Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Gansbaai marks the onset of December with an average high-temperature of an agreeable 21.5°C (70.7°F), subtly divergent from November's 19.7°C (67.5°F). December nights in Gansbaai experience a minor temperature downturn to an enjoyable 17°C (62.6°F).Humidity
The average relative humidity in December is 75%.Rainfall
February and December are months with the least rain when the rain falls for 9.9 days and typically aggregates up to 13mm (0.51") of rain.Sea temperature
In Gansbaai, in December, the average water temperature is 19.8°C (67.6°F).Note: Swimming in 19.8°C (67.6°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
The month with the longest days is December, with an average of 14h and 24min of daylight.On the first day of the month, sunrise is at 05:22 and sunset at 19:40. On the last day of December, sunrise is at 05:32 and sunset at 19:58 SAST.
Sunshine
With an average of 10.4h of sunshine, December has the most sunshine of the year.UV index
In December, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During December, 5 as the daily maximum UV index converts into the following advice:
Heed the precautions - It is counselled to guard against solar damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What is the average December temperature in Gansbaai?
What is the average humidity in December in Gansbaai?
What is the driest month in Gansbaai?
How much does it rain in Gansbaai in December?
What is the sea water temperature in December in Gansbaai?
When are the longest days in Gansbaai?
How many hours of daylight does Gansbaai have in December?
When are sunrise and sunset in December in Gansbaai?
What month has the most sunshine in Gansbaai?
How many hours of sunshine does Gansbaai have in December?
What is the UV index intensity in December in Gansbaai?
Average temperature in December
Gansbaai, South Africa
- Average high temperature in December: 21.5°C
The warmest month (with the highest average high temperature) is February (23.3°C).
The month with the lowest average high temperature is August (16.2°C).
- Average low temperature in December: 17°C
The month with the highest average low temperature is February (18.3°C).
The coldest month (with the lowest average low temperature) is August (11.5°C).
Average pressure in December
Gansbaai, South Africa
- Average pressure in December: 1014.6mbar
The month with the highest atmospheric pressure is July (1021.8mbar).
The month with the lowest atmospheric pressure is February (1013.8mbar).
Average wind speed in December
Gansbaai, South Africa
- Average wind speed in December: 21.1km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is May (17.7km/h).
Average humidity in December
Gansbaai, South Africa
- Average humidity in December: 75%
The months with the highest relative humidity are January, February, March, May, September and October (76%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in December
Gansbaai, South Africa
- Average rainfall in December: 13mm
The wettest month (with the highest rainfall) is June (47mm).
The driest months (with the least rainfall) are February and December (13mm).
Average rainfall days in December
Gansbaai, South Africa
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is October (7.1 days).
Average sea temperature in December
Gansbaai, South Africa
- Average sea temperature in December: 19.8°C
The best month for swimming (with the highest average sea temperature) is January (20.7°C).
The coldest months (with the lowest average sea temperature) are July, August and September (15.8°C).
Average daylight in December /
Average sunshine in December
Gansbaai, South Africa
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 10h and 2min
The month with the most sunshine is December (Average sunshine: 10h and 24min).
The month with the least sunshine is June (Average sunshine: 6h and 12min).
Average sunshine days in December
Gansbaai, South Africa
- Average sunshine days in December: 16 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in December
Gansbaai, South Africa
- Average UV index in December: 5
The months with the highest UV index are January and February (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in December
Gansbaai, South Africa
- Average cloud cover in December: 31
The months with the most cloud cover are March and October (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Gansbaai, South Africa
- 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).
Gansbaai, South Africa
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