December weather forecast
Umm Lajj, Saudi Arabia

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Weather in December

December invites the mild but beautiful winter season to Umm Lajj. The city begins to cool firmly, ensuring a comfortable end to the year as the temperatures continue their downward spiral. The change in weather is accompanied by a palpable drop in daylight hours when compared to those of November. The decrease in humidity percentage suggests the onset of drier conditions. The peak temperature continues on the cooling trend from November and moderately sits at 27.1°C (80.8°F).

Temperature

Start of December brings a slight shift in the average high-temperature, dipping a bit from November's hot 30.1°C (86.2°F) to a moderately hot 27.1°C (80.8°F). During the nights in December, the temperature in Umm Lajj averages to a pleasant 21.3°C (70.3°F).

Heat index

The average heat index in December is calculated to be 27°C (80.6°F). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
The standards for the heat index are set for locations in shade and under light breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

In Umm Lajj, the average relative humidity in December is 46%.

Rainfall

In Umm Lajj, in December, it is raining for 2.5 days, with typically 7mm (0.28") of accumulated precipitation. In Umm Lajj, during the entire year, the rain falls for 17 days and collects up to 47mm (1.85") of precipitation.

Sea temperature

In Umm Lajj, in December, the average water temperature is 26.2°C (79.2°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.

Daylight

The month with the shortest days is December, with an average of 10h and 36min of daylight.
On the first day of the month, sunrise is at 06:59 and sunset at 17:40. On the last day of December, sunrise is at 07:15 and sunset at 17:52 +03.

Sunshine

The months with the least sunshine are November and December, with an average of 7.6h of sunshine.

UV index

January, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Note! Reflective surfaces like sand and water heighten the UV radiation levels.

Frequently asked questions

What is the average December temperature?

In Umm Lajj, 27.1°C (80.8°F) is the average high-temperature and 21.3°C (70.3°F) is the average low-temperature during December. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in December is calculated to be 27°C (80.6°F).

What is the average humidity in December?

In Umm Lajj, the average relative humidity in December is 46%.

How much does it rain in December?

In December, the rain falls for 2.5 days. Throughout December, 7mm (0.28") of precipitation is accumulated.

What is the water temperature in December?

In December, the average sea temperature is 26.2°C (79.2°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?

December has the shortest days of the year, with an average of 10h and 36min of daylight.

What is the average length of the day in December?

The average day length in December in Umm Lajj is 10h and 37min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 06:59 and sunset at 17:40. On the last day of the month, sunrise is at 07:15 and sunset at 17:52 +03.

What is the month with the least sunshine?

The months with the least sunshine are November and December, with an average of 7.6h of sunshine.

How long on average sun shines in December?

In Umm Lajj, the average sunshine duration in December is 7.6h.

What are the months with the lowest UV index?

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

How high is the UV index in December?

In Umm Lajj, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in December
Umm Lajj, Saudi Arabia

Average temperature in December - Umm Lajj, Saudi Arabia
  • Average high temperature in December: 27.1°C

The warmest month (with the highest average high temperature) is August (37.6°C).
The month with the lowest average high temperature is January (25.3°C).

  • Average low temperature in December: 21.3°C

The month with the highest average low temperature is August (30.5°C).
The coldest month (with the lowest average low temperature) is January (19.4°C).

Average pressure in December
Umm Lajj, Saudi Arabia

Average pressure in December - Umm Lajj, Saudi Arabia
  • Average pressure in December: 1015.2mbar

The month with the highest atmospheric pressure is January (1015.8mbar).
The month with the lowest atmospheric pressure is July (1003.4mbar).

Average wind speed in December
Umm Lajj, Saudi Arabia

Average wind speed in December - Umm Lajj, Saudi Arabia
  • Average wind speed in December: 13.1km/h

The windiest month (with the highest average wind speed) is June (17.1km/h).
The calmest months (with the lowest average wind speed) are October and November (12km/h).

Average humidity in December
Umm Lajj, Saudi Arabia

Average humidity in December - Umm Lajj, Saudi Arabia
  • Average humidity in December: 46%

The months with the highest relative humidity are October and November (47%).
The month with the lowest relative humidity is June (36%).

Average rainfall in December
Umm Lajj, Saudi Arabia

Average rainfall in December - Umm Lajj, Saudi Arabia
  • Average rainfall in December: 7mm

The wettest month (with the highest rainfall) is November (17mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).

Average rainfall days in December
Umm Lajj, Saudi Arabia

Average rainfall days in December - Umm Lajj, Saudi Arabia
  • Average rainfall days in December: 2.5 days

The month with the highest number of rainy days is April (2.9 days).
The month with the least rainy days is September (0.2 days).

Average sea temperature in December
Umm Lajj, Saudi Arabia

Average sea temperature in December - Umm Lajj, Saudi Arabia
  • Average sea temperature in December: 26.2°C

The best month for swimming (with the highest average sea temperature) is August (30.7°C).
The coldest month (with the lowest average sea temperature) is February (23.8°C).

Average daylight in December /
Average sunshine in December
Umm Lajj, Saudi Arabia

Average daylight in December / Average sunshine in December - Umm Lajj, Saudi Arabia
  • Average daylight in December: 10h and 4min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in December: 7h and 4min

The months with the most sunshine are June and July (Average sunshine: 12h and 18min).
The months with the least sunshine are November and December (Average sunshine: 7h and 36min).

Average sunshine days in December
Umm Lajj, Saudi Arabia

Average sunshine days in December - Umm Lajj, Saudi Arabia
  • Average sunshine days in December: 28 days

The month with the most sunshine days is July (30.8 days).
The month with the least sunshine days is November (26.6 days).

Average UV index in December
Umm Lajj, Saudi Arabia

Average UV index in December - Umm Lajj, Saudi Arabia
  • Average UV index in December: 6

The months with the highest UV index are May, June, July, August and September (UV index 8).
The months with the lowest UV index are January, November and December (UV index 6).

Average cloud cover in December
Umm Lajj, Saudi Arabia

Average cloud cover in December - Umm Lajj, Saudi Arabia
  • Average cloud cover in December: 9

The month with the most cloud cover is August (Cloud cover 11).
The month with the least cloud cover is June (Cloud cover 3).

Average visibility in December
Umm Lajj, Saudi Arabia

Average visibility in December - Umm Lajj, Saudi Arabia
  • 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).

Umm Lajj, Saudi Arabia

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