December weather forecast
Jeddah, Saudi Arabia

In December, Jeddah embraces the charm of winter with even mild temperatures and an increase in rainfall to 13mm (0.51"). The year concludes by offering pleasant and less humid conditions compared to the hot, scorching summer months. While daylight hours decline, Jeddah still enjoys considerable amounts of sunshine during the day. As the year ends, residents and visitors can look forward to welcoming the new year with generally mild and comfortable weather conditions.

Temperature

Jeddah observes a minor difference in average high-temperatures between November's 33.5°C (92.3°F) and December's 30.7°C (87.3°F). In the month of December, Jeddah's average low-temperature falls to a pleasant 21°C (69.8°F).

Heat index

December's average heat index is estimated at a very hot 35°C (95°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. 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 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In December, the average relative humidity is 63%.

Rainfall

In Jeddah, in December, it is raining for 1 days, with typically 13mm (0.51") of accumulated precipitation. In Jeddah, during the entire year, the rain falls for 6 days and collects up to 61mm (2.4") of precipitation.

Sea temperature

In December, the average sea temperature in Jeddah is 27.8°C (82°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

The month with the shortest days in Jeddah, Saudi Arabia, is December, with an average of 10h and 54min of daylight.
On the first day of the month, sunrise is at 06:44 and sunset at 17:40. On the last day of December, in Jeddah, Saudi Arabia, sunrise is at 07:00 and sunset at 17:52 +03.

Sunshine

January and December, with an average of 7h of sunshine, are months with the least sunshine in Jeddah, Saudi Arabia.

UV index

With an average maximum UV index of 6, December is the month with the lowest UV index in Jeddah. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during December leads to these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Beware! Reflecting off water and sand, UV rays are much stronger.