Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
With the arrival of August, Johannesburg's average high-temperature registers at a hot 94.5°F (34.7°C), indicating a subtle variation from the previous month. Johannesburg anticipates a pronounced temperature drop from daily highs during the nights of August, with an average low of 71.4°F (21.9°C).Humidity
With an average relative humidity of 20%, August is the least humid month.Rainfall
In August, the rain falls for 2.6 days. Throughout August, 0.16" (4mm) of precipitation is accumulated. In Johannesburg, during the entire year, the rain falls for 29.6 days and collects up to 2.64" (67mm) of precipitation.Snowfall
In Johannesburg, snow does not fall in January through October and December.Daylight
In August, the average length of the day is 13h and 27min.On the first day of the month, sunrise is at 5:59 am and sunset at 7:53 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:18 pm PDT.
Sunshine
In August, the average sunshine is 12h.UV index
In August, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 7 in August leads to these guidelines:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in August?
What is the least humid month in Johannesburg?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Johannesburg have in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
What is the UV index reading in August?
Average temperature in August
Johannesburg, CA
- Average high temperature in August: 94.5°F
The warmest month (with the highest average high temperature) is July (95.9°F).
The month with the lowest average high temperature is December (52.5°F).
- Average low temperature in August: 71.4°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in August
Johannesburg, CA
- Average pressure in August: 29.86"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in August
Johannesburg, CA
- Average wind speed in August: 7.7mph
The windiest month (with the highest average wind speed) is May (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).
Average humidity in August
Johannesburg, CA
- Average humidity in August: 20%
The month with the highest relative humidity is January (47%).
The month with the lowest relative humidity is August (20%).
Average rainfall in August
Johannesburg, CA
- Average rainfall in August: 0.16"
The wettest month (with the highest rainfall) is December (0.35").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
Johannesburg, CA
- Average rainfall days in August: 2.6 days
The month with the highest number of rainy days is July (4.5 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in August
Johannesburg, CA
- Average snowfall in August: 0"
The month with the highest snowfall is November (0.83").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and December (0").
Average snowfall days in August
Johannesburg, CA
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January, February, November and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Johannesburg, CA
- Average daylight in August: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in August
Johannesburg, CA
- Average sunshine days in August: 25.3 days
The month with the most sunshine days is December (28.1 days).
The month with the least sunshine days is July (23.2 days).
Average UV index in August
Johannesburg, CA
- Average UV index in August: 7
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in August
Johannesburg, CA
- Average cloud cover in August: 5
The months with the most cloud cover are January, March and December (Cloud cover 17).
The month with the least cloud cover is September (Cloud cover 4).
Average visibility in August
Johannesburg, CA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Johannesburg, California, USA
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