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 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
December, with its high-temperature average of 26.7°C (80.1°F) and a low-temperature average of 14.2°C (57.6°F), is the warmest month.Humidity
In December, the average relative humidity is 69%.Rainfall
December is the month with the most rainfall in Newcastle. Rain falls for 18 days and accumulates 59mm (2.32") of precipitation.Daylight
The month with the longest days in Newcastle is December, with an average of 13h and 54min of daylight.On the first day of December in Newcastle, sunrise is at 04:56 and sunset at 18:42. On the last day of the month, sunrise is at 05:07 and sunset at 18:59 SAST.
Sunshine
In December, the average sunshine is 10.9h.UV index
The months with the highest UV index are November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during December leads to these advisories:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What time of the year is the hottest in Newcastle?
What are December temperatures in Newcastle?
What is the average humidity in December in Newcastle?
What is the wettest month in Newcastle?
How much does it rain in Newcastle in December?
When are the longest days in Newcastle?
What is the average length of the day in December in Newcastle?
When are sunrise and sunset in December in Newcastle?
How many hours of sunshine does Newcastle have in December?
What are the months with the highest UV index in Newcastle?
What is the UV index intensity in December in Newcastle?
Average temperature in December
Newcastle, South Africa
- Average high temperature in December: 26.7°C
The warmest month (with the highest average high temperature) is December (26.7°C).
The months with the lowest average high temperature are June and July (18°C).
- Average low temperature in December: 14.2°C
The month with the highest average low temperature is January (14.3°C).
The coldest month (with the lowest average low temperature) is July (4.5°C).
Average pressure in December
Newcastle, South Africa
- Average pressure in December: 1014.8mbar
The month with the highest atmospheric pressure is July (1024.7mbar).
The month with the lowest atmospheric pressure is December (1014.8mbar).
Average wind speed in December
Newcastle, South Africa
- Average wind speed in December: 8.5km/h
The windiest month (with the highest average wind speed) is September (10.7km/h).
The calmest month (with the lowest average wind speed) is March (7.2km/h).
Average humidity in December
Newcastle, South Africa
- Average humidity in December: 69%
The months with the highest relative humidity are January and February (74%).
The month with the lowest relative humidity is September (42%).
Average rainfall in December
Newcastle, South Africa
- Average rainfall in December: 59mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Newcastle, South Africa
- Average rainfall days in December: 18 days
The month with the highest number of rainy days is December (18 days).
The month with the least rainy days is July (2.1 days).
Average daylight in December /
Average sunshine in December
Newcastle, South Africa
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 54min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in December: 10h and 5min
The month with the most sunshine is October (Average sunshine: 11h and 24min).
The month with the least sunshine is April (Average sunshine: 7h and 6min).
Average sunshine days in December
Newcastle, South Africa
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is December (9.2 days).
Average UV index in December
Newcastle, South Africa
- Average UV index in December: 6
The months with the highest UV index are November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in December
Newcastle, South Africa
- Average cloud cover in December: 33
The month with the most cloud cover is January (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 8).
Average visibility in December
Newcastle, South Africa
- Average visibility in December: 9km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February and March (8km).
Newcastle, South Africa
Weather forecast for your location
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