December weather forecastRío Alejandro, Panama
December
Weather in December
In the heart of the dry season, December hosts a unique set of weather patterns distinguishing it from the rest of the year in Río Alejandro. Markedly decreased rainfall renders this period drier, while the wind speed significantly amplifies, hitting 11.6km/h (7.2mph) up from 9.7km/h (6mph) in November. This month introduces a refreshing dry spell, with days steadily getting longer and sunnier. The noticeable decrease in the number of sunniest days from 3.6 in November to 3.3 in December marks late night starts. December crowns the year with its uniquely dry winds, signing off the year on a crisp, sunny note.Temperature
Río Alejandro's coldest month, December, generally records average temperatures ranging from a high of 27.8°C (82°F) to a low of 24.9°C (76.8°F).Heat index
During December, the heat index is evaluated at a tropical 32°C (89.6°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Humidity
In Río Alejandro, Panama, the average relative humidity in December is 84%.Rainfall
In Río Alejandro, during December, the rain falls for 25 days and regularly aggregates up to 89mm (3.5") of precipitation. In Río Alejandro, Panama, during the entire year, the rain falls for 266.8 days and collects up to 1014mm (39.92") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 36min of daylight.On the first day of December in Río Alejandro, Panama, sunrise is at 06:19 and sunset at 17:56. On the last day of the month, sunrise is at 06:34 and sunset at 18:10 EST.
Sunshine
The average sunshine in December is 6.3h.UV index
The months with the lowest UV index in Río Alejandro, Panama, are October 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 the ordinary person.Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. 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. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Río Alejandro, Panama
- Average high temperature in December: 27.8°C
The warmest month (with the highest average high temperature) is May (29.1°C).
The month with the lowest average high temperature is December (27.8°C).
- Average low temperature in December: 24.9°C
The month with the highest average low temperature is June (25.7°C).
The coldest months (with the lowest average low temperature) are January and February (24.8°C).
Average pressure in December
Río Alejandro, Panama
- Average pressure in December: 1010.1mbar
The month with the highest atmospheric pressure is March (1011.3mbar).
The months with the lowest atmospheric pressure are October and November (1009.6mbar).
Average wind speed in December
Río Alejandro, Panama
- Average wind speed in December: 11.6km/h
The windiest month (with the highest average wind speed) is March (15.8km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).
Average humidity in December
Río Alejandro, Panama
- Average humidity in December: 84%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (80%).
Average rainfall in December
Río Alejandro, Panama
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is July (144mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in December
Río Alejandro, Panama
- Average rainfall days in December: 25 days
The month with the highest number of rainy days is July (26.3 days).
The month with the least rainy days is February (15.2 days).
Average daylight in December /
Average sunshine in December
Río Alejandro, Panama
- Average daylight in December: 11h and 36min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in December: 6h and 18min
The month with the most sunshine is May (Average sunshine: 8h and 36min).
The month with the least sunshine is November (Average sunshine: 5h and 36min).
Average sunshine days in December
Río Alejandro, Panama
- Average sunshine days in December: 3.3 days
The month with the most sunshine days is March (9.6 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in December
Río Alejandro, Panama
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September and November (UV index 7).
The months with the lowest UV index are October and December (UV index 6).
Average cloud cover in December
Río Alejandro, Panama
- Average cloud cover in December: 55
The months with the most cloud cover are July and December (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 44).
Average visibility in December
Río Alejandro, Panama
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





