Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
During January, Seal Beach records an average high-temperature of a still comfortable 64.6°F (18.1°C), marking a slight divergence from December's 62.8°F (17.1°C). Seal Beach reports an average nighttime low-temperature of 53.6°F (12°C) in January.Humidity
In Seal Beach, the average relative humidity in January is 59%.Rainfall
In Seal Beach, in January, it is raining for 5.2 days, with typically 1.69" (43mm) of accumulated precipitation. In Seal Beach, during the entire year, the rain falls for 57.8 days and collects up to 8.82" (224mm) of precipitation.Ocean temperature
January is the month with the coldest seawater, with an average ocean temperature of 58.3°F (14.6°C).Note: If planning to swim in 58.3°F (14.6°C) under 50°F (10°C), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 55.4°F (13°C) is not much warmer.
Daylight
In January, the average length of the day is 10h and 13min.On the first day of January, sunrise is at 6:57 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 5:22 pm PST.
Sunshine
In Seal Beach, the average sunshine in January is 6.8h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in January leads to these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
How much does it rain in January?
When is the ocean coldest?
What is the water temperature in January in Seal Beach?
How many hours of daylight does Seal Beach have in January?
What time are sunrise and sunset in January in Seal Beach?
How many hours of sunshine does Seal Beach have in January?
What is the month with the lowest UV index in Seal Beach?
How high is the UV index in January?
Average temperature in January
Seal Beach, CA
- Average high temperature in January: 64.6°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in January: 53.6°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is February (52.7°F).
Average pressure in January
Seal Beach, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in January
Seal Beach, CA
- Average wind speed in January: 5.6mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.3mph).
Average humidity in January
Seal Beach, CA
- Average humidity in January: 59%
The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (57%).
Average rainfall in January
Seal Beach, CA
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Seal Beach, CA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is March (8.1 days).
The months with the least rainy days are June and August (2.3 days).
Average sea temperature in January
Seal Beach, CA
- Average sea temperature in January: 58.3°F
The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).
Average daylight in January /
Average sunshine in January
Seal Beach, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in January
Seal Beach, CA
- Average sunshine days in January: 24.2 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (19.3 days).
Average UV index in January
Seal Beach, CA
- Average UV index in January: 4
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in January
Seal Beach, CA
- Average cloud cover in January: 21
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in January
Seal 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).
Seal Beach, California, USA
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