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
The warmest month is December, with an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 15.6°C (60.1°F).Heat index
For December, the heat index is evaluated at a hot 33°C (91.4°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In December, the average relative humidity in Harrismith is 67%.Rainfall
In Harrismith, in December, it is raining for 22.5 days, with typically 89mm (3.5") of accumulated precipitation. Throughout the year, there are 149.6 rainfall days, and 523mm (20.59") of precipitation is accumulated.Daylight
With an average of 13h and 54min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 04:58 and sunset at 18:47. On the last day of December, sunrise is at 05:09 and sunset at 19:04 SAST.
Sunshine
The average sunshine in December is 10.7h.UV index
January, November and December, with an average maximum UV index of 6, are months with the highest UV index in Harrismith. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 6 in December leads to these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. 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 Harrismith?
How hot does it get in Harrismith in December?
What is the average humidity in December in Harrismith?
How much does it rain in Harrismith in December?
When are the longest days in Harrismith?
How many hours of daylight does Harrismith have in December?
When is the sunrise / sunset in December in Harrismith?
How long on average sun shines in December in Harrismith?
When is the highest UV index in Harrismith?
What is the UV index reading in December in Harrismith?
Average temperature in December
Harrismith, South Africa
- Average high temperature in December: 29.3°C
The warmest month (with the highest average high temperature) is December (29.3°C).
The month with the lowest average high temperature is June (19.7°C).
- Average low temperature in December: 15.6°C
The month with the highest average low temperature is January (16°C).
The coldest month (with the lowest average low temperature) is July (6.2°C).
Average pressure in December
Harrismith, South Africa
- Average pressure in December: 1014.9mbar
The month with the highest atmospheric pressure is July (1024.6mbar).
The month with the lowest atmospheric pressure is December (1014.9mbar).
Average wind speed in December
Harrismith, South Africa
- Average wind speed in December: 7.7km/h
The windiest months (with the highest average wind speed) are October and November (8.9km/h).
The calmest month (with the lowest average wind speed) is May (6km/h).
Average humidity in December
Harrismith, South Africa
- Average humidity in December: 67%
The month with the highest relative humidity is February (73%).
The months with the lowest relative humidity are August and September (45%).
Average rainfall in December
Harrismith, South Africa
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is January (99mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in December
Harrismith, South Africa
- Average rainfall days in December: 22.5 days
The month with the highest number of rainy days is December (22.5 days).
The month with the least rainy days is June (2.8 days).
Average daylight in December /
Average sunshine in December
Harrismith, 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 4min
The month with the most sunshine is October (Average sunshine: 11h and 6min).
The month with the least sunshine is April (Average sunshine: 7h and 6min).
Average sunshine days in December
Harrismith, South Africa
- Average sunshine days in December: 4.1 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is December (4.1 days).
Average UV index in December
Harrismith, South Africa
- Average UV index in December: 6
The months with the highest UV index are January, 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
Harrismith, South Africa
- Average cloud cover in December: 34
The month with the most cloud cover is January (Cloud cover 36).
The months with the least cloud cover are June and July (Cloud cover 9).
Average visibility in December
Harrismith, 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 and February (8km).
Harrismith, South Africa
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