Monarch Beach water temp

This data the coastal Monarch Beach ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current ocean temperature in Monarch Beach

Water temperature in Monarch Beach today is 63.9°F. Based on our historical data over a period of ten years, the warmest water in this day in Monarch Beach was recorded in 2015 and was 74.8°F, and the coldest was recorded in 2023 at 64.9°F. Sea water temperature in Monarch Beach is expected to rise to 68.4°F in the next 10 days. September average water temperature in Monarch Beach is 69.8°F, the minimum temperature is 64.2°F, and the maximum is 75.9°F.

The swimming season in Monarch Beach lasts from July to October. During those months, Monarch Beach water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Monarch Beach in winter reaches 59.7°F, in spring 60.8°F, in summer the average temperature rises to 68.5°F, and in autumn it is 67.1°F.

Monarch Beach water temperature now

Surf Forecast in Monarch Beach for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Monarch Beach. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Monarch Beach. Data in table shown for September 27, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Monarch Beach

Monarch Beach weather forecast

Current temperature and weather

Data in a table show Monarch Beach temperature today (September 27, 2025). For more information and forecast for a few days, go to the weather forecast Monarch Beach.

0-3 h	3-6 h	6-9 h	9-12 h
65.5°F	65.8°F	66.2°F	66.7°F

12-15 h	15-18 h	18-21 h	21-24 h
66.9°F	66.7°F	65.3°F	64.4°F

Monarch Beach water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Monarch Beach. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Monarch Beach on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Monarch Beach

The most popular beaches and cities in California with sea temperature today, weather, air temperature and sea state (wave height)

	Water	Weather		Wave
San Diego	66°F	66.2°F		3' 3"
Santa Monica	68.5°F	69.8°F		2' 2"
La Jolla Cove	66.7°F	69.8°F		2' 10"
Lake Tahoe	64.2°F	73.4°F		0' 2"
Los Angeles	67.3°F	71.6°F		3' 8"
Dana Strands Beach	66°F	66.2°F		2' 7"
Divers Cove	62.6°F	66.2°F		2' 6"
San Clemente	65.7°F	66.2°F		2' 7"
T-Street Beach	66.9°F	66.2°F		2' 7"
Balboa Island	65.3°F	66.2°F		2' 4"

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Our report for Monarch Beach is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.