January weather forecastMoss Beach, CA
January
Weather in January
January, the same as December, in Moss Beach, California, is another mild winter month, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 48.7°F (9.3°C).Temperature
Moss Beach records a slight change with January's average high-temperatures adjusting to a still mild 55.9°F (13.3°C) from December's 55.6°F (13.1°C). Moss Beach maintains a near steady average temperature of 48.7°F (9.3°C) during the nights of January, demonstrating little drop from daytime highs.Humidity
In January, the average relative humidity in Moss Beach is 74%.Rainfall
In January, in Moss Beach, the rain falls for 8.3 days. Throughout January, 1.18" (30mm) of precipitation is accumulated. Throughout the year, there are 77.3 rainfall days, and 6.81" (173mm) of precipitation is accumulated.Ocean temperature
In Moss Beach, California, in January, the average water temperature is 53.2°F (11.8°C).Note: While a brief time in 53.2°F (11.8°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
The average length of the day in January in Moss Beach is 9h and 56min.On the first day of January, sunrise is at 7:24 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:32 pm PST.
Sunshine
In January, the average sunshine in Moss Beach, California, is 5.9h.UV index
In January, the average daily maximum UV index in Moss Beach is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 4 during January leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Moss Beach, CA
- Average high temperature in January: 55.9°F
The warmest month (with the highest average high temperature) is September (67.5°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in January: 48.7°F
The month with the highest average low temperature is September (56.8°F).
The coldest months (with the lowest average low temperature) are January and February (48.7°F).
Average pressure in January
Moss Beach, 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).
Average wind speed in January
Moss Beach, CA
- Average wind speed in January: 7.4mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are August and September (6.8mph).
Average humidity in January
Moss Beach, CA
- Average humidity in January: 74%
The month with the highest relative humidity is August (82%).
The months with the lowest relative humidity are November and December (72%).
Average rainfall in January
Moss Beach, CA
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is February (1.34").
The driest months (with the least rainfall) are June, July and September (0.12").
Average rainfall days in January
Moss Beach, CA
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is September (3.6 days).
Average sea temperature in January
Moss Beach, CA
- Average sea temperature in January: 53.3°F
The best month for swimming (with the highest average sea temperature) is September (56.9°F).
The coldest month (with the lowest average sea temperature) is June (52.4°F).
Average daylight in January /
Average sunshine in January
Moss Beach, CA
- Average daylight in January: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 5h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Moss Beach, CA
- Average sunshine days in January: 21.6 days
The month with the most sunshine days is October (24.5 days).
The month with the least sunshine days is August (18.7 days).
Average UV index in January
Moss Beach, CA
- Average UV index in January: 4
The months with the highest UV index are June, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover in January
Moss Beach, CA
- Average cloud cover in January: 35
The month with the most cloud cover is March (Cloud cover 39).
The months with the least cloud cover are September and October (Cloud cover 21).
Average visibility in January
Moss Beach, 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).





