Margaret River – current river water temperature and swimming conditions

This page shows the current river water temperature at Margaret River in Western Australia. You can explore recent temperature trends, typical monthly ranges, and historical averages for this date. The page also includes a 7-day water temperature forecast, local weather conditions, and an overview of how suitable the river is for swimming.

Current Water Temperature

15.4°C

Today

15.5°C

Yesterday

16.0°C

A Week Ago

The water temperature in Margaret River today is 15°C.

Water Temperature in Margaret River: 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 Margaret River 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 Margaret River will be 14.5°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
Apr 28	15.7°C	14.5°C
Apr 29	15.8°C	14.5°C
Apr 30	16.0°C	14.5°C
May 1	15.8°C	14.5°C
May 2	15.8°C	14.5°C
May 3	15.7°C	14.5°C
May 4	15.7°C	14.5°C
May 5	15.5°C	14.5°C
May 6	15.4°C	14.5°C	15.4°C
May 7		14.5°C	15.3°C
May 8		14.5°C	15.2°C
May 9		14.5°C	15.0°C
May 10		14.5°C	14.9°C
May 11		14.5°C	14.8°C
May 12		14.5°C	14.7°C
May 13		14.5°C	14.5°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	20°C	24°C	26°C
February	21°C	23°C	25°C
March	16°C	21°C	23°C
April	13°C	18°C	20°C
May	13°C	15°C	17°C
June	11°C	12°C	14°C
July	11°C	12°C	13°C
August	12°C	13°C	14°C
September	13°C	15°C	17°C
October	15°C	17°C	19°C
November	18°C	20°C	22°C
December	18°C	22°C	25°C

Location & Local Information

The Margaret River flows through forest, farmland, and coastal bushland before meeting the Indian Ocean at Prevelly, and its water temperatures are noticeably milder than the nearby ocean. In summer, from December to February, river temperatures usually sit around 20–24°C, making the water feel warm and inviting, especially on hot days. Autumn remains comfortable at roughly 18–22°C, while winter sees a clear cool-down, often around 12–15°C after rainfall and cooler nights. Spring brings a steady rise again, with temperatures commonly in the 16–20°C range as air temperatures improve and flow levels settle.

Swimming Conditions

Swimming in the Margaret River is allowed and very popular, particularly in the calmer inland sections away from the river mouth. These stretches tend to have gentle currents, shaded banks, and deeper pools that suit relaxed swimming, floating, and family-friendly dips. In summer, the river is ideal for longer swims without the need for wetsuits, offering a peaceful alternative to the often windy coastline. During spring and autumn, shorter swims are still comfortable, while winter swimming is generally brief due to cooler water and higher flows. Overall, the Margaret River provides excellent swimming opportunities for much of the year, combining relatively warm freshwater with sheltered, easy-going conditions that suit a wide range of swimmers.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in Margaret River?

The water temperature in Margaret River today is 15°C.

What is the water temperature in Margaret River during the summer months?

In summer, water temperatures in Margaret River typically range from 18°C to 26°C.

Is it possible to swim in Margaret River (Western Australia)?

Yes — you can swim in Margaret River, but bear in mind the Southern Ocean is often cool (roughly 15–22°C year‑round) and surf and rips can be strong. Always check local beach conditions, swim between the flags where lifeguards are on duty, and consider a wetsuit outside the warmest summer months.