Santa Cruz
California, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Santa Cruz, CA

A high aerial view of the bay area in Santa Cruz, California, view of the beach sand, numerous parked cars, scenic trees, and residential homes
A high aerial view of the bay area in Santa Cruz, California, view of the beach sand, numerous parked cars, scenic trees, and residential homes
January, like December, is a moderate winter month in Santa Cruz, California, with average temperature varying between 60.6°F (15.9°C) and 40.8°F (4.9°C).

Temperature

In Santa Cruz, the average high-temperature is practically the same as in December - a still mild 60.6°F (15.9°C). In January, the average low-temperature is 40.8°F (4.9°C).

Rainfall

January is the month with the most rainfall. Rain falls for 10.6 days and accumulates 6.4" (162.6mm) of precipitation.

Ocean temperature

In Santa Cruz, the average water temperature is 54.1°F (12.3°C). Swimming in 54.1°F (12.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Santa Cruz, the average length of the day in January is 10h.

Sunshine

In January, the average sunshine in Santa Cruz is 6h.

UV index

Months with the lowest UV index in Santa Cruz are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from the exposure to the Sun's UV radiation for the average person.
The average daily UV index of 2 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in January in Santa Cruz?

In Santa Cruz, in January, the average high-temperature is 60.6°F (15.9°C), and the average low-temperature is 40.8°F (4.9°C).

How many days does it rain in January in Santa Cruz?

In Santa Cruz, California, in January, during 10.6 rainfall days, 6.4" (162.6mm) of precipitation is typically accumulated.

What is the wettest month in Santa Cruz?

January is the month with the most rainfall in Santa Cruz, California. Rain falls for 10.6 days and accumulates 6.4" (162.6mm) of precipitation.

How cold is the water in January in Santa Cruz?

In January, the average ocean temperature is 54.1°F (12.3°C). Swimming in 54.1°F (12.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Santa Cruz have in January?

In January, the average length of the day in Santa Cruz is 10h.

How many hours of sunshine does Santa Cruz have in January?

The average sunshine in January is 6h.

What is the month with the lowest UV index in Santa Cruz?

Months with the lowest UV index in Santa Cruz, California, are January and December, with an average maximum UV index of 2.

How high is the UV index in January in Santa Cruz?

In Santa Cruz, California, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in January - Santa Cruz, CA
  • Average high temperature in January: 60.6°F

The warmest month (with the highest average high temperature) is September (74.5°F).
The month with the lowest average high temperature is December (60°F).

  • Average low temperature in January: 40.8°F

The month with the highest average low temperature is August (53.9°F).
Coldest months (with the lowest average low temperature) are January and December (40.8°F).

Average rainfall in January - Santa Cruz, CA
  • Average rainfall in January: 6.4"

The wettest month (with the highest rainfall) is January (6.4").
Driest months (with the lowest rainfall) are July and August (0").

Average rainfall days in January - Santa Cruz, CA
  • Average rainfall days in January: 10.6 days

The month with the highest number of rainy days is February (10.9 days).
The month with the lowest number of rainy days is July (0.3 days).

Average sea temperature in January - Santa Cruz, CA
  • Average sea temperature in January: 54.1°F

The best month for swimming (with the highest average sea temperature) is September (58.2°F).
The coldest month (with the lowest average sea temperature) is April (53.9°F).

Average daylight in January / Average sunshine in January - Santa Cruz, CA
  • Average daylight in January: 10h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in January: 6h

Months with most sunshine are May, June and July (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 5h).

Average UV index in January - Santa Cruz, CA
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 9).
Months with the lowest UV index are January and December (UV index 2).