December weather forecast
Riyadh, Saudi Arabia

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The Olaya street metro construction and cars in a traffic jam in the city of Riyadh, Saudi Arabia
The Olaya street metro construction and cars in a traffic jam in the city of Riyadh, Saudi Arabia

Weather in December

December exhibits the traditional winter weather of Riyadh, with temperatures hovering between 10.6°C (51.1°F) and 22.2°C (72°F). Diminishing daylight hours and a low UV index of 5 characterize the city's transition into its coldest period. This month brings a nostalgic reminder of the winter's start in January, creating a cyclical sense in the city's climatic rhythm. Precipitation inches upward to 15mm (0.59") over 6.3 days, marking December as one of the wetter months. However, it's the relative increase in rainfall rather than the absolute amount that highlights December in Riyadh's climate chronicles.

Temperature

In Riyadh, the average high-temperature in December drops from a warm 27.8°C (82°F) in November to an agreeable 22.2°C (72°F). In December, the recorded average low-temperature is a cool 10.6°C (51.1°F).

Humidity

January and December, with an average relative humidity of 47%, are the most humid months.

Rainfall

In Riyadh, in December, during 6.3 rainfall days, 15mm (0.59") of precipitation is typically accumulated. In Riyadh, during the entire year, the rain falls for 44.8 days and collects up to 93mm (3.66") of precipitation.

Daylight

December has the shortest days of the year, with an average of 10h and 36min of daylight.
On the first day of December, sunrise is at 06:20 and sunset at 17:03. On the last day of the month, sunrise is at 06:37 and sunset at 17:15 +03.

Sunshine

The months with the least sunshine in Riyadh are January and December, with an average of 6.9h of sunshine.

UV index

December is the month with the lowest UV index in Riyadh, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the UV index of 5 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Jan 25, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Riyadh in December?

The high-temperature, in December, in Riyadh, is 22.2°C (72°F), while the low-temperature averages to 10.6°C (51.1°F).

What is the most humid month in Riyadh?

January and December, with an average relative humidity of 47%, are most humid months.

What is the average humidity in December in Riyadh?

In December, the average relative humidity is 47%.

How much does it rain in Riyadh in December?

In Riyadh, during December, the rain falls for 6.3 days and regularly aggregates up to 15mm (0.59") of precipitation.

What is the month with the shortest days in Riyadh?

With an average of 10h and 36min of daylight, December has the shortest days of the year in Riyadh.

What is the average length of the day in December in Riyadh?

In Riyadh, the average day length in December is 10h and 38min.

When is the sunrise / sunset in December in Riyadh?

On the first day of December in Riyadh, sunrise is at 06:20 and sunset at 17:03. On the last day of the month, sunrise is at 06:37 and sunset at 17:15 +03.

What are the months with the least sunshine in Riyadh?

January and December, with an average of 6.9h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Riyadh?

In Riyadh, the average sunshine duration in December is 6.9h.

When is the lowest UV index in Riyadh?

December is the month with the lowest UV index, with an average maximum UV index of 5.

How high is the UV index in December in Riyadh?

The average daily maximum UV index in December in Riyadh, Saudi Arabia, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Riyadh, Saudi Arabia

Average temperature in December - Riyadh, Saudi Arabia
  • Average high temperature in December: 22.2°C

The warmest month (with the highest average high temperature) is August (43.6°C).
The month with the lowest average high temperature is January (20.2°C).

  • Average low temperature in December: 10.6°C

The month with the highest average low temperature is July (29.3°C).
The coldest month (with the lowest average low temperature) is January (9°C).

Average humidity in December
Riyadh, Saudi Arabia

Average humidity in December - Riyadh, Saudi Arabia
  • Average humidity in December: 47%

The months with the highest relative humidity are January and December (47%).
The month with the lowest relative humidity is July (10%).

Average rainfall in December
Riyadh, Saudi Arabia

Average rainfall in December - Riyadh, Saudi Arabia
  • Average rainfall in December: 14.6mm

The wettest month (with the highest rainfall) is April (23.8mm).
The driest months (with the least rainfall) are June, July and September (0mm).

Average rainfall days in December
Riyadh, Saudi Arabia

Average rainfall days in December - Riyadh, Saudi Arabia
  • Average rainfall days in December: 6.3 days

The month with the highest number of rainy days is April (11.3 days).
The months with the least rainy days are June and September (0 days).

Average daylight in December /
Average sunshine in December
Riyadh, Saudi Arabia

Average daylight in December / Average sunshine in December - Riyadh, Saudi Arabia
  • Average daylight in December: 10h and 4min

The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).

Average UV index in December
Riyadh, Saudi Arabia

Average UV index in December - Riyadh, Saudi Arabia
  • Average UV index in December: 5

The months with the highest UV index are April, May, June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 5).

Riyadh, Saudi Arabia

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