December Weather in Muscat, Oman

Last updated: August 31, 2025

December in Muscat, Oman offers a delightful climate that blends mild temperatures with low humidity. With maximums reaching around 31°C (88°F) and average temperatures hovering at 22°C (72°F), it's an ideal time for outdoor activities. Nights cool down to a refreshing 14°C (57°F), providing comfortable evenings. While rainfall is minimal, with only about 11 mm (0.4 in) expected over one day, the atmosphere remains pleasantly dry, maintaining an average humidity of 49%. This combination makes December a truly enjoyable month to experience the beauty and culture of Muscat.

December Temperature in Muscat

In December, Muscat experiences a delightful shift in temperatures as the year winds down. With minimums averaging 14°C (57°F) and maximums reaching up to 31°C (88°F), the climate is pleasantly mild, making it a perfect time for outdoor adventures. The average temperature hovers around 22°C (72°F), providing a comfortable backdrop for exploring the city's stunning architecture and beautiful coastline. Compared to the preceding months, December marks a refreshing decline from the extreme heat of summer, offering residents and visitors alike a much-needed respite while still maintaining plenty of pleasant sunshine. This transitional month sets the stage for an enjoyable Omani winter, inviting all to bask in its charm.

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

The chart illustrates December temperature patterns in Muscat, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Muscat, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec697278879396959290857771
Data source: Temperature data for Muscat generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Muscat

December in Muscat, Oman, experiences a modest return of precipitation, with 11 mm (0.4 in) recorded over just one day. This amount mirrors January's totals, marking the end of the year with a slight uptick in rainfall after the dry summer months. Throughout the year, precipitation has been sparse, with only a handful of rainy days from June to November. The month of December serves as a gentle reminder of the region's capability for rain, contrasting the long dry spells that dominate the summer, while remaining consistent with the earlier winter months. As the year wraps up, Muscat's climate highlights a unique rhythm where rain makes fleeting appearances, offering a refreshing change for its residents and visitors alike.

December Precipitation Trends in Muscat

The chart displays monthly precipitation patterns in Muscat, 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 Muscat, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec116535010010911
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Muscat

In Muscat, Oman, December ushers in a humidity level of 49%, which mirrors the slightly elevated conditions often experienced throughout the summer months. This figure represents a subtle decline from November's 51%, yet it remains consistently higher than the drier early months of the year, where humidity levels dipped to their lowest in April at 42%. As the year winds down, the humidity is notably influenced by the seasonal transitions, showing that while December maintains a relative humidity comparable to the summer's closing months, it does not reach the heights observed in late autumn. Overall, this trend emphasizes Muscat's unique climate, where a blend of arid conditions and humid spells come together, particularly in the vibrant year-end atmosphere.

December Average Humidity in Muscat

This chart illustrates the average monthly humidity levels in Muscat, 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 Muscat is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec48%46%43%42%47%46%48%49%49%54%51%50%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Muscat

In December, Muscat, Oman experiences a UV Index of 7, indicating a high exposure category that requires some caution. As the year winds down, this month mirrors the UV levels of January and November, with a burn time of approximately 25 minutes for unprotected skin. The trend throughout the year showcases a notable increase in UV intensity, peaking at 12 in May and July, reflecting the extreme sun exposure typical of the region during summer months. As winter approaches, temperatures drop slightly, yet the UV risk remains significant, reminding residents and visitors alike to stay vigilant. For more details on the UV Index trends throughout the year, visit Muscat UV Index.

Maximum UV Index Levels in Muscat for December

The chart shows the monthly maximum UV Index (UVI) for Muscat 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 Muscat typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec7811111211121111977
Data source: Muscat 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.

December Sunshine in Muscat

December in Muscat, Oman, is a delightful continuation of the year’s radiant sunlit journey, boasting an impressive 310 hours of sunshine. This month captures the essence of the cooler season, perfectly blending warm days with comfortable temperatures, making it a favorite among both locals and tourists. As the year winds down, sunlight hours begin to taper slightly from the peak experienced in May and June, yet still offer ample opportunity for outdoor adventures. December's sunshine, nestled between November's 308 hours and January's 253 hours, invites visitors to soak in the gentle warmth and vibrant atmosphere of this beautiful coastal city, creating a perfect backdrop for exploration and relaxation alike.

Monthly Sunshine Duration in Muscat: December Highlighted

The December sunshine duration represents the total number of hours Muscat experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec253h294h337h343h371h367h365h348h334h334h308h310h
Data source: Muscat December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Muscat During December

In Muscat, Oman, December welcomes a decent 76% chance of sunshine, marking a shift from the sun-soaked summer months. This probability sits comfortably above several other months, particularly the warmer periods of July and August, where sunshine is less guaranteed. Notably, the transition from autumn to winter sees a trend of moderate sun exposure, with November boasting an impressive 96% chance before December's slight dip. Overall, while the prospect of sunny skies in December may not be as high as in the peak summer months, the likelihood remains favorable for sun-seekers enjoying Muscat's mild winter weather.

Percentage of Sunny Days in December in Muscat

The chart illustrates the percentage of sunny days in Muscat throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Muscat experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec98%83%96%80%82%99%68%88%74%88%96%76%
Data source: Muscat December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Muscat in December

In Muscat, Oman, the trend in daylight duration reflects the rhythmic dance of the changing seasons. Starting the year with a modest 10 hours of daylight in January, the city gradually welcomes more sunlight, peaking at 13 hours from May through July. As summer wanes, daylight begins to recede, dipping back to 12 hours in August and September, before settling back to 11 hours in October. By the time December arrives, Muscat returns to 10 hours of daylight, mirroring the daylight lengths of the previous January. This cyclical pattern highlights the region's distinct seasonal fluctuations, offering residents and visitors alike a unique experience of light and shadow throughout the year.

Average Daylight Hours in Muscat for December

The chart illustrates the variation in daylight duration in Muscat throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 51m11h 21m12h 1m12h 42m13h 16m13h 32m13h 24m12h 54m12h 15m11h 34m10h 59m10h 41m
Data source: Muscat daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Muscat

As December rolls into Muscat, the air cools gently, bringing an average wind speed of 2.2 m/s (5 mph), slightly lower than the preceding months. Throughout the year, the wind in Muscat exhibits a subtle but noticeable trend: starting from a calm 2.3 m/s in January and February, it gradually picks up, reaching a peak of 3.3 m/s in July. This pattern mirrors the city’s transition from winter to summer, with the winds becoming brisker as temperatures rise. By December, the wind settles back into its tranquil rhythm, inviting a reflective ambiance that complements the serene winter evenings. This consistent yet dynamic wind pattern reveals the enchanting nature of Muscat's climate, offering both solace and a gentle breeze as the year draws to a close.

Average December Wind Speed in Muscat

The chart displays monthly wind speed patterns in Muscat, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.32.72.72.82.63.32.42.32.42.42.2 m/s
Data source: Muscat December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Muscat Compares to Other Months

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

In December, temperatures in Muscat range from a minimum of 14°C (57°F) to a maximum of 31°C (88°F), with an average of 22°C (72°F). The month experiences minimal rainfall, with only 11 mm (0.4 in) over one day and humidity levels at 49%. In contrast, January sees slightly cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 30°C (86°F), while maintaining a similar average of 21°C (70°F). The precipitation remains consistent at 11 mm (0.4 in) over one day, but humidity dips slightly to 48%. For more details, check Muscat weather in January.

In December, temperatures in Muscat typically range from a minimum of 14°C (57°F) to a maximum of 31°C (88°F), with an average temperature of 22°C (72°F). The month experiences minimal precipitation, receiving only 11 mm (0.4 in) over just one rainy day, and humidity levels hover around 49%. In contrast, February sees slightly cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 32°C (89°F), maintaining the same average of 22°C (72°F). Precipitation is even lower at 6 mm (0.2 in) across just one day, and the humidity decreases slightly to 46%. For more specific weather details, check Muscat weather in February.

December and March in Muscat exhibit notable differences in weather patterns. December tends to be slightly cooler, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 31°C (88°F), while March showcases warmer conditions, with temperatures starting at 16°C (62°F) and peaking at 38°C (100°F). Both months experience minimal precipitation, with December receiving 11 mm (0.4 in) and March 5 mm (0.2 in), though both have similar low rainfall days of just one. Interestingly, humidity levels are relatively consistent, with December at 49% and March slightly lower at 43%. For more details, check out Muscat weather in March.

In December, the weather in Muscat features a milder temperature range, with a minimum of 14°C (57°F), an average of 22°C (72°F), and a maximum of 31°C (88°F). With only 11 mm (0.4 in) of precipitation over just one day, the humidity hovers around 49%, creating a comfortable, albeit slightly humid, atmosphere. In contrast, April experiences significantly warmer temperatures, with a minimum of 21°C (70°F), an average of 30°C (87°F), and a scorching maximum of 40°C (104°F). The month sees very little rain, with just 3 mm (0.1 in) and no recorded rainy days, making it drier and less humid at 42%. For more detailed information, you can check Muscat weather in April.

December and May present contrasting weather conditions in Muscat. In December, temperatures range from a mild 14°C (57°F) at night to a comfortable average of 22°C (72°F) during the day, with maximums reaching 31°C (88°F). The month experiences low precipitation levels at just 11 mm (0.4 in) over a day, accompanied by moderate humidity at 49%. In stark contrast, May showcases significantly warmer temperatures, with nighttime lows of 26°C (79°F) and daytime averages soaring to 34°C (93°F), peaking at a sweltering 44°C (112°F). Additionally, May sees even less rainfall, totaling only 5 mm (0.2 in) across a similar one-day occurrence, with humidity slightly lower at 47%. For more detailed insights, check out Muscat weather in May.

In December, Muscat enjoys pleasant weather, with temperatures ranging from a mild 14°C (57°F) at night to a comfortable average of 22°C (72°F) during the day, peaking at a warm 31°C (88°F). The month sees minimal precipitation, with only 11 mm (0.4 in) of rain over just one day, contributing to a moderate humidity level of 49%. In contrast, June experiences significantly higher temperatures, with nighttime lows of 29°C (85°F) and daytime averages soaring to 35°C (96°F), reaching extreme highs of 44°C (112°F). June is characterized by its dryness, with no recorded precipitation and a slightly lower humidity at 46%. For a closer look at the weather patterns, you can visit Muscat weather in June.

In December, Muscat experiences milder temperatures, with a minimum of 14°C (57°F) and an average of 22°C (72°F), while highs can reach 31°C (88°F). The month sees minimal precipitation, totaling just 11 mm (0.4 in) over one day, and humidity levels are relatively comfortable at 49%. In contrast, July brings significantly hotter conditions, with temperatures soaring to a minimum of 29°C (84°F) and an average of 35°C (95°F), peaking at a scorching 44°C (111°F). Notably, July is remarkably dry, receiving just 1 mm (0.0 in) of rain across the entire month with zero days of rainfall, and humidity remains similar at 48%. For more details, check out Muscat weather in July.

In December, the weather in Muscat is considerably milder compared to August. With temperatures ranging from a minimum of 14°C (57°F) to a maximum of 31°C (88°F), December offers a more comfortable climate, characterized by an average of 22°C (72°F) and minimal precipitation of just 11 mm over one day. In contrast, August sees much hotter conditions, featuring a minimum of 27°C (81°F) and soaring to a maximum of 41°C (106°F), with an average temperature of 33°C (92°F) and no rainfall at all. Both months share similar humidity levels at 49%, but the stark difference in temperature and precipitation makes December much more pleasant for outdoor activities. For more details on August weather patterns, visit Muscat weather in August.

The weather in December is notably milder compared to September, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 31°C (88°F). In contrast, September experiences a much hotter climate, with temperatures reaching as high as 42°C (107°F) and an average of 32°C (90°F). Additionally, December sees some precipitation, albeit minimal at 11 mm over just one day, while September boasts completely dry conditions with no recorded rainfall. Despite the differences in temperature and precipitation, both months maintain a similar humidity level of 49%. For more detailed weather data on September, you can check Muscat weather in September.

When comparing December and October weather, October appears to be hotter overall, with an average temperature of 29°C (85°F) and maximums reaching up to 37°C (100°F). In contrast, December's temperatures are milder, ranging from a minimum of 14°C (57°F) to a maximum of 31°C (88°F), which may be more comfortable for outdoor activities. Both months experience similar precipitation levels, with October slightly higher at 10 mm (0.4 in) compared to December's 11 mm (0.4 in), but both months have only one rainy day. Furthermore, October tends to be more humid at 54%, while December's humidity drops to 49%. For more detailed information, you can check out Muscat weather in October.

Comparing the weather between November and December reveals some notable differences. In November, temperatures are generally higher, with a minimum of 17°C (63°F) and an average of 25°C (78°F), reaching a maximum of 34°C (93°F). This month also has no recorded precipitation, contributing to a slightly higher humidity level of 51%. In contrast, December experiences cooler temperatures, with a minimum of 14°C (57°F), an average of 22°C (72°F), and a maximum of 31°C (88°F). While December sees a slight increase in precipitation to 11 mm (0.4 inches) over just one day, humidity drops to 49%. For more details on November weather patterns, check out Muscat weather in November.

Compare Muscat's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Muscat

As December rolls into Muscat, residents and visitors alike can savor a delightful shift in weather compared to the hotter months. The mild temperatures create a pleasant atmosphere, making it ideal for outdoor activities, with averages ranging comfortably in the low twenties. Unlike the oppressive heat of summer, December experiences a significant drop in humidity, hovering around 49%, which further enhances the enjoyment of the season. Rain is a rare guest, with only a single day of precipitation, totaling a mere 11 mm, ensuring that sunny days dominate the landscape. This refreshing climate invites travelers to explore the city's rich culture and stunning scenery. For more insights into what you can expect throughout the year, be sure to check out Muscat Climate.