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
January's presence records an average high-temperature of a still refreshing 56.3°F (13.5°C), closely mirroring December's climate. In January, Oakland records an average nighttime temperature of 45.7°F (7.6°C).Humidity
In January, the average relative humidity in Oakland is 73%.Rainfall
In Oakland, in January, during 6.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Oakland, during the entire year, the rain falls for 44 days and collects up to 3.03" (77mm) of precipitation.Ocean temperature
In Oakland, California, in January, the average water temperature is 53.2°F (11.8°C).Note: Swimming in 53.2°F (11.8°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
In January, the average length of the day in Oakland is 9h and 54min.On the first day of the month, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:31 pm PST.
Sunshine
The average sunshine in January is 6.1h.UV index
The months with the lowest UV index in Oakland, California, are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In January, a regular UV index of 3 translates into these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What is the temperature in January in Oakland?
What is the average humidity in January in Oakland?
How much does it rain in Oakland in January?
What is the ocean temperature in January in Oakland?
How many hours of daylight does Oakland have in January?
When are sunrise and sunset in January in Oakland?
How many hours of sunshine does Oakland have in January?
What are the months with the lowest UV index in Oakland?
What is the UV index intensity in January in Oakland?
Average temperature in January
Oakland, CA
- Average high temperature in January: 56.3°F
The warmest month (with the highest average high temperature) is September (73.9°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in January: 45.7°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 (45.7°F).
Average pressure in January
Oakland, 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
Oakland, CA
- Average wind speed in January: 5.7mph
The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity in January
Oakland, 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 (67%).
Average rainfall in January
Oakland, CA
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is February (0.67").
The driest month (with the least rainfall) is July (0").
Average rainfall days in January
Oakland, CA
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is March (8.5 days).
The months with the least rainy days are June and August (0.8 days).
Average sea temperature in January
Oakland, 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
Oakland, 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: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Oakland, CA
- Average sunshine days in January: 23.5 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in January
Oakland, 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, February, November and December (UV index 3).
Average cloud cover in January
Oakland, 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 12).
Average visibility in January
Oakland, 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).
Oakland, California, USA
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