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December Weather in Riah, Morocco

Last updated: August 28, 2025

In December, the average temperature in Riah, Morocco is a pleasant 13°C (56°F), with daytime highs reaching up to 27°C (80°F) and the occasional cool dip to 3°C (37°F). Expect about 28 mm (1.1 in) of precipitation spread over 4 days, resulting in an average humidity of 70%. Whether you're enjoying the mild weather or preparing for some occasional rain, this month's climate brings a refreshing blend of comfort and adventure!

December Temperature in Riah

In December in Riah, the average temperature is 13°C (56°F). Maximums can reach 27°C (80°F), while minimums can dip as low as 3°C (37°F). Be prepared for a mix of mild days and cooler nights when traveling during this time.

December Weather in Riah: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Riah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riah, December typically has an average temperature of 13°C (56°F), with highs reaching up to 27°C (80°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec535759626871757674696156
Data source: Temperature data for Riah generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Riah

In Riah in December, the precipitation amount is 28 mm (1.1 in) over the course of 4 days.

December Precipitation Trends in Riah

The chart displays monthly precipitation patterns in Riah, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Riah, December typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec31424733174118233828
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Riah

In Riah in December humidity is 70%. With an average temperature of 13°C (56°F), this humidity feels like a chilly embrace, making travel feel a bit damp and heavy. Be prepared for a refreshing yet cool atmosphere that might surprise you as you explore the sights.

December Average Humidity in Riah

This chart illustrates the average monthly humidity levels in Riah, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Riah is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%65%67%64%67%68%74%70%72%70%71%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Riah

In Riah in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Riah for better planning.

Maximum UV Index Levels in Riah for December

The chart shows the monthly maximum UV Index (UVI) for Riah in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Riah typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec45891112111010754
Data source: Riah December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Riah Compares to Other Months

Weather in Riah varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Riah, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Riah, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)31 mm (1.2 inches)68%moderate
February Weather14°C (57°F)42 mm (1.7 inches)65%moderate
March Weather15°C (59°F)47 mm (1.9 inches)67%very high
April Weather17°C (63°F)33 mm (1.3 inches)64%very high
May Weather20°C (68°F)17 mm (0.7 inches)67%extreme
June Weather22°C (71°F)4 mm (0.1 inches)68%extreme
July Weather24°C (75°F)1 mm (0.0 inches)74%extreme
August Weather25°C (77°F)1 mm (0.0 inches)70%very high
September Weather23°C (74°F)8 mm (0.3 inches)72%very high
October Weather21°C (69°F)23 mm (0.9 inches)70%high
November Weather16°C (61°F)38 mm (1.5 inches)71%moderate
December Weather13°C (56°F)28 mm (1.1 inches)70%moderate

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