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
January
Weather in January
Temperature
Puerto Rico witnesses the coldest weather in January, with temperatures averaging a high of 29.2°C (84.6°F) and a low of 22.3°C (72.1°F).Heat index
The heat index value during January is computed to be a torrid 38°C (100.4°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In January, the average relative humidity is 89%.Rainfall
In January, the rain falls for 29 days. Throughout January, 190mm (7.48") of precipitation is accumulated. Throughout the year, there are 233.4 rainfall days, and 1251mm (49.25") of precipitation is accumulated.Daylight
In January, the average length of the day is 12h and 41min.On the first day of January, sunrise is at 06:10 and sunset at 18:56. On the last day of the month, sunrise is at 06:25 and sunset at 19:01 -04.
Sunshine
In January, the average sunshine is 6h.UV index
January through June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 6 suggests these recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How hot is it in January?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Puerto Rico have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Puerto Rico have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Puerto Rico, Bolivia
- Average high temperature in January: 29.2°C
The warmest month (with the highest average high temperature) is September (35.5°C).
The month with the lowest average high temperature is January (29.2°C).
- Average low temperature in January: 22.3°C
The month with the highest average low temperature is September (23.1°C).
The coldest month (with the lowest average low temperature) is July (19.7°C).
Average pressure in January
Puerto Rico, Bolivia
- Average pressure in January: 1010mbar
The month with the highest atmospheric pressure is July (1013.5mbar).
The month with the lowest atmospheric pressure is November (1008.2mbar).
Average wind speed in January
Puerto Rico, Bolivia
- Average wind speed in January: 4.7km/h
The windiest month (with the highest average wind speed) is August (5.1km/h).
The calmest month (with the lowest average wind speed) is May (4.2km/h).
Average humidity in January
Puerto Rico, Bolivia
- Average humidity in January: 89%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is August (54%).
Average rainfall in January
Puerto Rico, Bolivia
- Average rainfall in January: 190mm
The wettest month (with the highest rainfall) is February (200mm).
The driest month (with the least rainfall) is July (11mm).
Average rainfall days in January
Puerto Rico, Bolivia
- Average rainfall days in January: 29 days
The month with the highest number of rainy days is January (29 days).
The month with the least rainy days is August (6 days).
Average daylight in January /
Average sunshine in January
Puerto Rico, Bolivia
- Average daylight in January: 12h and 4min
The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in January: 6h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in January
Puerto Rico, Bolivia
- Average sunshine days in January: 1.5 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is January (1.5 days).
Average UV index in January
Puerto Rico, Bolivia
- Average UV index in January: 6
The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).
Average cloud cover in January
Puerto Rico, Bolivia
- Average cloud cover in January: 69
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in January
Puerto Rico, Bolivia
- Average visibility in January: 6km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is February (5km).
