August weather forecast
Johannesburg, CA

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Weather in August

August, the last month of the summer in Johannesburg, is also a hot month, with an average temperature fluctuating between 71.4°F (21.9°C) and 94.5°F (34.7°C).

Temperature

As Johannesburg transitions from July to August, the average high-temperatures adjust to a hot 94.5°F (34.7°C), nearly the same as the previous 95.9°F (35.5°C). Johannesburg's average nighttime temperature descends significantly from the day's peak in August, settling at a pleasant 71.4°F (21.9°C).

Humidity

August is the least humid month, with an average relative humidity of 20%.

Rainfall

In August, in Johannesburg, 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

The average length of the day in August in Johannesburg, California, 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, in Johannesburg, sunrise is at 6:22 am and sunset at 7:18 pm PDT.

Sunshine

In August, the average sunshine is 12h.

UV index

In Johannesburg, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: During August, 7 as the daily maximum UV index converts into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

How hot does it get in Johannesburg in August?

August temperatures in Johannesburg, California, vary between a high-temperature of 94.5°F (34.7°C) and a low-temperature of 71.4°F (21.9°C).

What is the least humid month in Johannesburg?

With an average relative humidity of 20%, August is the least humid month in Johannesburg, California.

What is the average humidity in August in Johannesburg?

In August, the average relative humidity in Johannesburg is 20%.

How many days does it rain in August in Johannesburg?

In Johannesburg, during August, the rain falls for 2.6 days and regularly aggregates up to 0.16" (4mm) of precipitation.

When it does not snow in Johannesburg?

January through October and December are months without snowfall in Johannesburg.

What is the average length of the day in August in Johannesburg?

In Johannesburg, California, the average day length in August is 13h and 27min.

When are sunrise and sunset in August in Johannesburg?

On the first day of August in Johannesburg, California, sunrise is at 5:59 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:18 pm PDT.

How long on average sun shines in August in Johannesburg?

In August, the average sunshine duration in Johannesburg, California, is 12h.

What is the UV index intensity in August in Johannesburg?

The average daily maximum UV index in August in Johannesburg, California, is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Johannesburg, CA

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).

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Average pressure in August
Johannesburg, CA

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).

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Average wind speed in August
Johannesburg, CA

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).

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Average humidity in August
Johannesburg, CA

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%).

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Average rainfall in August
Johannesburg, CA

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").

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Average rainfall days in August
Johannesburg, CA

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).

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Average snowfall in August
Johannesburg, CA

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").

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Average snowfall days in August
Johannesburg, CA

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).

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Average daylight in August /
Average sunshine in August
Johannesburg, CA

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).

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Average sunshine days in August
Johannesburg, CA

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).

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Average UV index in August
Johannesburg, CA

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).

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Average cloud cover in August
Johannesburg, CA

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).

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Average visibility in August
Johannesburg, CA

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).

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Johannesburg, California, USA

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