Johannesburg
South Africa · Africa
Safety: Review
Safety context
Wayther flags this destination for extra safety review. Check current travel advisories and local precautions before booking.
Check travel advisoriesYear-round range: 37°F to 77°F
May
Excellent conditions this month
Your monthly fit score
Comfort fit by month.
Climate details▼
Temperature
Average highs and lows.
May has comfortable temperatures — not too hot, not too cold.
Shaded band = typical daily swing (P10 of night lows to P90 of afternoon peaks) — spans wider than avg high/low lines because it captures day-to-day variation.
| = MayRainfall
Monthly rain and rain days.
May is one of the driest months — very little rain expected.
Sunshine
Average hours of bright sun per day.
May is one of the sunniest months — great for outdoor plans.
Clear sky
Clear-sky share is the inverse of average cloud cover (100% minus cloud cover). Band labels follow standard meteorological categories; distribution within each band varies by day.
Air comfort by month
Humidity and heat feel by month.
Time-of-day patterns
Typical hourly rhythm for May.
Temperature by hour
Temperature by hour and month
Typical temperature through the day across the year (1996-2025 normals, local time). Shaded cells are nighttime.
In May, afternoons reach about 68° and nights settle near 45°.
▶Full month-by-month data
| Month | High °F | Low °F | Rain days | Rain (in) | Sun h/day | Humidity |
|---|---|---|---|---|---|---|
| Jan | 77°F | 59°F | 19 | 5.3in | 8.2h | 66.42857142857143% |
| Feb | 77°F | 58°F | 16 | 4.4in | 8.2h | 66.71428571428571% |
| Mar | 75°F | 56°F | 13 | 3.6in | 8.6h | 65.28571428571428% |
| Apr | 70°F | 50°F | 8 | 1.9in | 8.8h | 61.285714285714285% |
| May | 67°F | 43°F | 2 | 0.8in | 9.7h | 52.71428571428571% |
| Jun | 63°F | 38°F | 1 | 0.3in | 9.7h | 49.285714285714285% |
| Jul | 63°F | 37°F | 0 | 0.1in | 10h | 43.14285714285714% |
| Aug | 69°F | 42°F | 1 | 0.2in | 10.4h | 38% |
| Sep | 76°F | 49°F | 2 | 0.7in | 10.9h | 35.285714285714285% |
| Oct | 77°F | 53°F | 10 | 2.6in | 9.3h | 45.14285714285714% |
| Nov | 76°F | 55°F | 15 | 4.0in | 8.2h | 56.714285714285715% |
| Dec | 77°F | 58°F | 20 | 5.2in | 7.6h | 64.42857142857143% |