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 Juana Díaz, the lowest average temperatures are observed in January, with a high of 81°F (27.2°C) and a low of 71.2°F (21.8°C).Heat index
The heat index value for January is estimated at a tropical 86°F (30°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
In Juana Díaz, the average relative humidity in January is 79%.Rainfall
In Juana Díaz, during January, the rain falls for 16.2 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Juana Díaz, there are 249.1 rainfall days, and 28.82" (732mm) of precipitation is accumulated.Ocean temperature
In Juana Díaz, in January, the average water temperature is 80.1°F (26.7°C).Note: Swimming, diving, and other water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are highly enjoyable and provide prolonged comfort without unease.
Daylight
The average length of the day in January is 11h and 11min.On the first day of January, sunrise is at 6:57 am and sunset at 6:01 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:19 pm AST.
Sunshine
In January, the average sunshine is 9.1h.UV index
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 in January translates into these instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take note! The UV strength of the Sun elevates when reflected off water and sand.
Frequently asked questions
What part of the year is the coldest in Juana Díaz?
What is the usual temperature for Juana Díaz in January?
What is the average humidity in January in Juana Díaz?
How much does it rain in Juana Díaz in January?
What is the water temperature in January in Juana Díaz?
What is the average length of the day in January in Juana Díaz?
When are sunrise and sunset in January in Juana Díaz?
How long on average sun shines in January in Juana Díaz?
What are the months with the lowest UV index in Juana Díaz?
How high is the UV index in January in Juana Díaz?
Average temperature in January
Juana Díaz, PR
- Average high temperature in January: 81°F
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (81°F).
- Average low temperature in January: 71.2°F
The month with the highest average low temperature is August (76.6°F).
The coldest months (with the lowest average low temperature) are February and March (70.9°F).
Average pressure in January
Juana Díaz, PR
- Average pressure in January: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.01"Hg).
The months with the lowest atmospheric pressure are October and November (29.9"Hg).
Average wind speed in January
Juana Díaz, PR
- Average wind speed in January: 7mph
The windiest month (with the highest average wind speed) is July (8mph).
The calmest month (with the lowest average wind speed) is November (5.5mph).
Average humidity in January
Juana Díaz, PR
- Average humidity in January: 79%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is March (76%).
Average rainfall in January
Juana Díaz, PR
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in January
Juana Díaz, PR
- Average rainfall days in January: 16.2 days
The month with the highest number of rainy days is October (24.8 days).
The month with the least rainy days is February (15 days).
Average sea temperature in January
Juana Díaz, PR
- Average sea temperature in January: 80.1°F
The best month for swimming (with the highest average sea temperature) is September (85.3°F).
The coldest month (with the lowest average sea temperature) is March (79.3°F).
Average daylight in January /
Average sunshine in January
Juana Díaz, PR
- 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: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 54min).
Average sunshine days in January
Juana Díaz, PR
- Average sunshine days in January: 7.4 days
The month with the most sunshine days is March (7.6 days).
The month with the least sunshine days is October (2.6 days).
Average UV index in January
Juana Díaz, PR
- Average UV index in January: 6
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).
Average cloud cover in January
Juana Díaz, PR
- Average cloud cover in January: 27
The month with the most cloud cover is May (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 25).
Average visibility in January
Juana Díaz, PR
- 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).
Juana Díaz, Puerto Rico, USA
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