Frost Dates for JOHANNESBURG INTL, South Africa

Elevation: 1676 m

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. August 7
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. June 5

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost August 14
First Fall Frost May 29

Hard Freeze (−2°C)

Last Spring Hard Freeze July 23
First Fall Hard Freeze June 13
26.14°S, 28.25°E © OpenStreetMap

Growing Season

302 Days August 7 to June 5

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 9b

Avg. annual minimum: −4 to −1°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cwb Subtropical Highland (Dry Winter)

Mild year-round due to elevation, with dry winters and wet summers. Pleasant growing conditions for a wide range of crops. Common in highland tropical regions.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January25°20°15°
February25°20°14°
March24°18°13°
April21°15°10°
May19°13°6°
June17°10°3°
July17°10°3°
August20°13°5°
September24°17°9°
October25°18°11°
November25°19°13°
December25°19°14°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January117
February107
March86
April41
May10
June0
July0
August0
September15
October74
November91
December124

Sunrise / Sunset

Daylight Longest: 13h 38m · Shortest: 10h 22m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January5:16 AM6:44 PM13h 28m
February5:33 AM6:27 PM12h 53m
March5:54 AM6:06 PM12h 11m
April6:19 AM5:41 PM11h 23m
May6:38 AM5:22 PM10h 43m
June6:49 AM5:11 PM10h 22m
July6:45 AM5:15 PM10h 31m
August6:28 AM5:32 PM11h 05m
September6:04 AM5:56 PM11h 51m
October5:41 AM6:19 PM12h 38m
November5:21 AM6:39 PM13h 18m
December5:11 AM6:49 PM13h 38m

Nearby Stations

PRETORIA/IRENE, South Africa July 22 - June 16 PRETORIA(MET), South Africa BETHAL, South Africa August 7 - June 7 POTCHEFSTROOM, South Africa August 4 - June 12

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