Prevelly – current water temperature and swimming conditions
This page shows the current water temperature at Prevelly in Western Australia. You can view recent sea temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, nearby beaches with similar conditions, local weather information, and a summary of swimming conditions to help you assess how suitable the water is for swimming.
Current Sea Water Temperature
The average sea water temperature today in Prevelly is about 21°C.
Water Temperature in Prevelly: Daily Trends, Historical Records, and Forecast
✅ This water feels mild to warm and is comfortable for the majority of swimmers. Swimming is enjoyable, though longer stays may feel cooler for some people, especially in windy conditions. These temperatures are well suited to family outings and active swimming, particularly on warm days.
It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.
Water Temperature Over the Last 30 Days
Water temperatures in Prevelly have been gradually cooling over the past month, with a further drop recorded during the last week.
According to our forecast, Sea water temperature in Prevelly will be 22.1°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 |
|---|---|---|---|
| Mar 12 | 21.4°C | 21.5°C | |
| Mar 13 | 21.1°C | 21.8°C | |
| Mar 14 | 20.7°C | 21.5°C | |
| Mar 15 | 20.6°C | 21.5°C | |
| Mar 16 | 20.8°C | 22.0°C | |
| Mar 17 | 20.7°C | 22.0°C | |
| Mar 18 | 20.6°C | 21.8°C | |
| Mar 19 | 20.6°C | 22.0°C | |
| Mar 20 | 20.6°C | 22.0°C | 20.6°C |
| Mar 21 | 22.3°C | 20.8°C | |
| Mar 22 | 22.3°C | 21.0°C | |
| Mar 23 | 22.8°C | 21.3°C | |
| Mar 24 | 21.8°C | 21.5°C | |
| Mar 25 | 22.3°C | 21.7°C | |
| Mar 26 | 22.8°C | 21.9°C | |
| Mar 27 | 22.3°C | 22.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual near-shore water temperatures in Prevelly can vary by several degrees from the values shown, particularly after heavy rain, strong southerlies, or prolonged windy conditions. Certain wind patterns can trigger upwelling, where cooler, deeper water is pushed to the surface and replaces the warmer top layer, leading to noticeable short-term changes in water temperature.
Our water temperature forecast is produced using a proprietary mathematical model that combines real-time measurements with long-term historical patterns, local weather conditions, wind strength and direction, and air temperature specific to each coastal region. To improve accuracy, we cross-check data from nearby locations and use multiple sources, including offshore buoys, satellite-based sea surface maps, and observations provided by local authorities.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Prevelly sits at the mouth of the Margaret River, where the river meets the Indian Ocean and shapes a mix of open beach and sheltered corners. Water temperatures here are cool but quite consistent year-round. In summer, from December to February, the sea usually ranges between 19–22°C, which feels comfortable on warm, sunny days. Autumn brings a gradual cooling to around 17–20°C. Winter is colder and more bracing, most often sitting at 14–16°C, while spring sees a steady warm-up again to roughly 16–18°C, though early-season swims can still feel crisp.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 18°C | 21°C | 23°C |
| February | 19°C | 21°C | 24°C |
| March | 19°C | 22°C | 25°C |
| April | 18°C | 22°C | 24°C |
| May | 19°C | 21°C | 24°C |
| June | 17°C | 20°C | 22°C |
| July | 16°C | 20°C | 21°C |
| August | 17°C | 18°C | 20°C |
| September | 16°C | 18°C | 20°C |
| October | 16°C | 18°C | 20°C |
| November | 16°C | 19°C | 21°C |
| December | 17°C | 20°C | 23°C |
* Click on a month to view detailed water temperature data.
Prevelly: Weather Forecast
March 21
March 22
March 23
Local Water Conditions and Nearby Spots
Nearby Beaches and Water Temperatures
Margaret River Mouth
Gnarabup Beach
Prevelly Beach Surfspot
Gas Bay
Kilcarnup Beach
Gnoocardup Beach
Redgate Beach
Swimming Conditions
Swimming at Prevelly is allowed, but conditions vary depending on location and weather. Near the river mouth and in more protected sections, the water is often calmer, making swimming approachable in summer for confident swimmers and families. These areas tend to have gentler waves and easier entry than the fully exposed beach. Further out, the coastline is known for strong swell and currents, better suited to surfers than casual swimmers. In summer, many people swim without wetsuits, while spring and autumn are better for shorter dips. Winter swimming is usually limited to locals or those wearing thermal gear. Overall, Prevelly offers a balance of accessible swimming spots and energetic ocean conditions, with cool, clean Indian Ocean water and a distinctly coastal Margaret River feel.
🏄♀️ Nearby Surf Spots and Water Temperatures
Gnarabup
Surfers Point
Southside
The Bombie and Boat Ramp
Margaret River Mouth
Margaret River Bommie
Margaret River - South Side
The Box
Grunters
Location, Type and Nearby Places
Address: Shire of Augusta-Margaret River
Place Tags:Coastal Town
Water Temperature in Nearby Places
