Muscat
Oman
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Muscat, Oman

A beautiful park outside the Grand Mosque Muscat, in Oman
A beautiful park outside the Grand Mosque Muscat, in Oman
The first month of the winter, December, is also a moderately hot month in Muscat, Oman, with temperature in the range of an average high of 27.1°C (80.8°F) and an average low of 18.9°C (66°F).

Temperature

In December, the average high-temperature slightly decreases, from a tropical 30.5°C (86.9°F) in November, to a moderately hot 27.1°C (80.8°F). In Muscat, the average low-temperature is 18.9°C (66°F).

Humidity

In Muscat, the average relative humidity is 65%.

Rainfall

In Muscat, during December, the rain falls for 2 days and regularly aggregates up to 13.3mm (0.5") of precipitation. Throughout the year, there are 10 rainfall days, and 100.3mm (3.9") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Muscat is 25.7°C (78.3°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

December has the shortest days of the year in Muscat, with an average of 10.7h of daylight.

Sunshine

With an average of 8.6h of sunshine, December has the least sunshine of the year in Muscat.

UV index

January and December, with an average maximum UV index of 6, are months with the lowest UV index in Muscat. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Muscat?

In Muscat, in December, the average high-temperature is 27.1°C (80.8°F), and the average low-temperature is 18.9°C (66°F).

What is the average humidity in December in Muscat?

In Muscat, the average relative humidity in December is 65%.

How much does it rain in Muscat in December?

In December, in Muscat, the rain falls for 2 days. Throughout December, 13.3mm (0.5") of precipitation is accumulated.

How warm is the water in December in Muscat?

In December, the average sea temperature in Muscat, Oman, is 25.7°C (78.3°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the shortest days in Muscat?

With an average of 10.7h of daylight, December has the shortest days of the year in Muscat.

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

In Muscat, the average length of the day in December is 10.7h.

What is the month with the least sunshine in Muscat?

With an average of 8.6h of sunshine, December has the least sunshine of the year in Muscat.

How long on average sun shines in December in Muscat?

In Muscat, the average sunshine in December is 8.6h.

What are the months with the lowest UV index in Muscat?

January and December, with an average maximum UV index of 6, are months with the lowest UV index in Muscat, Oman.

What is the UV index reading in December in Muscat?

The average daily maximum UV index in December in Muscat, Oman, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in December - Muscat, Oman
  • Average high temperature in December: 27.1°C

The warmest month (with the highest average high temperature) is June (40.4°C).
The month with the lowest average high temperature is January (25.5°C).

  • Average low temperature in December: 18.9°C

The month with the highest average low temperature is June (30.6°C).
The coldest month (with the lowest average low temperature) is January (17.3°C).

Average humidity in December - Muscat, Oman
  • Average humidity in December: 65%

The month with the highest relative humidity is August (67%).
The month with the lowest relative humidity is May (42%).

Average rainfall in December - Muscat, Oman
  • Average rainfall in December: 13.3mm

The wettest month (with the highest rainfall) is February (24.5mm).
The driest month (with the lowest rainfall) is September (0mm).

Average rainfall days in December - Muscat, Oman
  • Average rainfall days in December: 2 days

The month with the highest number of rainy days is February (3 days).
Months with the lowest number of rainy days are May, June, July, September, October and November (0 days).

Average sea temperature in December - Muscat, Oman
  • Average sea temperature in December: 25.7°C

The best month for swimming (with the highest average sea temperature) is June (31.6°C).
The coldest month (with the lowest average sea temperature) is February (23.3°C).

Average daylight in December / Average sunshine in December - Muscat, Oman
  • Average daylight in December: 10.7h

The month with the longest days is June (Average daylight: 13.6h).
The month with shortest days is December (Average daylight: 10.7h).

  • Average sunshine in December: 8.6h

The month with most sunshine is May (Average sunshine: 11.2h).
The month with least sunshine is December (Average sunshine: 8.6h).

Average UV index in December - Muscat, Oman
  • Average UV index in December: 6

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 6).