December signals the arrival of winter in
Yanbu. While still exhibiting a mild climate compared to many other parts of the world, Yanbu experiences a further drop in temperature. It greets the year-end with the highest rainfall in the year, marked at 12mm (0.47"), highlighting a significant increase in rainfall from the previous months. The days are shortest in December, with the city experiencing the longest nights. As the New Year looms, Yanbu residents brace themselves for the continuation of the wintery season that December introduces.
Temperature
The onset of December brings a small shift in high-temperatures, falling from a tropical 33.3°C (91.9°F) in
November to a moderately hot 29.6°C (85.3°F). The temperature notes a substantial fall from the daily peak to an average of 16.1°C (61°F) during December nights.
Heat index
During December, the heat index is calculated to be a hot 31°C (87.8°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In Yanbu, the average relative humidity in December is 56%.
Rainfall
December is the month with the most rainfall in Yanbu. Rain falls for 1.1 days and accumulates 12mm (0.47") of precipitation.
Daylight
December has the shortest days of the year in Yanbu, with an average of 10h and 42min of daylight.
On the first day of the month, sunrise is at 06:53 and sunset at 17:39. On the last day of December, sunrise is at 07:09 and sunset at 17:50 +03.