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 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
Rock River's coldest temperatures are experienced in January, with average high temperatures of 27.8°C (82°F) and lows of 20°C (68°F).Heat index
In January, the heat index is calculated to be a hot 32°C (89.6°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
The average relative humidity in January in Rock River is 81%.Rainfall
January is the month with the least rainfall in Rock River. Rain falls for 20.5 days and accumulates 33mm (1.3") of precipitation.Daylight
The average length of the day in January in Rock River, Jamaica, is 11h and 11min.On the first day of the month, sunrise is at 06:40 and sunset at 17:44. On the last day of January, sunrise is at 06:41 and sunset at 18:02 EST.
Sunshine
In January, the average sunshine is 7.3h.UV index
January through April, September through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 6 during January translates into the following guidance:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the coldest month in Rock River?
What are the temperatures in Rock River in January?
What is the average humidity in January in Rock River?
What is the driest month in Rock River?
How many days does it rain in January in Rock River?
What is the average length of the day in January in Rock River?
What time are sunrise and sunset in January in Rock River?
How many hours of sunshine does Rock River have in January?
What are the months with the lowest UV index in Rock River?
What is the UV index intensity in January in Rock River?
Average temperature in January
Rock River, Jamaica
- Average high temperature in January: 27.8°C
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (27.8°C).
- Average low temperature in January: 20°C
The months with the highest average low temperature are July and August (23.3°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).
Average pressure in January
Rock River, Jamaica
- Average pressure in January: 1015.4mbar
The month with the highest atmospheric pressure is January (1015.4mbar).
The month with the lowest atmospheric pressure is October (1011.4mbar).
Average wind speed in January
Rock River, Jamaica
- Average wind speed in January: 8.3km/h
The windiest month (with the highest average wind speed) is June (10.3km/h).
The calmest month (with the lowest average wind speed) is November (6.9km/h).
Average humidity in January
Rock River, Jamaica
- Average humidity in January: 81%
The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is July (78%).
Average rainfall in January
Rock River, Jamaica
- Average rainfall in January: 33mm
The wettest month (with the highest rainfall) is October (147mm).
The driest month (with the least rainfall) is January (33mm).
Average rainfall days in January
Rock River, Jamaica
- Average rainfall days in January: 20.5 days
The month with the highest number of rainy days is October (27.5 days).
The month with the least rainy days is June (20.1 days).
Average daylight in January /
Average sunshine in January
Rock 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: 7h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The months with the least sunshine are October and December (Average sunshine: 6h and 54min).
Average sunshine days in January
Rock River, Jamaica
- Average sunshine days in January: 5.3 days
The month with the most sunshine days is July (7.5 days).
The month with the least sunshine days is October (2.3 days).
Average UV index in January
Rock River, Jamaica
- Average UV index in January: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 6).
Average cloud cover in January
Rock River, Jamaica
- Average cloud cover in January: 30
The month with the most cloud cover is June (Cloud cover 36).
The months with the least cloud cover are March, July, August, September and December (Cloud cover 29).
Average visibility in January
Rock River, Jamaica
- Average visibility in January: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September and November (9km).
The months with the lowest visibility are January, October and December (8km).
Rock River, Jamaica
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