January weather forecast
Monterey, CA

The rugged mountainous coast of Big Sur in Monterey, California
The rugged mountainous coast of Big Sur in Monterey, California

Weather in January

January, the same as December, in Monterey, California, is another mild winter month, with an average temperature fluctuating between 59°F (15°C) and 46.4°F (8°C).

Temperature

In January, the average high-temperature is practically the same as in December - a still moderate 59°F (15°C). In Monterey, the average low-temperature is 46.4°F (8°C).

Humidity

In Monterey, the average relative humidity in January is 71%.

Rainfall

In Monterey, during 9.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 73.6 rainfall days, and 11.77" (299mm) of precipitation is accumulated.

Ocean temperature

In Monterey, the average water temperature is 54.1°F (12.3°C).
Note: 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 Monterey, California, the average length of the day in January is 10h and 0min.
On the first day of January, sunrise is at 7:19 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:32 pm PST.

Sunshine

The average sunshine in January in Monterey is 6.4h.

UV index

The average daily maximum UV index in January in Monterey is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in January in Monterey?

In Monterey, in January, the average high-temperature is 59°F (15°C), and the average low-temperature is 46.4°F (8°C).

What is the average humidity in January in Monterey?

The average relative humidity in January in Monterey, California, is 71%.

How much does it rain in Monterey in January?

In Monterey, California, in January, during 9.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

How cold is the water in January in Monterey?

In January, the average ocean temperature is 54.1°F (12.3°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in January in Monterey?

In Monterey, California, the average day length in January is 10h and 0min.

When is the sunrise / sunset in January in Monterey?

In January, on the first day of the month, sunrise is at 7:19 am and sunset at 5:02 pm. On the last day of the month, in Monterey, California, sunrise is at 7:09 am and sunset at 5:32 pm PST.

How long on average sun shines in January in Monterey?

In Monterey, the average sunshine duration in January is 6.4h.

What is the UV index intensity in January in Monterey?

In January, the average daily maximum UV index in Monterey, California, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Monterey, CA

Average temperature in January - Monterey, CA
  • Average high temperature in January: 59°F

The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (57.2°F).

  • Average low temperature in January: 46.4°F

The months with the highest average low temperature are August and September (55.2°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in January
Monterey, CA

Average pressure in January - Monterey, CA
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in January
Monterey, CA

Average wind speed in January - Monterey, CA
  • Average wind speed in January: 6.2mph

The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in January
Monterey, CA

Average humidity in January - Monterey, CA
  • Average humidity in January: 71%

The months with the highest relative humidity are March and May (76%).
The month with the lowest relative humidity is November (68%).

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Average rainfall in January
Monterey, CA

Average rainfall in January - Monterey, CA
  • Average rainfall in January: 1.89"

The wettest month (with the highest rainfall) is December (2.4").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in January
Monterey, CA

Average rainfall days in January - Monterey, CA
  • Average rainfall days in January: 9.3 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (1.1 days).

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Average sea temperature in January
Monterey, CA

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

The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).

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Average daylight in January /
Average sunshine in January
Monterey, CA

Average daylight in January / Average sunshine in January - Monterey, CA
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 37min).
The month with the shortest days is December (Average daylight: 9h and 43min).

  • Average sunshine in January: 6h and 24min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in January
Monterey, CA

Average sunshine days in January - Monterey, CA
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is March (16.8 days).

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Average UV index in January
Monterey, CA

Average UV index in January - Monterey, CA
  • Average UV index in January: 4

The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in January
Monterey, CA

Average cloud cover in January - Monterey, CA
  • Average cloud cover in January: 29

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Monterey, CA

Average visibility in January - Monterey, CA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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