Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January's weather records an average high-temperature of a still warm 28.7°C (83.7°F), showing little deviation from December. January is characterized by a distinct thermal shift, with nighttime lows averaging at a moderate 15.8°C (60.4°F).Heat index
Throughout January, the heat index is evaluated at a tropical 31°C (87.8°F). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Consider that heat index readings are for situations in the shade and light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
The months with the lowest humidity in Porterville are January and February, with an average relative humidity of 61%.Rainfall
In Porterville, during January, the rain falls for 5.2 days and regularly aggregates up to 14mm (0.55") of precipitation. Throughout the year, in Porterville, South Africa, there are 98.9 rainfall days, and 437mm (17.2") of precipitation is accumulated.Daylight
In Porterville, the average length of the day in January is 14h and 2min.On the first day of January, sunrise is at 05:38 and sunset at 19:56. On the last day of the month, sunrise is at 06:05 and sunset at 19:48 SAST.
Sunshine
The months with the most sunshine are January and December, with an average of 11.2h of sunshine.UV index
The months with the highest UV index in Porterville are January, February, 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 exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 6 in January leads to these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Porterville in January?
What are the least humid months in Porterville?
What is the average humidity in January in Porterville?
How many days does it rain in January in Porterville?
How many hours of daylight does Porterville have in January?
When is the sunrise / sunset in January in Porterville?
What is the month with the most sunshine in Porterville?
How many hours of sunshine does Porterville have in January?
What is the month with the highest UV index in Porterville?
What is the UV index intensity in January in Porterville?
Average temperature in January
Porterville, South Africa
- Average high temperature in January: 28.7°C
The warmest month (with the highest average high temperature) is February (29.1°C).
The months with the lowest average high temperature are June and July (16.3°C).
- Average low temperature in January: 15.8°C
The month with the highest average low temperature is January (15.8°C).
The coldest month (with the lowest average low temperature) is August (6.7°C).
Average pressure in January
Porterville, South Africa
- Average pressure in January: 1013.3mbar
The month with the highest atmospheric pressure is July (1022.1mbar).
The months with the lowest atmospheric pressure are January and February (1013.3mbar).
Average wind speed in January
Porterville, South Africa
- Average wind speed in January: 11.4km/h
The windiest months (with the highest average wind speed) are January and November (11.4km/h).
The calmest month (with the lowest average wind speed) is May (9.4km/h).
Average humidity in January
Porterville, South Africa
- Average humidity in January: 61%
The month with the highest relative humidity is August (76%).
The months with the lowest relative humidity are January and February (61%).
Average rainfall in January
Porterville, South Africa
- Average rainfall in January: 14mm
The wettest month (with the highest rainfall) is June (107mm).
The driest month (with the least rainfall) is February (6mm).
Average rainfall days in January
Porterville, South Africa
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is August (12.4 days).
The month with the least rainy days is February (3.7 days).
Average daylight in January /
Average sunshine in January
Porterville, South Africa
- Average daylight in January: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in January: 11h and 1min
The months with the most sunshine are January and December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in January
Porterville, South Africa
- Average sunshine days in January: 23.5 days
The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is June (16.1 days).
Average UV index in January
Porterville, South Africa
- Average UV index in January: 6
The months with the highest UV index are January, February, November and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in January
Porterville, South Africa
- Average cloud cover in January: 14
The month with the most cloud cover is June (Cloud cover 33).
The month with the least cloud cover is February (Cloud cover 12).
Average visibility in January
Porterville, South Africa
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
Porterville, South Africa
Weather forecast for your location
2. Allow the app to use your location