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 snowfall in January
- Average snowfall days 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 takes its course, Swansea's average high-temperature registers at a still frosty 48.4°F (9.1°C), closely aligning with the preceding month. An average temperature of 33.1°F (0.6°C) is recorded in Swansea during the nights in January.Humidity
In Swansea, California, the average relative humidity in January is 46%.Rainfall
In January, in Swansea, California, the rain falls for 5.1 days. Throughout January, 0.63" (16mm) of precipitation is accumulated. Throughout the year, in Swansea, there are 48 rainfall days, and 4.92" (125mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Swansea, in January, snow falls for 1 days, with typically accumulated 0.55" (14mm) of snow. Throughout the year, there are 4.5 snowfall days, and 3.07" (78mm) of snow is accumulated.Daylight
The average length of the day in January is 10h and 0min.On the first day of the month, sunrise is at 7:03 am and sunset at 4:46 pm. On the last day of January, in Swansea, California, sunrise is at 6:53 am and sunset at 5:16 pm PST.
Sunshine
January, February and December, with an average of 7.3h of sunshine, are months with the least sunshine.UV index
The average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in January converts into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What are the temperatures in Swansea in January?
What is the average humidity in January in Swansea?
How many days does it rain in January in Swansea?
How much does it snow in Swansea in January?
What is the average length of the day in January in Swansea?
What time are sunrise and sunset in January in Swansea?
What is the month with the least sunshine in Swansea?
How long on average sun shines in January in Swansea?
What is the UV index intensity in January in Swansea?
Average temperature in January
Swansea, CA
- Average high temperature in January: 48.4°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (46.9°F).
- Average low temperature in January: 33.1°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure in January
Swansea, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in January
Swansea, CA
- Average wind speed in January: 5.9mph
The windiest months (with the highest average wind speed) are April, May and June (7.6mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).
Average humidity in January
Swansea, CA
- Average humidity in January: 46%
The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is August (19%).
Average rainfall in January
Swansea, CA
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is December (0.67").
The driest months (with the least rainfall) are June and September (0.16").
Average rainfall days in January
Swansea, CA
- Average rainfall days in January: 5.1 days
The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is September (2.3 days).
Average snowfall in January
Swansea, CA
- Average snowfall in January: 0.55"
The month with the highest snowfall is December (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in January
Swansea, CA
- Average snowfall days in January: 1 days
The month with the highest number of snowfall days is December (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Swansea, CA
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 7h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 18min).
Average sunshine days in January
Swansea, CA
- Average sunshine days in January: 23.5 days
The month with the most sunshine days is October (27.7 days).
The month with the least sunshine days is July (20 days).
Average UV index in January
Swansea, CA
- Average UV index in January: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in January
Swansea, CA
- Average cloud cover in January: 16
The month with the most cloud cover is January (Cloud cover 16).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility in January
Swansea, 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).
Swansea, California, USA
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