December weather forecastRiyam, Oman
December
Weather in December
The first month of the winter, December, is still a warm month in Riyam, Oman, with an average temperature ranging between min 20.5°C (68.9°F) and max 24.7°C (76.5°F).Temperature
With the onset of December, Riyam experiences a modest temperature adjustment, with the average high-temperature gently receding from 28.1°C (82.6°F) in November to a still moderately hot 24.7°C (76.5°F). December records a small disparity from daytime temperatures, marking an average low-temperature of 20.5°C (68.9°F) in Riyam.Humidity
In Riyam, the average relative humidity in December is 57%.Rainfall
In Riyam, in December, during 2.5 rainfall days, 5mm (0.2") of precipitation is typically accumulated. In Riyam, during the entire year, the rain falls for 21.4 days and collects up to 43mm (1.69") of precipitation.Daylight
With an average of 10h and 42min of daylight, December has the shortest days of the year.On the first day of December in Riyam, sunrise is at 06:31 and sunset at 17:18. On the last day of the month, sunrise is at 06:47 and sunset at 17:30 +04.
Sunshine
The months with the least sunshine in Riyam are January and December, with an average of 7.5h of sunshine.UV index
The months with the lowest UV index in Riyam are January, February, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 6 suggests this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riyam, Oman
- Average high temperature in December: 24.7°C
The warmest month (with the highest average high temperature) is June (36.6°C).
The month with the lowest average high temperature is January (23.4°C).
- Average low temperature in December: 20.5°C
The month with the highest average low temperature is June (31.5°C).
The coldest month (with the lowest average low temperature) is January (19°C).
Average pressure in December
Riyam, Oman
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is January (1017.3mbar).
The month with the lowest atmospheric pressure is July (997.9mbar).
Average wind speed in December
Riyam, Oman
- Average wind speed in December: 9.7km/h
The windiest months (with the highest average wind speed) are February and May (11.6km/h).
The calmest months (with the lowest average wind speed) are September and October (9.5km/h).
Average humidity in December
Riyam, Oman
- Average humidity in December: 57%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is May (42%).
Average rainfall in December
Riyam, Oman
- Average rainfall in December: 5mm
The wettest month (with the highest rainfall) is June (8mm).
The driest month (with the least rainfall) is September (0mm).
Average rainfall days in December
Riyam, Oman
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is March (3.6 days).
The month with the least rainy days is September (0 days).
Average daylight in December /
Average sunshine in December
Riyam, 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 30min
The months with the most sunshine are May and August (Average sunshine: 12h and 18min).
The months with the least sunshine are January and December (Average sunshine: 7h and 30min).
Average sunshine days in December
Riyam, Oman
- Average sunshine days in December: 27.3 days
The months with the most sunshine days are September and October (30 days).
The month with the least sunshine days is February (26.2 days).
Average UV index in December
Riyam, Oman
- Average UV index in December: 6
The month with the highest UV index is May (UV index 9).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in December
Riyam, Oman
- Average cloud cover in December: 6
The month with the most cloud cover is March (Cloud cover 9).
The month with the least cloud cover is September (Cloud cover 2).
Average visibility in December
Riyam, 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).
