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
In Belfast, the month of January is known for its lowest average temperatures, reaching a high of 28.4°F (-2°C) and a low of 16.2°F (-8.8°C).Humidity
In Belfast, the average relative humidity in January is 82%.Rainfall
In January, the rain falls for 7.3 days. Throughout January, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 141.1 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. January is the month with the most snowfall. Snow falls for 10.1 days and accumulates 4.57" (116mm) of snow.Ocean temperature
In Belfast, in January, the average water temperature is 41.2°F (5.1°C).Note: Staying in 41.2°F (5.1°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
In January, the average length of the day is 9h and 18min.On the first day of January in Belfast, sunrise is at 7:12 am and sunset at 4:06 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:43 pm EST.
Sunshine
The average sunshine in January is 4.7h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the average humidity in January?
How many days 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 in Belfast?
How many hours of daylight does Belfast have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Belfast have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Belfast, ME
- Average high temperature in January: 28.4°F
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in January: 16.2°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in January
Belfast, ME
- Average pressure in January: 29.96"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Belfast, ME
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in January
Belfast, ME
- Average humidity in January: 82%
The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall in January
Belfast, ME
- Average rainfall in January: 1.93"
The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").
Average rainfall days in January
Belfast, ME
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in January
Belfast, ME
- Average snowfall in January: 4.57"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Belfast, ME
- Average snowfall days in January: 10.1 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in January
Belfast, ME
- Average sea temperature in January: 41.2°F
The best month for swimming (with the highest average sea temperature) is August (60.4°F).
The coldest month (with the lowest average sea temperature) is March (37.8°F).
Average daylight in January /
Average sunshine in January
Belfast, ME
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in January
Belfast, ME
- Average sunshine days in January: 16.9 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in January
Belfast, ME
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Belfast, ME
- Average cloud cover in January: 51
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in January
Belfast, ME
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Belfast, Maine, USA
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