Mona Vale Sea Temperature

Looking to find out what the sea water temperature in Mona Vale is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Mona Vale and nearby locations.

Water temperature in Mona Vale right now

Below is the current sea temperature for Mona Vale, Australia on 12th July 2025.

17.91° C

(64.24° F)

yesterday: 17.89° C (64.2° F)
a week ago: 18.41° C (65.14° F)

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

The average sea temperature for Mona Vale on July 12th over the last 10 years is 18.81° C (65.86° F), with a low temperature of 17.84° C (64.11° F) and a high of 20.42° C (68.76° F).

Analysis and forecast for Mona Vale water temperatures

The water temperature in Mona Vale today is lower than the average temperature of 18.81° C (65.86° F) and the temperature on this day last year, 12th July 2024, was 17.89° C (64.2° F).

The chart and table below shows the change in water temperature in Mona Vale over the last 30 days:

Date	Temperature (Celsius)	Temperature (Fahrenheit)
July 12	17.91° C	64.24° F
July 11	17.89° C	64.2° F
July 10	18.37° C	65.07° F
July 9	18.21° C	64.78° F
July 8	18.16° C	64.69° F
July 7	18.16° C	64.69° F
July 6	18.18° C	64.72° F
July 5	18.41° C	65.14° F
July 4	18.48° C	65.26° F
July 3	18.92° C	66.06° F
July 2	18.5° C	65.3° F
July 1	19.17° C	66.51° F
June 30	19.08° C	66.34° F
June 29	19.17° C	66.51° F
June 28	19.19° C	66.54° F
June 27	19.37° C	66.87° F
June 26	19.45° C	67.01° F
June 25	19.43° C	66.97° F
June 24	19.11° C	66.4° F
June 23	18.85° C	65.93° F
June 22	18.84° C	65.91° F
June 21	18.79° C	65.82° F
June 20	18.7° C	65.66° F
June 19	18.59° C	65.46° F
June 18	18.68° C	65.62° F
June 17	18.78° C	65.8° F
June 16	18.82° C	65.88° F
June 15	18.82° C	65.88° F
June 14	18.82° C	65.88° F
June 13	18.88° C	65.98° F
June 12	18.9° C	66.02° F

The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.

Water temperature in Mona Vale by month

The chart below shows the monthly average water temperature in Mona Vale.

For more detailed information on how the sea temperature in Mona Vale changes for each month of the year, choose from the months below.

January February March April May June July August September October November December

Mona Vale map and nearby water temperatures