Morro Bay
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Morro Bay, CA

The iconic Morro Rock, a famous tourist spot in Morro Bay, California, with an even more scenic view of the yellow sun setting. Blue sky
The iconic Morro Rock, a famous tourist spot in Morro Bay, California, with an even more scenic view of the yellow sun setting. Blue sky
December, the first month of the winter, in Morro Bay, is also an enjoyable month, with average temperature ranging between max 64.8°F (18.2°C) and min 44.4°F (6.9°C).

Temperature

With an average high-temperature of 64.8°F (18.2°C) and an average low-temperature of 44.4°F (6.9°C), December is the coldest month.

Rainfall

In December, in Morro Bay, the rain falls for 7.1 days. Throughout December, 2.7" (69.1mm) of precipitation is accumulated. In Morro Bay, during the entire year, the rain falls for 49.5 days and collects up to 17.5" (444.1mm) of precipitation.

Ocean temperature

In Morro Bay, the average water temperature is 57.6°F (14.2°C).
Note: Swimming in 57.6°F (14.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

With an average of 9.8h of daylight, December has the shortest days of the year in Morro Bay.

What is the coldest month in Morro Bay?

The coldest month in Morro Bay is December, with an average high-temperature of 64.8°F (18.2°C) and an average low-temperature of 44.4°F (6.9°C).

What is the temperature in December in Morro Bay?

The average high-temperature, in December, is 64.8°F (18.2°C), while the average low-temperature is 44.4°F (6.9°C).

How many days does it rain in December in Morro Bay?

In Morro Bay, in December, during 7.1 rainfall days, 2.7" (69.1mm) of precipitation is typically accumulated.

What is the water temperature in December in Morro Bay?

In Morro Bay, in December, the average water temperature is 57.6°F (14.2°C). Swimming in 57.6°F (14.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Morro Bay?

The month with the shortest days is December, with an average of 9.8h of daylight.

What is the average length of the day in December in Morro Bay?

The average length of the day in December in Morro Bay, California, is 9.8h.
Average temperature in December - Morro Bay, CA
  • Average high temperature in December: 64.8°F

The warmest month (with the highest average high temperature) is October (71.4°F).
The month with the lowest average high temperature is December (64.8°F).

  • Average low temperature in December: 44.5°F

The month with the highest average low temperature is August (55.6°F).
The coldest month (with the lowest average low temperature) is December (44.5°F).

Average rainfall in December - Morro Bay, CA
  • Average rainfall in December: 2.7"

The wettest month (with the highest rainfall) is February (3.8").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in December - Morro Bay, CA
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is February (9.2 days).
The month with the lowest number of rainy days is July (0.4 days).

Average sea temperature in December - Morro Bay, CA
  • Average sea temperature in December: 57.5°F

Best months for swimming (with the highest average sea temperature) are August and October (58.6°F).
The coldest month (with the lowest average sea temperature) is April (54.3°F).

Average daylight in December - Morro Bay, CA
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).