Morro Bay — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Morro Bay (California, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Morro Bay help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Morro Bay in the Pacific Ocean today is 19°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Morro Bay has risen over the last week and month. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Morro Bay will be 16.5°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 |
|---|---|---|---|
| OCT 12 | 19.9°C | 16.8°C | |
| OCT 13 | 19.5°C | 16.0°C | |
| OCT 14 | 19.2°C | 15.5°C | |
| OCT 15 | 19.0°C | 15.3°C | |
| OCT 16 | 18.8°C | 15.0°C | |
| OCT 17 | 18.9°C | 15.3°C | |
| OCT 18 | 18.9°C | 15.5°C | |
| OCT 19 | 18.9°C | 15.5°C | |
| OCT 20 | 19.4°C | 15.5°C | 19.4°C |
| OCT 21 | 14.5°C | 19.0°C | |
| OCT 22 | 15.5°C | 18.6°C | |
| OCT 23 | 14.8°C | 18.1°C | |
| OCT 24 | 14.5°C | 17.7°C | |
| OCT 25 | 15.8°C | 17.3°C | |
| OCT 26 | 15.0°C | 16.9°C | |
| OCT 27 | 15.3°C | 16.5°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Morro Bay, on California’s central coast, is a shallow estuarine bay sheltered by a volcanic outcrop known as Morro Rock and backed by sandy beaches and wetlands. The bay’s water temperatures are moderated by the cool California Current and upwelling, so conditions remain relatively chilly year-round compared with southern California. Typical sea surface temperatures range roughly from about 10–12 °C in the coldest months (December through March) to roughly 14–17 °C during the warmest period in late summer and early fall. Spring and early summer are transitional, with temperatures commonly between 11 and 14 °C. Local weather patterns such as marine fog and onshore wind can make the air feel cooler than the water and influence perceived comfort.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 11°C | 13°C | 17°C |
| February | 11°C | 13°C | 15°C |
| March | 9°C | 12°C | 15°C |
| April | 10°C | 12°C | 14°C |
| May | 10°C | 13°C | 15°C |
| June | 11°C | 13°C | 16°C |
| July | 12°C | 14°C | 17°C |
| August | 12°C | 15°C | 18°C |
| September | 13°C | 16°C | 17°C |
| October | 13°C | 15°C | 18°C |
| November | 12°C | 14°C | 18°C |
| December | 12°C | 14°C | 16°C |
* Click on a month to view detailed water temperature data.
Morro Bay: Weather Forecast
October 21
October 22
October 23
October 24
Location, Beaches & Local Information
Nearby Beaches & Facilities
Coleman Park
Morro Bay Harbor
Bayshore Bluffs Park
Tidelands Park
Morro Bay State Park
City T-Piers
Morro Dunes Natural Preserve
S Morro Strand State Beach
Morro Strand State Beach - South Beach
Swimming Conditions
Swimming and beach recreation in Morro Bay are popular but often require preparation due to the cool water and variable conditions. The bay’s protected waters are calmer than the open ocean and are frequently used for paddle sports, casual swimming on milder days, and supervised activities; many visitors choose wetsuits for longer swims or watersports, while short dips are common without them in warm spells. Open ocean beaches nearby, including Morro Strand and areas toward Montana de Oro, offer traditional beach experiences and surfing but can have strong currents, rip tides, and rocky sections, so swimmers should heed posted warnings and lifeguard advisories. Overall, Morro Bay is well suited to a beach holiday that blends wildlife viewing, kayaking and brisk coastal swims rather than warm-water lounging.