January weather forecast
Port San Luis, CA

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Weather in January

January is a refreshing winter month in Port San Luis, California, with an average temperature varying between 62.4°F (16.9°C) and 46.9°F (8.3°C).

Temperature

With the arrival of January, Port San Luis's average high-temperature registers at a still refreshing 62.4°F (16.9°C), indicating a subtle variation from the previous month. An average low-temperature of 46.9°F (8.3°C) is observed in Port San Luis during the January nights.

Humidity

The average relative humidity in January is 63%.

Rainfall

In Port San Luis, during January, the rain falls for 6.9 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Port San Luis, California, during the entire year, the rain falls for 57 days and collects up to 9.57" (243mm) of precipitation.

Daylight

In January, the average length of the day is 10h and 7min.
On the first day of the month, sunrise is at 7:11 am and sunset at 5:01 pm. On the last day of January, in Port San Luis, California, sunrise is at 7:02 am and sunset at 5:30 pm PST.

Sunshine

In Port San Luis, the average sunshine in January is 6.7h.

UV index

In Port San Luis, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In January, the UV index of 4 transforms into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Port San Luis in January?

In January, in Port San Luis, the average high-temperature is 62.4°F (16.9°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in January in Port San Luis?

In January, the average relative humidity in Port San Luis, California, is 63%.

How much does it rain in Port San Luis in January?

In Port San Luis, in January, it is raining for 6.9 days, with typically 1.85" (47mm) of accumulated precipitation.

What is the average length of the day in January in Port San Luis?

In January, the average day length in Port San Luis is 10h and 7min.

When are sunrise and sunset in January in Port San Luis?

In January, on the first day of the month, sunrise is at 7:11 am and sunset at 5:01 pm. On the last day of the month, in Port San Luis, sunrise is at 7:02 am and sunset at 5:30 pm PST.

How long on average sun shines in January in Port San Luis?

In Port San Luis, the average sunshine duration in January is 6.7h.

What is the UV index intensity in January in Port San Luis?

In January, the average daily maximum UV index in Port San Luis is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Port San Luis, CA

Average temperature in January - Port San Luis, CA
  • Average high temperature in January: 62.4°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (60.3°F).

  • Average low temperature in January: 46.9°F

The month with the highest average low temperature is September (60.3°F).
The coldest month (with the lowest average low temperature) is February (45.7°F).

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Average pressure in January
Port San Luis, CA

Average pressure in January - Port San Luis, CA
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed in January
Port San Luis, CA

Average wind speed in January - Port San Luis, CA
  • Average wind speed in January: 6mph

The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest months (with the lowest average wind speed) are August and September (5.3mph).

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Average humidity in January
Port San Luis, CA

Average humidity in January - Port San Luis, CA
  • Average humidity in January: 63%

The month with the highest relative humidity is March (69%).
The months with the lowest relative humidity are September and October (57%).

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Average rainfall in January
Port San Luis, CA

Average rainfall in January - Port San Luis, CA
  • Average rainfall in January: 1.85"

The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in January
Port San Luis, CA

Average rainfall days in January - Port San Luis, CA
  • Average rainfall days in January: 6.9 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in January /
Average sunshine in January
Port San Luis, CA

Average daylight in January / Average sunshine in January - Port San Luis, CA
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in January: 6h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).

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Average sunshine days in January
Port San Luis, CA

Average sunshine days in January - Port San Luis, CA
  • Average sunshine days in January: 22.8 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is February (19.1 days).

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Average UV index in January
Port San Luis, CA

Average UV index in January - Port San Luis, CA
  • Average UV index in January: 4

The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is February (UV index 3).

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Average cloud cover in January
Port San Luis, CA

Average cloud cover in January - Port San Luis, CA
  • Average cloud cover in January: 24

The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are August and September (Cloud cover 6).

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Average visibility in January
Port San Luis, CA

Average visibility in January - Port San Luis, 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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Port San Luis, California, USA

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