World sea water temperatures

Water temperature in Richardson Bay (CA) in September

Home > United States > California > Richardson Bay

Is it warm enough to swim in Richardson Bay in September? Average water temperature in Richardson Bay in September is 61.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Richardson Bay in September is 66.9°F, and the coldest is 55.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Richardson Bay

Changes water temperature in Richardson Bay in September 2025, 2024

To get an accurate forecast for the water temperature in Richardson Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Richardson Bay, 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 166.7°F61.9°F56.5°F66.7°F
September 266°F62.8°F56.7°F66°F
September 365.1°F62.6°F56.7°F65.3°F
September 463°F64°F56.7°F66.6°F
September 5 64°F56.5°F65.7°F
September 6 64.4°F56.5°F66°F
September 7 63°F56.7°F66.2°F
September 8 64.4°F56.5°F65.5°F
September 9 65.5°F56.3°F65.8°F
September 10 64.6°F55.9°F65.8°F
September 11 64.8°F55.8°F65.7°F
September 12 64.9°F56.3°F66.9°F
September 13 64.2°F56.7°F64.9°F
September 14 63.7°F57°F64.9°F
September 15 62.4°F56.5°F64°F
Day 2025 2024 Min Max
September 16 61°F57°F64.6°F
September 17 60.4°F57.9°F64.8°F
September 18 61.2°F57.6°F64.4°F
September 19 61°F57.7°F65.1°F
September 20 62.6°F57.4°F64.6°F
September 21 61°F57.2°F64.6°F
September 22 61.7°F57°F65.1°F
September 23 61.7°F57.2°F64.8°F
September 24 63.1°F57°F65.1°F
September 25 63°F57°F64.9°F
September 26 61.2°F56.7°F64°F
September 27 62.6°F55.8°F64.2°F
September 28 61.3°F56.1°F65.5°F
September 29 60.8°F56.1°F64.6°F
September 30 61.3°F56.3°F65.1°F
Richardson Bay water temp chart in September

Average water temperature in Richardson Bay in September over a decade

20152016201720182019
60.6°F59.2°F63.7°F62.4°F63.9°F
20202021202220232024
63.5°F64.8°F64.6°F64.6°F62.6°F

Richardson Bay sea state in September

Chart comparing the height of waves in Richardson Bay 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 Richardson Bay in September

Richardson Bay 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
Paradise Beach Park61.7°F55.8°F68.9°F
Marshall's Beach61.2°F55.8°F66.9°F
Alcatraz61.7°F55.8°F69.3°F
Angel Island61.7°F55.8°F69.3°F
Albany61.9°F55.8°F70.3°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 (Richardson Bay) 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 Richardson Bay 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