World sea water temperatures

Water temperature in Aptos (CA) in September

Is it warm enough to swim in Aptos in September? Average water temperature in Aptos in September is 59.4°F and therefore is not suitable for comfortable swimming. The warmest sea in Aptos in September is 63.7°F, and the coldest is 55.2°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Aptos

Changes water temperature in Aptos in September 2025, 2024

To get an accurate forecast for the water temperature in Aptos for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Aptos, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 162.2°F60.6°F55.2°F63.7°F
September 261.5°F60.4°F55.8°F62.8°F
September 361.5°F61°F55.8°F62.4°F
September 461.7°F61.2°F55.8°F62.2°F
September 5 61.2°F55.6°F61.9°F
September 6 60.6°F55.8°F61.9°F
September 7 61.2°F56.1°F62.8°F
September 8 61°F55.9°F62.4°F
September 9 60.6°F55.4°F63.5°F
September 10 60.4°F55.4°F63.1°F
September 11 61.5°F55.6°F63°F
September 12 61.9°F56.3°F63°F
September 13 61.7°F56.7°F63.1°F
September 14 61°F56.8°F63.5°F
September 15 60.1°F56.7°F63°F
Day 2025 2024 Min Max
September 16 59.2°F56.7°F62.4°F
September 17 59.9°F57°F62.1°F
September 18 60.1°F56.3°F62.4°F
September 19 59.7°F56.1°F62.4°F
September 20 59.5°F56.3°F62.6°F
September 21 59.2°F56.5°F63.1°F
September 22 58.8°F56.7°F63.1°F
September 23 59.9°F56.7°F63.1°F
September 24 59.5°F56.8°F63.5°F
September 25 60.1°F57°F63.7°F
September 26 60.8°F56.3°F63.7°F
September 27 61.3°F56.1°F63.1°F
September 28 61°F55.9°F63°F
September 29 60.4°F56.1°F63°F
September 30 60.6°F56.1°F62.2°F
Aptos water temp chart in September

Average water temperature in Aptos in September over a decade

20152016201720182019
61.2°F57.9°F61.5°F58.6°F60.3°F
20202021202220232024
59.4°F61.3°F61°F62.1°F60.4°F

Aptos sea state in September

Chart comparing the height of waves in Aptos in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Aptos in September

Aptos water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Best Beach Resorts in California in September

Places with the warmest average sea water temperature in California in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
San Diego69.1°F63.1°F75.6°F
Santa Monica68.4°F62.6°F73.4°F
La Jolla Cove70°F63.7°F76.1°F
Lake Tahoe64.9°F59°F70.5°F
Los Angeles68.2°F61.5°F74.3°F
Pleasure Point59.4°F55.2°F63.9°F
Manresa State Beach59.4°F55.2°F63.9°F
Watsonville59.4°F55°F64°F
Pajaro Dunes59.5°F55°F64°F
Palm Beach State Park59.5°F55°F64°F

California photo gallery

  • California
  • California
  • California
  • Lake tahoe Balloon rides

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Vote for California best beach

Current rating: (0 votes cast)

If you know this place (Aptos) and want to leave your comment or rate it, then fill out the following form.

Your rating for this place:

Does this place have a "Blue Flag" award [1], are there rip currents and what type of beach is it, sand or pebble:

Is the beach a dog-friendly place, child friendly or a nudist beach?


Your comments for this place (water quality, crowds, facilities, activities, lifeguards, service etc.):



[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

Get widget or API for your website

Our report for Aptos 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.

Contact us: admin@seatemperature.info
privacy policy