January weather forecast
Jayuya, PR

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Weather in January

The inaugural month of the year in Jayuya, Puerto Rico presents both warmth and a fair share of rainfall. January's weather, less humid than incoming February, possesses an average relative humidity of 79%. The mercury tends to oscillate between a daily high of 81°F (27.2°C) and low of 71.2°F (21.8°C), providing a comfortable warmth. Cloud cover is moderate, making room for roughly nine hours of sunshine out of about 11 daylight hours. The periodic gusts of wind, reaching to around 10.3mph (16.6km/h), bring an enjoyable coolness to the otherwise warm days.

Temperature

In Jayuya, January is the month with the lowest recorded average temperatures, measuring a high of 81°F (27.2°C) and a low of 71.2°F (21.8°C).

Heat index

For January, the heat index is calculated to be a tropical 86°F (30°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

The average relative humidity in January is 79%.

Rainfall

In Jayuya, during January, the rain falls for 16.2 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 249.1 rainfall days, and 28.82" (732mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 11h and 11min.
On the first day of the month, sunrise is at 6:57 am and sunset at 6:01 pm. On the last day of January, sunrise is at 6:59 am and sunset at 6:19 pm AST.

Sunshine

In Jayuya, the average sunshine in January 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 value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, the UV index of 6 transforms into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

What is the coldest month?

In Jayuya, January is the coldest month, with temperatures averaging a high of 81°F (27.2°C) and a low of 71.2°F (21.8°C).

What are the temperatures in January?

An average high-temperature, in January, in Jayuya, is 81°F (27.2°C) and the average low-temperature is 71.2°F (21.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in January is calculated to be 86°F (30°C).

What is the average humidity in January?

In Jayuya, the average relative humidity in January is 79%.

How many days does it rain in January?

In Jayuya, during January, the rain falls for 16.2 days and regularly aggregates up to 0.91" (23mm) of precipitation.

How many hours of daylight does Jayuya have in January?

The average day length in January is 11h and 11min.

What time are sunrise and sunset in January?

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.

How long on average sun shines in January?

The average sunshine duration in January is 9.1h.

What are the months with the lowest UV index?

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 6.

What is the UV index intensity in January?

In Jayuya, the average daily maximum UV index in January is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Jayuya, PR

Average temperature in January - Jayuya, 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
Jayuya, PR

Average pressure in January - Jayuya, 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
Jayuya, PR

Average wind speed in January - Jayuya, 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
Jayuya, PR

Average humidity in January - Jayuya, 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
Jayuya, PR

Average rainfall in January - Jayuya, 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
Jayuya, PR

Average rainfall days in January - Jayuya, 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 daylight in January /
Average sunshine in January
Jayuya, PR

Average daylight in January / Average sunshine in January - Jayuya, 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
Jayuya, PR

Average sunshine days in January - Jayuya, 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
Jayuya, PR

Average UV index in January - Jayuya, 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
Jayuya, PR

Average cloud cover in January - Jayuya, 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
Jayuya, PR

Average visibility in January - Jayuya, 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).

Jayuya, Puerto Rico, USA

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