Byron Bay — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Byron Bay (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 Byron Bay help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Byron Bay in the Tasman Sea today is 20°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
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 Byron Bay has fallen over the last month but risen over the last 7 days. Currently, the sea water at this location is slightly cooler than average for this day in previous years.
According to our forecast, Water temperature in Byron Bay will be 21.0°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 23 | 19.8°C | 0.0°C | |
| JUN 24 | 19.6°C | 26.5°C | |
| JUN 25 | 19.8°C | 26.0°C | |
| JUN 26 | 19.6°C | 26.8°C | |
| JUN 27 | 19.7°C | 25.5°C | |
| JUN 28 | 19.6°C | 24.3°C | |
| JUN 29 | 19.8°C | 23.0°C | |
| JUN 30 | 19.2°C | 21.3°C | |
| JUL 1 | 19.7°C | 21.3°C | 19.7°C |
| JUL 2 | 21.5°C | 19.9°C | |
| JUL 3 | 21.5°C | 20.1°C | |
| JUL 4 | 21.5°C | 20.2°C | |
| JUL 5 | 21.5°C | 20.4°C | |
| JUL 6 | 22.0°C | 20.6°C | |
| JUL 7 | 21.5°C | 20.8°C | |
| JUL 8 | 22.0°C | 21.0°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
Byron Bay, on the far north coast of New South Wales, sits where warm East Australian Current waters mix with coastal upwellings, giving the bay a generally mild sea temperature year-round. Seasonal sea surface temperatures typically sit around 17–19°C in winter (June–August), rise to roughly 18–22°C in spring (September–November), peak near 21–25°C in summer (December–February) and taper to about 19–24°C in autumn (March–May). Local variations occur: sheltered bays and rock pools can be a degree or two warmer than exposed headlands, and short-term swings follow wind and swell patterns. These moderate temperatures make Byron Bay noticeably warmer than southern NSW beaches in summer but cool enough in winter to feel bracing to unacclimatised visitors.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 24°C | 26°C | 28°C |
| February | 25°C | 27°C | 29°C |
| March | 24°C | 26°C | 29°C |
| April | 23°C | 25°C | 28°C |
| May | 22°C | 24°C | 26°C |
| June | 20°C | 23°C | 25°C |
| July | 19°C | 22°C | 23°C |
| August | 19°C | 21°C | 23°C |
| September | 19°C | 22°C | 23°C |
| October | 20°C | 22°C | 26°C |
| November | 21°C | 23°C | 26°C |
| December | 22°C | 25°C | 27°C |
* Click on a month to view detailed water temperature data.
Byron Bay: Weather Forecast
July 2
July 3
July 4
Location, Beaches & Local Information
Nearby Beaches & Facilities
Byron Bay
Clarkes Beach
Belongil Beach
The Pass
Wategos Beach
Little Wategos Beach
North Belongil Beach
Tallows
Tyagarah Beach
Swimming Conditions
Swimming and beach holidays in Byron Bay suit a wide range of preferences, from relaxed paddling and family-friendly beach days to more active ocean sports. Patrolled beaches operate mainly in the warmer months, offering safer swimming between the flags, while refuges like small coves and Wategos provide calmer water on gentler days. Surfers and snorkelers find good conditions when swell and wind align, though rips and changing currents mean local advice and awareness are important. Many visitors opt for light wetsuits in the cooler months and go barefoot or with boardshorts in peak summer. Overall Byron Bay combines accessible shorelines, lifeguard coverage in season and varied coastal terrain, making it a popular destination for swimmers and beach holidaymakers throughout the year.