In summer (December–February) sea temperatures typically sit around 22–25°C, making for comfortable swimming without wet suits for most people. During autumn (March–May) waters usually fall to about 19–23°C as the ocean begins to cool. Winter (June–August) brings the coldest conditions, with averages near 15–18°C, though sheltered parts of the estuary can be a couple of degrees warmer. Spring (September–November) is transitional, with temperatures commonly in the 17–21°C range. Local rainfall, tides and river flows can produce short-term variations, especially in the estuary where shallow water warms and cools more quickly than open sea.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 22°C | 25°C | 27°C |
| February | 23°C | 25°C | 28°C |
| March | 23°C | 25°C | 27°C |
| April | 22°C | 25°C | 26°C |
| May | 19°C | 23°C | 25°C |
| June | 18°C | 21°C | 23°C |
| July | 18°C | 21°C | 22°C |
| August | 18°C | 20°C | 22°C |
| September | 17°C | 20°C | 22°C |
| October | 18°C | 21°C | 23°C |
| November | 19°C | 21°C | 25°C |
| December | 20°C | 23°C | 27°C |
* Click on a month to view detailed water temperature data.
Harrington: Weather Forecast
June 12
June 13
June 14
June 15
Location, Beaches & Local Information
Nearby Beaches & Facilities
Kylies Beach
Swimming Conditions
Swimming and beach holiday options at Harrington suit a range of preferences, from quiet estuary swims to more exposed ocean beaches and surf breaks a short distance away. The estuary offers calm, shallow areas suitable for families, paddling and supervised bathing in protected coves, while the ocean beaches provide space for open-water swimming and surfing when conditions are favourable. Visitors should be mindful of currents near the river mouth and changing tidal channels; pockets of stronger flow and rips can occur, so choosing sheltered spots or swimming between flagged areas where available is advisable. Summer and early autumn offer the warmest, most pleasant conditions for leisurely beach days, while cooler months may require wetsuits for extended swims. Checking local conditions and signage will help ensure a safe and enjoyable stay.