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
As January unfolds, the average high-temperature reaches a still moderate 56.7°F (13.7°C), hinting at a slight fluctuation from the previous month. Throughout the month of January, Alameda sees a steady low-temperature average of 45°F (7.2°C).Humidity
In January, the average relative humidity is 73%.Rainfall
In Alameda, in January, during 9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Alameda, during the entire year, the rain falls for 67.2 days and collects up to 6.1" (155mm) of precipitation.Ocean temperature
In January, the average ocean temperature is 53.2°F (11.8°C).Note: Dipping into 53.2°F (11.8°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
In Alameda, the average length of the day in January is 9h and 55min.On the first day of January, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:31 pm PST.
Sunshine
In Alameda, California, the average sunshine in January is 6.2h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in January translates into the following instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature?
What is the average humidity in January?
How much does it rain in Alameda in January?
What is the ocean temperature in January?
What is the average length of the day in January?
What time are sunrise and sunset in January in Alameda?
How many hours of sunshine does Alameda have in January?
What are the months with the lowest UV index in Alameda?
How high is the UV index in January?
Average temperature in January
Alameda, CA
- Average high temperature in January: 56.7°F
The warmest month (with the highest average high temperature) is September (75.9°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in January: 45°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure in January
Alameda, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in January
Alameda, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest months (with the lowest average wind speed) are October and November (5.2mph).
Average humidity in January
Alameda, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall in January
Alameda, CA
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is February (1.18").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in January
Alameda, CA
- Average rainfall days in January: 9 days
The month with the highest number of rainy days is March (11.4 days).
The month with the least rainy days is August (1.3 days).
Average sea temperature in January
Alameda, CA
- Average sea temperature in January: 53.2°F
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight in January /
Average sunshine in January
Alameda, CA
- Average daylight in January: 9h and 5min
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: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Alameda, CA
- Average sunshine days in January: 20.9 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (17.3 days).
Average UV index in January
Alameda, CA
- Average UV index in January: 3
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in January
Alameda, CA
- Average cloud cover in January: 32
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Alameda, 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).
Alameda, California, USA
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