December weather forecastPenonome, Panama
December
Weather in December
December in Penonome, Panama signals the end of the year with a significant reduction in rainfall and slightly cooler nights. Weather changes become more evident, as the days tend to shorten drastically with the approaching winter solstice. The frequency of rainfall sees a substantial drop, hierarchizing it as one of the driest months. December weather features temperatures fluctuating from highs of 29.4°C (84.9°F) to lows of 22.3°C (72.1°F) and ends the year with a reduced rainfall, amounting to 55mm (2.17").Temperature
The arrival of December sees a recorded average high-temperature of a still moderately hot 29.4°C (84.9°F), showing little divergence from the previous month's conditions. During the month of December, an average temperature of 22.3°C (72.1°F) is noted during the nights.Heat index
During December, the heat index is estimated at a fiery hot 36°C (96.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
The average relative humidity in December is 82%.Rainfall
In Penonome, in December, it is raining for 18.4 days, with typically 55mm (2.17") of accumulated precipitation. Throughout the year, there are 247.4 rainfall days, and 1423mm (56.02") of precipitation is accumulated.Daylight
December has the shortest days of the year in Penonome, with an average of 11h and 36min of daylight.On the first day of the month, sunrise is at 06:20 and sunset at 18:00. On the last day of December, sunrise is at 06:35 and sunset at 18:13 EST.
Sunshine
In December, the average sunshine is 8.3h.UV index
The months with the lowest UV index are July through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 6 turns into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Penonome, Panama
- Average high temperature in December: 29.4°C
The warmest month (with the highest average high temperature) is April (32.3°C).
The months with the lowest average high temperature are October and November (29.3°C).
- Average low temperature in December: 22.3°C
The month with the highest average low temperature is May (23.8°C).
The coldest months (with the lowest average low temperature) are January and December (22.3°C).
Average pressure in December
Penonome, Panama
- Average pressure in December: 1010.1mbar
The months with the highest atmospheric pressure are January and March (1010.8mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in December
Penonome, Panama
- Average wind speed in December: 11.4km/h
The windiest months (with the highest average wind speed) are February and March (15.1km/h).
The calmest month (with the lowest average wind speed) is September (5.3km/h).
Average humidity in December
Penonome, Panama
- Average humidity in December: 82%
The month with the highest relative humidity is October (88%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Penonome, Panama
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is August (228mm).
The driest month (with the least rainfall) is February (7mm).
Average rainfall days in December
Penonome, Panama
- Average rainfall days in December: 18.4 days
The month with the highest number of rainy days is October (28.9 days).
The month with the least rainy days is February (6.1 days).
Average daylight in December /
Average sunshine in December
Penonome, Panama
- Average daylight in December: 11h and 36min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 8h and 18min
The months with the most sunshine are January and February (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 5h and 42min).
Average sunshine days in December
Penonome, Panama
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is March (19 days).
The month with the least sunshine days is October (1.7 days).
Average UV index in December
Penonome, Panama
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May and June (UV index 7).
The months with the lowest UV index are July, August, September, October, November and December (UV index 6).
Average cloud cover in December
Penonome, Panama
- Average cloud cover in December: 39
The month with the most cloud cover is October (Cloud cover 56).
The month with the least cloud cover is February (Cloud cover 27).
Average visibility in December
Penonome, Panama
- Average visibility in December: 8km
The months with the highest visibility are February, March and April (10km).
The month with the lowest visibility is October (6km).





