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
In Black River, the lowest average temperatures are observed in January, with a high of 27°C (80.6°F) and a low of 18.8°C (65.8°F).Heat index
During January, the heat index is estimated at a tropical 30°C (86°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In Black River, the average relative humidity in January is 83%.Rainfall
The month with the least rainfall is January, when the rain falls for 22.1 days and typically collects 56mm (2.2") of precipitation.Sea temperature
In Black River, Jamaica, the average seawater temperature in January is 27.1°C (80.8°F).Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.
Daylight
In Black River, the average length of the day in January is 11h and 11min.On the first day of January, sunrise is at 06:42 and sunset at 17:47. On the last day of the month, sunrise is at 06:44 and sunset at 18:05 EST.
Sunshine
The average sunshine in January in Black River, Jamaica, is 6.8h.UV index
In Black River, Jamaica, the average daily maximum UV index in January is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 6 in January translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days. Note! Reflective surfaces like sand and water heighten the UV radiation levels.
Frequently asked questions
What is the coldest month in Black River?
What are January temperatures in Black River?
What is the average humidity in January in Black River?
What is the driest month in Black River?
How much does it rain in Black River in January?
How warm is the water in January in Black River?
How many hours of daylight does Black River have in January?
What time are sunrise and sunset in January in Black River?
How long on average sun shines in January in Black River?
What is the UV index reading in January in Black River?
Average temperature in January
Black River, Jamaica
- Average high temperature in January: 27°C
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (27°C).
- Average low temperature in January: 18.8°C
The month with the highest average low temperature is August (21.9°C).
The coldest month (with the lowest average low temperature) is February (18.6°C).
Average pressure in January
Black River, Jamaica
- Average pressure in January: 1015.5mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).
Average wind speed in January
Black River, Jamaica
- Average wind speed in January: 7.5km/h
The windiest month (with the highest average wind speed) is June (9.4km/h).
The calmest month (with the lowest average wind speed) is November (6.2km/h).
Average humidity in January
Black River, Jamaica
- Average humidity in January: 83%
The month with the highest relative humidity is October (87%).
The months with the lowest relative humidity are March and July (81%).
Average rainfall in January
Black River, Jamaica
- Average rainfall in January: 56mm
The wettest month (with the highest rainfall) is October (228mm).
The driest month (with the least rainfall) is January (56mm).
Average rainfall days in January
Black River, Jamaica
- Average rainfall days in January: 22.1 days
The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is June (21.1 days).
Average sea temperature in January
Black River, Jamaica
- Average sea temperature in January: 27.1°C
The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).
Average daylight in January /
Average sunshine in January
Black River, Jamaica
- Average daylight in January: 11h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 6min).
Average sunshine days in January
Black River, Jamaica
- Average sunshine days in January: 5.6 days
The month with the most sunshine days is June (7.6 days).
The months with the least sunshine days are September and November (1.9 days).
Average UV index in January
Black River, Jamaica
- Average UV index in January: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in January
Black River, Jamaica
- Average cloud cover in January: 44
The months with the most cloud cover are May and November (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in January
Black River, Jamaica
- Average visibility in January: 7km
The months with the highest visibility are March, June, July and August (8km).
The months with the lowest visibility are November and December (6km).
Black River, Jamaica
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