July weather forecast
Johannesburg, South Africa

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The vast cityscape of Gauteng Province in Johannesburg, South Africa
The vast cityscape of Gauteng Province in Johannesburg, South Africa

Weather in July

July continues the winter spell in Johannesburg, with temperatures reflecting the chill of the season. Rainfall touches the yearly low, measuring an insignificant 4mm (0.16"), indicating virtually arid conditions throughout. Due to the decreased humidity and rainfall, the city enjoys bright, clear skies and plentiful sunshine. Despite the decreased daylight hours, the winter sun ensures enough light for daytime activities. The reduced UV index brings relief to the residents, enabling them to enjoy their time outside with minimum sun protection.

Temperature

The beginning of July in Johannesburg records an average high-temperature of a still refreshing 16.7°C (62.1°F), marking a negligible difference from June's 16°C (60.8°F). A considerable shift from the daytime highs is observed during July nights, with an average low of 4.1°C (39.4°F).

Humidity

In Johannesburg, South Africa, the average relative humidity in July is 49%.

Rainfall

The month with the least rainfall is July, when the rain falls for 1 days and typically collects 4mm (0.16") of precipitation.

Daylight

The average length of the day in July in Johannesburg, South Africa, is 10h and 41min.
On the first day of July, sunrise is at 06:55 and sunset at 17:27. On the last day of the month, sunrise is at 06:47 and sunset at 17:41 SAST.

Sunshine

The average sunshine in July in Johannesburg is 9.2h.

UV index

The months with the lowest UV index in Johannesburg, South Africa, are June and July, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 in July translates into these instructions:
Exercise prevention - Precautions against solar damage are endorsed. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What are July temperatures in Johannesburg?

The average high-temperature and low-temperature in Johannesburg, South Africa, during July are 16.7°C (62.1°F) and 4.1°C (39.4°F) respectively.

What is the average humidity in July in Johannesburg?

The average relative humidity in July in Johannesburg, South Africa, is 49%.

What is the driest month in Johannesburg?

July is the month with the least rainfall in Johannesburg. Rain falls for 1 days and accumulates 4mm (0.16") of precipitation.

How much does it rain in Johannesburg in July?

In Johannesburg, South Africa, during July, the rain falls for 1 days and regularly aggregates up to 4mm (0.16") of precipitation.

How many hours of daylight does Johannesburg have in July?

The average day length in July is 10h and 41min.

When are sunrise and sunset in July in Johannesburg?

In July, on the first day of the month, sunrise is at 06:55 and sunset at 17:27. On the last day of the month, in Johannesburg, sunrise is at 06:47 and sunset at 17:41 SAST.

How long on average sun shines in July in Johannesburg?

In July, the average sunshine duration in Johannesburg, South Africa, is 9.2h.

What is the month with the lowest UV index in Johannesburg?

June and July, with an average maximum UV index of 5, are months with the lowest UV index.

How high is the UV index in July in Johannesburg?

In Johannesburg, South Africa, the average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Johannesburg, South Africa

Average temperature in July - Johannesburg, South Africa
  • Average high temperature in July: 16.7°C

The warmest month (with the highest average high temperature) is January (25.6°C).
The month with the lowest average high temperature is June (16°C).

  • Average low temperature in July: 4.1°C

The month with the highest average low temperature is January (14.7°C).
The coldest months (with the lowest average low temperature) are June and July (4.1°C).

Average humidity in July
Johannesburg, South Africa

Average humidity in July - Johannesburg, South Africa
  • Average humidity in July: 49%

The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (46%).

Average rainfall in July
Johannesburg, South Africa

Average rainfall in July - Johannesburg, South Africa
  • Average rainfall in July: 4mm

The wettest month (with the highest rainfall) is January (125mm).
The driest month (with the least rainfall) is July (4mm).

Average rainfall days in July
Johannesburg, South Africa

Average rainfall days in July - Johannesburg, South Africa
  • Average rainfall days in July: 1 days

The month with the highest number of rainy days is January (15.9 days).
The month with the least rainy days is July (1 days).

Average daylight in July /
Average sunshine in July
Johannesburg, South Africa

Average daylight in July / Average sunshine in July - Johannesburg, South Africa
  • Average daylight in July: 10h and 4min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).

  • Average sunshine in July: 9h and 1min

The month with the most sunshine is September (Average sunshine: 9h and 24min).
The month with the least sunshine is March (Average sunshine: 7h and 42min).

Average UV index in July
Johannesburg, South Africa

Average UV index in July - Johannesburg, South Africa
  • Average UV index in July: 5

The months with the highest UV index are January, February, March, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 5).

Johannesburg, South Africa

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