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
January, known for its average high temperature of 36.9°F (2.7°C) and an average low temperature of 25.9°F (-3.4°C), is the coldest month.Humidity
In January, the average relative humidity is 74%.Rainfall
In Perth Amboy, in January, during 9.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Perth Amboy, during the entire year, the rain falls for 157.5 days and collects up to 31.42" (798mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Perth Amboy, in January, snow falls for 5.8 days, with typically accumulated 1.57" (40mm) of snow. Throughout the year, there are 19.5 snowfall days, and 8.35" (212mm) of snow is accumulated.Ocean temperature
In Perth Amboy, in January, the average water temperature is 41.7°F (5.4°C).Note: While a brief time in 41.7°F (5.4°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In Perth Amboy, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:20 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 5:13 pm EST.
Sunshine
In Perth Amboy, the average sunshine in January is 5.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How many days does it snow in January?
What is the ocean temperature in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How many hours of sunshine does Perth Amboy have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Perth Amboy, NJ
- Average high temperature in January: 36.9°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in January: 25.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in January
Perth Amboy, NJ
- Average pressure in January: 30.07"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Perth Amboy, NJ
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
Perth Amboy, NJ
- Average humidity in January: 74%
The months with the highest relative humidity are February and May (77%).
The months with the lowest relative humidity are March, April, August and November (73%).
Average rainfall in January
Perth Amboy, NJ
- Average rainfall in January: 2.01"
The wettest months (with the highest rainfall) are July and December (3.31").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in January
Perth Amboy, NJ
- Average rainfall days in January: 9.3 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in January
Perth Amboy, NJ
- Average snowfall in January: 1.57"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Perth Amboy, NJ
- Average snowfall days in January: 5.8 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in January
Perth Amboy, NJ
- Average sea temperature in January: 41.7°F
The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.7°F).
Average daylight in January /
Average sunshine in January
Perth Amboy, NJ
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Perth Amboy, NJ
- Average sunshine days in January: 17.3 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in January
Perth Amboy, NJ
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Perth Amboy, NJ
- Average cloud cover in January: 45
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in January
Perth Amboy, NJ
- 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).
Perth Amboy, New Jersey, USA
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