Umina Beach – current water temperature and swimming conditions

This page shows the current water temperature at Umina Beach in New South Wales. 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

19.1°C

Today

19.1°C

Yesterday

19.9°C

A Week Ago

The average sea water temperature today in Umina Beach is about 19°C.

Water Temperature in Umina Beach: Daily Trends, Historical Records, and Forecast

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

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

From May 22 to June 21

Water temperatures in Umina Beach 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 Umina Beach will be 19.4°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 13	19.8°C	19.5°C
Jun 14	19.9°C	19.5°C
Jun 15	19.9°C	19.8°C
Jun 16	19.8°C	19.3°C
Jun 17	19.0°C	19.3°C
Jun 18	18.9°C	19.0°C
Jun 19	19.0°C	18.8°C
Jun 20	19.1°C	19.8°C
Jun 21	19.1°C	19.8°C	19.1°C
Jun 22		19.8°C	19.1°C
Jun 23		19.5°C	19.2°C
Jun 24		19.5°C	19.2°C
Jun 25		19.3°C	19.3°C
Jun 26		19.3°C	19.3°C
Jun 27		19.5°C	19.3°C
Jun 28		19.5°C	19.4°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 Umina Beach 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

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Umina Beach, on the southern end of the Central Coast of New South Wales, fronts the open Tasman Sea and has water temperatures that suit swimming for much of the year. In summer, the ocean is usually at its warmest, sitting around 22–26 °C, which feels comfortable for long swims and regular dips. Autumn brings a gradual cool-down to roughly 20–23 °C, still pleasant for most swimmers. Winter is cooler but far from harsh, with sea temperatures generally between 16–20 °C, while spring sees a steady warm-up from about 18 °C into the low twenties as conditions become more settled.

Monthly Water Temperature Range (Min, Max & Average)

Month	Min	Avg	Max
January	20°C	23°C	25°C
February	22°C	23°C	27°C
March	21°C	23°C	26°C
April	19°C	23°C	25°C
May	16°C	21°C	24°C
June	15°C	20°C	22°C
July	15°C	19°C	21°C
August	16°C	19°C	20°C
September	16°C	18°C	20°C
October	16°C	19°C	21°C
November	18°C	20°C	22°C
December	18°C	21°C	25°C

* Click on a month to view detailed water temperature data.

Umina Beach: Weather Forecast

June 22

9°C / 17°C

few clouds: 11-25%

humidity: 67% | wind: 7 kmh

June 23

9°C / 17°C

clear sky

humidity: 64% | wind: 7 kmh

June 24

10°C / 16°C

light rain

humidity: 77% | wind: 11 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Ocean Beach

⭐ 4.9/5

19.1°C

Umina Beach

⭐ 4.5/5

18.9°C

Booker Bay Beach

⭐ 3.0/5

18.2°C

Lobster Beach

⭐ 3.8/5

19.8°C

Ettalong Beach

⭐ 3.9/5

18.0°C

Little Tallow

⭐ 3.9/5

18.6°C

Iron Ladder

⭐ 3.1/5

18.9°C

Middle Head

⭐ 2.9/5

18.5°C

Pearl Beach

⭐ 4.2/5

20.2°C

Swimming Conditions

Swimming is allowed and popular at Umina Beach, thanks to its long, sandy shoreline and generally good water quality. The beach faces the open ocean, so surf conditions can vary and rips may form, particularly after periods of stronger swell. Parts of the beach are often patrolled during peak seasons, providing safer swimming areas when flags are in place. On calmer days, entry from the sand is easy and the water feels clean and refreshing. Confident swimmers enjoy the classic surf-beach conditions, while families and casual swimmers tend to choose patrolled sections or lighter swell days for a safer, more relaxed swim.