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Johannesburg Climate Guide
South Africa
Metric | Imperial    Bars | Symbols
Maximum Daytime Temperature (°C)
Minimum Night-time Temperature (°C)
27
27 °C (81°F) Maximum Daytime Temperature in January
27
27 °C (81°F) Maximum Daytime Temperature in February
26
26 °C (79°F) Maximum Daytime Temperature in March
23
23 °C (73°F) Maximum Daytime Temperature in April
21
21 °C (70°F) Maximum Daytime Temperature in May
18
18 °C (64°F) Maximum Daytime Temperature in June
18
18 °C (64°F) Maximum Daytime Temperature in July
21
21 °C (70°F) Maximum Daytime Temperature in August
24
24 °C (75°F) Maximum Daytime Temperature in September
25
25 °C (77°F) Maximum Daytime Temperature in October
26
26 °C (79°F) Maximum Daytime Temperature in November
27
27 °C (81°F) Maximum Daytime Temperature in December
J F M A M J J A S O N D
15
15 °C (59°F) Minimum Night-time Temperature in January
15
15 °C (59°F) Minimum Night-time Temperature in February
13
13 °C (55°F) Minimum Night-time Temperature in March
10
10 °C (50°F) Minimum Night-time Temperature in April
6
6 °C (43°F) Minimum Night-time Temperature in May
2
2 °C (36°F) Minimum Night-time Temperature in June
2
2 °C (36°F) Minimum Night-time Temperature in July
5
5 °C (41°F) Minimum Night-time Temperature in August
9
9 °C (48°F) Minimum Night-time Temperature in September
12
12 °C (54°F) Minimum Night-time Temperature in October
13
13 °C (55°F) Minimum Night-time Temperature in November
15
15 °C (59°F) Minimum Night-time Temperature in December
J F M A M J J A S O N D
Hours of Sunshine
Hours of Daylight
8
8 Hours of Sunshine (61% of Daylight Hours) in January
8
8 Hours of Sunshine (63% of Daylight Hours) in February
8
8 Hours of Sunshine (65% of Daylight Hours) in March
8
8 Hours of Sunshine (70% of Daylight Hours) in April
9
9 Hours of Sunshine (83% of Daylight Hours) in May
9
9 Hours of Sunshine (85% of Daylight Hours) in June
9
9 Hours of Sunshine (87% of Daylight Hours) in July
10
10 Hours of Sunshine (86% of Daylight Hours) in August
10
10 Hours of Sunshine (81% of Daylight Hours) in September
9
9 Hours of Sunshine (70% of Daylight Hours) in October
9
9 Hours of Sunshine (63% of Daylight Hours) in November
9
9 Hours of Sunshine (64% of Daylight Hours) in December
J F M A M J J A S O N D
14
14 Hours of Daylight in January
13
13 Hours of Daylight in February
12
12 Hours of Daylight in March
12
12 Hours of Daylight in April
11
11 Hours of Daylight in May
11
11 Hours of Daylight in June
11
11 Hours of Daylight in July
11
11 Hours of Daylight in August
12
12 Hours of Daylight in September
13
13 Hours of Daylight in October
13
13 Hours of Daylight in November
14
14 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
14
14 Days with some Rain in January
10
10 Days with some Rain in February
10
10 Days with some Rain in March
7
7 Days with some Rain in April
2
2 Days with some Rain in May
2
2 Days with some Rain in June
1
1 Day with some Rain in July
2
2 Days with some Rain in August
4
4 Days with some Rain in September
9
9 Days with some Rain in October
13
13 Days with some Rain in November
14
14 Days with some Rain in December
J F M A M J J A S O N D
131
131 mm (5.2 inches) Monthly Rainfall in January
90
90 mm (3.5 inches) Monthly Rainfall in February
91
91 mm (3.6 inches) Monthly Rainfall in March
52
52 mm (2.0 inches) Monthly Rainfall in April
13
13 mm (0.5 inches) Monthly Rainfall in May
8
8 mm (0.3 inches) Monthly Rainfall in June
4
4 mm (0.2 inches) Monthly Rainfall in July
7
7 mm (0.3 inches) Monthly Rainfall in August
26
26 mm (1.0 inch) Monthly Rainfall in September
74
74 mm (2.9 inches) Monthly Rainfall in October
107
107 mm (4.2 inches) Monthly Rainfall in November
107
107 mm (4.2 inches) Monthly Rainfall in December
J F M A M J J A S O N D
Heat & Humidity / Chance of Frost
UV Index (Maximum)
L
Low Heat & Humidity in January
L
Low Heat & Humidity in February
L
Low Heat & Humidity in March
-
No Heat & Humidity or Frost in April
6
6 Days with Frost in May
13
13 Days with Frost in June
13
13 Days with Frost in July
8
8 Days with Frost in August
-
No Heat & Humidity or Frost in September
-
No Heat & Humidity or Frost in October
L
Low Heat & Humidity in November
L
Low Heat & Humidity in December
J F M A M J J A S O N D
11
UV 11+ (Extreme) in January
11
UV 11+ (Extreme) in February
11
UV 11+ (Extreme) in March
9
UV 9 (Very High) in April
6
UV 6 (High) in May
5
UV 5 (Moderate) in June
5
UV 5 (Moderate) in July
7
UV 7 (High) in August
9
UV 9 (Very High) in September
11
UV 11 (Extreme) in October
11
UV 11+ (Extreme) in November
11
UV 11+ (Extreme) in December
J F M A M J J A S O N D
Sea Temperature (°C)
Johannesburg Climate Guide (Historical Weather Averages), South Africa
Elev: 1,600 m   Long: 028°03'E   Lat: 26°08'S
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