December weather forecastAr Rustaq, Oman
December
Weather in December
December signifies the dawn of winter in Ar Rustaq, Oman, exhibiting even cooler temperatures and marginally higher cloud cover. The barometric pressure increases back up to its yearly high of 1017.2mb, bringing consistency to the weather pattern. The transition into the new year witnesses a continuation of the cool weather, albeit with a slight reduction in daylight hours to 10.7. Despite the cooling trend, 7.6 daylight hours are still generously washed in sunlight, ensuring ample room for outdoor pursuits.Temperature
December ushers in a minute temperature change, with average high-temperatures reducing from November's warm 26.3°C (79.3°F) to a still moderately hot 23.1°C (73.6°F). An average temperature of 13.8°C (56.8°F) marks the nights in December.Humidity
In Ar Rustaq, the average relative humidity in December is 49%.Rainfall
In Ar Rustaq, during December, the rain falls for 3.5 days and regularly aggregates up to 5mm (0.2") of precipitation. Throughout the year, there are 47.9 rainfall days, and 113mm (4.45") of precipitation is accumulated.Daylight
With an average of 10h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:35 and sunset at 17:23. On the last day of December, in Ar Rustaq, sunrise is at 06:51 and sunset at 17:34 +04.
Sunshine
In December, the average sunshine is 7.6h.UV index
January and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 5 in December transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ar Rustaq, Oman
- Average high temperature in December: 23.1°C
The warmest month (with the highest average high temperature) is June (39.1°C).
The month with the lowest average high temperature is January (22°C).
- Average low temperature in December: 13.8°C
The month with the highest average low temperature is July (28.3°C).
The coldest month (with the lowest average low temperature) is January (12°C).
Average pressure in December
Ar Rustaq, Oman
- Average pressure in December: 1017.2mbar
The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is July (998.4mbar).
Average wind speed in December
Ar Rustaq, Oman
- Average wind speed in December: 4.6km/h
The windiest month (with the highest average wind speed) is June (7km/h).
The calmest month (with the lowest average wind speed) is November (4.4km/h).
Average humidity in December
Ar Rustaq, Oman
- Average humidity in December: 49%
The month with the highest relative humidity is January (50%).
The month with the lowest relative humidity is May (23%).
Average rainfall in December
Ar Rustaq, Oman
- Average rainfall in December: 5mm
The wettest month (with the highest rainfall) is August (18mm).
The driest month (with the least rainfall) is September (1mm).
Average rainfall days in December
Ar Rustaq, Oman
- Average rainfall days in December: 3.5 days
The months with the highest number of rainy days are July and August (7.2 days).
The month with the least rainy days is September (1.6 days).
Average daylight in December /
Average sunshine in December
Ar Rustaq, Oman
- Average daylight in December: 10h and 42min
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 42min).
- Average sunshine in December: 7h and 36min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in December
Ar Rustaq, Oman
- Average sunshine days in December: 27.4 days
The month with the most sunshine days is September (28.1 days).
The month with the least sunshine days is August (22.5 days).
Average UV index in December
Ar Rustaq, Oman
- Average UV index in December: 5
The months with the highest UV index are April, May, June, July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in December
Ar Rustaq, Oman
- Average cloud cover in December: 8
The month with the most cloud cover is July (Cloud cover 13).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in December
Ar Rustaq, Oman
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
