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 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 December transitions into January, the average high-temperature rests at a still wintry 35.1°F (1.7°C), maintaining a close resemblance to the previous month. January nights experience a minor temperature downturn to a freezing cold 31.6°F (-0.2°C).Humidity
The average relative humidity in January is 81%.Rainfall
In January, the rain falls for 12.6 days. Throughout January, 3.39" (86mm) of precipitation is accumulated. Throughout the year, there are 198.8 rainfall days, and 33.78" (858mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Unalaska. The month with the most snowfall is January, when snow falls for 14.2 days and typically aggregates up to 6.97" (177mm) of snow.Ocean temperature
In January, the average ocean temperature is 39.6°F (4.2°C).Note: In the case of swimming, this is seriously cold, dangerous, and can result in death. Without the safeguard of insulated waterproof attire, hypothermia manifests rapidly.
Daylight
The average length of the day in January is 8h and 7min.On the first day of the month, sunrise is at 10:24 am and sunset at 5:55 pm. On the last day of January, sunrise is at 9:54 am and sunset at 6:45 pm AKST.
Sunshine
The average sunshine in January is 2.6h.UV index
In January, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the UV index of 2 transforms into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most?
How much does it snow in January?
What is the water temperature in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Unalaska have in January?
What is the UV index intensity in January?
Average temperature in January
Unalaska, AK
- Average high temperature in January: 35.1°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).
- Average low temperature in January: 31.6°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).
Average pressure in January
Unalaska, AK
- Average pressure in January: 29.5"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).
Average wind speed in January
Unalaska, AK
- Average wind speed in January: 15.9mph
The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in January
Unalaska, AK
- Average humidity in January: 81%
The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).
Average rainfall in January
Unalaska, AK
- Average rainfall in January: 3.39"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in January
Unalaska, AK
- Average rainfall days in January: 12.6 days
The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in January
Unalaska, AK
- Average snowfall in January: 6.97"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Unalaska, AK
- Average snowfall days in January: 14.2 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Unalaska, AK
- Average sea temperature in January: 39.5°F
The best month for swimming (with the highest average sea temperature) is August (50.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in January /
Average sunshine in January
Unalaska, AK
- Average daylight in January: 8h and 1min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in January: 2h and 4min
The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in January
Unalaska, AK
- Average sunshine days in January: 4.5 days
The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in January
Unalaska, AK
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).
Average cloud cover in January
Unalaska, AK
- Average cloud cover in January: 73
The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).
Average visibility in January
Unalaska, AK
- Average visibility in January: 5mi
The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).
Unalaska, Alaska, USA
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