December weather forecast
Gammarth, Tunisia

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December

Weather in December

December in Gammarth signifies the classic winter month with temperatures dropping to a low average of 11.5°C (52.7°F). The wonder of winter in this city is pronounced by the consistent fall in average temperatures compared to November. Rainfall remains as a steady companion throughout December, keeping the atmosphere damp and chilly. Gammarth's weather in December offers a serene environment, despite a higher wind speed compared to the prior months. The city gracefully closes the year attuned to the rhythm of winter, paving the way for January's mild approach.

Temperature

Gammarth's progression into December involves a minor drop in the average high-temperature, slightly receding from an agreeable 20°C (68°F) in November to an enjoyable 16.2°C (61.2°F). Gammarth's December nights witness minimal differential from the daytime temperatures, with averages of 11.5°C (52.7°F).

Humidity

In December, the average relative humidity in Gammarth is 71%.

Rainfall

In Gammarth, in December, during 12.7 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Gammarth, during the entire year, the rain falls for 120 days and collects up to 297mm (11.69") of precipitation.

Sea temperature

In Gammarth, in December, the average water temperature is 17°C (62.6°F).
Note: For swimming, a surface water temperature of 17°C (62.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 07:13 and sunset at 17:02. On the last day of December, sunrise is at 07:31 and sunset at 17:12 CET.

Sunshine

In December, the average sunshine is 6.1h.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 4 during December translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Jun 18, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December?
The average high-temperature and low-temperature in Gammarth during December are 16.2°C (61.2°F) and 11.5°C (52.7°F) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 31°C (87.8°F).
What is the average humidity in December?
In December, the average relative humidity is 71%.
How many days does it rain in December?
In Gammarth, in December, during 12.7 rainfall days, 33mm (1.3") of precipitation is typically accumulated.
What is the sea temperature in December?
In Gammarth, the average seawater temperature in December is 17°C (62.6°F). For most, swimming in 17°C (62.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
What is the month with the shortest days?
With an average of 9h and 42min of daylight, December has the shortest days of the year.
How many hours of daylight does Gammarth have in December?
In December, the average day length is 9h and 41min.
What time are sunrise and sunset in December?
On the first day of December in Gammarth, sunrise is at 07:13 and sunset at 17:02. On the last day of the month, sunrise is at 07:31 and sunset at 17:12 CET.
How many hours of sunshine does Gammarth have in December?
In December, the average sunshine duration is 6.1h.
What are the months with the lowest UV index?
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index.
How high is the UV index in December?
In December, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
20°C
16.2°C
14.8°C
Average low temperature
14.6°C
11.5°C
9.6°C
Average pressure
1015.5mbar
1020.4mbar
1018.1mbar
Average wind speed
15.9km/h
17.6km/h
18.5km/h
Average max. wind speed
17.3km/h
18.8km/h
19.6km/h
Average wind speed gusts
24.4km/h
27.8km/h
29.4km/h
Average humidity
69%
71%
73%
Average rainfall
37mm
33mm
28mm
Average rainfall days
11.3
12.7
14.2
Average sea temperature
19°C
17°C
15°C
Average daylight
10h 1min
9h 4min
10h 0min
Average sunshine
6h 4min
6h 1min
6h 0min
Average sunshine days
15.2
14.5
13
Average UV index
4
4
4
Average cloud cover
30%
34%
37%
Average visibility
10km
10km
10km
Average temperature in December
Gammarth, Tunisia
  • Average high temperature in December: 16.2°C

The warmest month (with the highest average high temperature) is August (32.4°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in December: 11.5°C

The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is February (8.7°C).

Average pressure in December
Gammarth, Tunisia
  • Average pressure in December: 1020.4mbar

The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is April (1014.7mbar).

Average wind speed in December
Gammarth, Tunisia
  • Average wind speed in December: 17.6km/h

The windiest month (with the highest average wind speed) is February (18.8km/h).
The calmest month (with the lowest average wind speed) is August (12.7km/h).

Average humidity in December
Gammarth, Tunisia
  • Average humidity in December: 71%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (53%).

Average rainfall in December
Gammarth, Tunisia
  • Average rainfall in December: 33mm

The wettest month (with the highest rainfall) is October (38mm).
The driest month (with the least rainfall) is July (5mm).

Average rainfall days in December
Gammarth, Tunisia
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is January (14.2 days).
The month with the least rainy days is July (2.6 days).

Average sea temperature in December
Gammarth, Tunisia
  • Average sea temperature in December: 17°C

The best month for swimming (with the highest average sea temperature) is August (26°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (15°C).

Average daylight in December /
Average sunshine in December
Gammarth, Tunisia
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in December
Gammarth, Tunisia
  • Average sunshine days in December: 14.5 days

The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is February (12 days).

Average UV index in December
Gammarth, Tunisia
  • Average UV index in December: 4

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

Average cloud cover in December
Gammarth, Tunisia
  • Average cloud cover in December: 34

The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in December
Gammarth, Tunisia
  • 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).

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