Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With December's advent, Toa Alta sees an average high-temperature of a still warm 81°F (27.2°C), subtly shifted from November's 83.1°F (28.4°C). In Toa Alta, December nights maintain a consistent temperature, with an average low of 75.2°F (24°C).Heat index
For December, the heat index is computed to be a tropical 86°F (30°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.Note that heat index values are valued for light wind and location in the shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In December, the average relative humidity is 78%.Rainfall
In Toa Alta, in December, it is raining for 17.5 days, with typically 1.61" (41mm) of accumulated precipitation. In Toa Alta, Puerto Rico, during the entire year, the rain falls for 223.5 days and collects up to 27.95" (710mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 0min of daylight.On the first day of December in Toa Alta, sunrise is at 6:41 am and sunset at 5:47 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 5:59 pm AST.
Sunshine
The average sunshine in December in Toa Alta is 6.8h.UV index
The months with the lowest UV index in Toa Alta are January through April and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 6 in December leads to these guidelines:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the temperature in December in Toa Alta?
What is the average humidity in December in Toa Alta?
How much does it rain in Toa Alta in December?
What is the month with the shortest days in Toa Alta?
What is the average length of the day in December in Toa Alta?
When are sunrise and sunset in December in Toa Alta?
How long on average sun shines in December in Toa Alta?
When is the lowest UV index in Toa Alta?
What is the UV index intensity in December in Toa Alta?
Average temperature in December
Toa Alta, PR
- Average high temperature in December: 81°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (79.9°F).
- Average low temperature in December: 75.2°F
The months with the highest average low temperature are August, September and October (78.4°F).
The coldest month (with the lowest average low temperature) is March (73°F).
Average pressure in December
Toa Alta, PR
- Average pressure in December: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).
Average wind speed in December
Toa Alta, PR
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is July (10mph).
The calmest month (with the lowest average wind speed) is October (6.8mph).
Average humidity in December
Toa Alta, PR
- Average humidity in December: 78%
The months with the highest relative humidity are May, June, July and November (79%).
The month with the lowest relative humidity is March (76%).
Average rainfall in December
Toa Alta, PR
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is October (3.82").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in December
Toa Alta, PR
- Average rainfall days in December: 17.5 days
The month with the highest number of rainy days is October (24 days).
The months with the least rainy days are January and February (14.2 days).
Average daylight in December /
Average sunshine in December
Toa Alta, PR
- Average daylight in December: 11h and 0min
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 0min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are May and June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in December
Toa Alta, PR
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is January (9.8 days).
The months with the least sunshine days are October and November (3.5 days).
Average UV index in December
Toa Alta, PR
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April and December (UV index 6).
Average cloud cover in December
Toa Alta, PR
- Average cloud cover in December: 33
The months with the most cloud cover are May, July and November (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 26).
Average visibility in December
Toa Alta, PR
- Average visibility in December: 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).
Toa Alta, Puerto Rico, USA
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