Best time to visit Johannesburg
South Africa · Africa · Subtropical climate · Southern hemisphere
March – October
March – October is the canonical best window — average daytime highs of 23 °C and 237 mm of rain across those months. The wettest month is December (126 mm) and the driest is July (2 mm).
8 months · Spring / Autumn / Winter
Good · 79/100
Warm conditions with dry annual rainfall (673 mm); the canonical best window is March – October.
- Recommended window
- 8 months
- Canonical best months
- Climate zone
- Subtropical
- NASA POWER normals
- Dominant season
- Autumn
- Derived
- Climate score
- Good · 79/100
- Real field
- Typical stay
- 3 days
- Real field
Climate year
● recommended window · fixed scales −15–40 °C · 0–800 mm · 0–31 rain days · use ← → to change month
March
Autumn · In recommended window
Favourable month (R1–R7) inside the canonical best-time window
- High / Low
- 26.9° / 13.3°C
- Mean
- 19.7°C
- Rain
- 84.1 mm
- Rain days (≥1 mm)
- 0.5
- Daylight
- 12.2 h
When to go
Go in March – October
March – October is the canonical best window — average daytime highs of 23 °C and 237 mm of rain across those months. The wettest month is December (126 mm) and the driest is July (2 mm).
Warm conditions with dry annual rainfall (673 mm); the canonical best window is March – October.
Read the full Johannesburg destination guide- Best
- Mar · Apr · May · Jun · Jul · Aug · Sep · Oct8/12
- Good
- —0/12
- Mixed
- Jan · Feb · Nov · Dec4/12
- Avoid
- —0/12
Distribution across the twelve months
Why these months?
Johannesburg's canonical best-time window is March – October — 8 months of the year. That window is derived from the R1–R7 classification of NASA POWER climate normals, and it is the primary signal behind the verdicts above.
Inside the window, NASA POWER climate normals for a subtropical climate in the southern hemisphere read Cool / Mild / Warm with Dry / Low precipitation — 1991–2020 monthly averages, not a forecast. Outside it, month-by- month verdicts come from the R1–R7 climate classification over the same dataset.
The other 4 months sit outside the window. No month reads as least favourable on the pattern.
Signals — Best: R1–R7 favourable months · Good / Mixed: R1–R7 workable · Avoid: R1–R7 challenging · climate normals: NASA POWER 1991–2020
Read a single month
● marks a month inside the recommended window · use ← → to change month
March
Autumn · In recommended window
- Temperature
- 26.9° / 13.3°C
- Precipitation
- 84.1 mm
- Rain days (≥1 mm)
- 0.5
- Daylight
- 12.2 h
Avg high 26.9°C / avg low 13.3°C · 84.1 mm precipitation over 0.5 days with ≥1 mm rain.
Temperature, precipitation and rain days are 1991–2020 NASA POWER climate normals; daylight hours are astronomical. The verdict comes from the R1–R7 climate classification.
All twelve months
Twelve months of NASA POWER climate normals for Johannesburg (1991–2020 average), side by side with the travel verdict: whether a month is Favourable, Workable or Challenging (R1–R7 classification), and whether it falls inside the canonical best-time window. Historical climate normals — not a forecast.
| Month | Season | Temperature | Precipitation | Month readout | Verdict |
|---|---|---|---|---|---|
| January | Summer | 28.2° / 15.0°C | 121.4 mm · 0.6 rain days | Avg high 28.2°C / avg low 15.0°C · 121.4 mm precipitation over 0.6 days with ≥1 mm rain. | Mixed |
| February | Summer | 28.2° / 14.7°C | 92.7 mm · 0.6 rain days | Avg high 28.2°C / avg low 14.7°C · 92.7 mm precipitation over 0.6 days with ≥1 mm rain. | Mixed |
| Marchinside the recommended window; | Autumn | 26.9° / 13.3°C | 84.1 mm · 0.5 rain days | Avg high 26.9°C / avg low 13.3°C · 84.1 mm precipitation over 0.5 days with ≥1 mm rain. | Best |
| Aprilinside the recommended window; | Autumn | 24.1° / 9.9°C | 40.8 mm · 0.3 rain days | Avg high 24.1°C / avg low 9.9°C · 40.8 mm precipitation over 0.3 days with ≥1 mm rain. | Best |
| Mayinside the recommended window; | Autumn | 21.6° / 6.3°C | 16.8 mm · 0.1 rain days | Avg high 21.6°C / avg low 6.3°C · 16.8 mm precipitation over 0.1 days with ≥1 mm rain. | Best |
| Juneinside the recommended window; | Winter | 18.7° / 3.3°C | 5.7 mm · 0.0 rain days | Avg high 18.7°C / avg low 3.3°C · 5.7 mm precipitation over 0.0 days with ≥1 mm rain. | Best |
| Julyinside the recommended window; | Winter | 18.8° / 2.8°C | 2.3 mm · 0.0 rain days | Avg high 18.8°C / avg low 2.8°C · 2.3 mm precipitation over 0.0 days with ≥1 mm rain. | Best |
| Augustinside the recommended window; | Winter | 22.2° / 5.2°C | 6.4 mm · 0.0 rain days | Avg high 22.2°C / avg low 5.2°C · 6.4 mm precipitation over 0.0 days with ≥1 mm rain. | Best |
| Septemberinside the recommended window; | Spring | 26.7° / 9.0°C | 16.6 mm · 0.1 rain days | Avg high 26.7°C / avg low 9.0°C · 16.6 mm precipitation over 0.1 days with ≥1 mm rain. | Best |
| Octoberinside the recommended window; | Spring | 28.1° / 11.7°C | 64.5 mm · 0.4 rain days | Avg high 28.1°C / avg low 11.7°C · 64.5 mm precipitation over 0.4 days with ≥1 mm rain. | Best |
| November | Spring | 27.9° / 13.1°C | 95.6 mm · 0.5 rain days | Avg high 27.9°C / avg low 13.1°C · 95.6 mm precipitation over 0.5 days with ≥1 mm rain. | Mixed |
| December | Summer | 28.0° / 14.6°C | 126.3 mm · 0.7 rain days | Avg high 28.0°C / avg low 14.6°C · 126.3 mm precipitation over 0.7 days with ≥1 mm rain. | Mixed |
● marks a month inside the canonical best-time window
- Best
- Favourable month (R1–R7) inside the canonical best-time window
- Good
- Workable month (R1–R7) — a viable alternative outside the stated window
- Mixed
- Transitional month — workable with a flexible plan
- Avoid
- Challenging month (R1–R7) — least favourable climate pattern
Method: temperature and precipitation are 1991–2020 climate normals (monthly means); verdicts combine the R1–R7 climate classification with the canonical best-time window. No daily forecast, crowd level or price index is claimed.
Climate data source: NASA POWER (NASA Langley Research Center) · Climatology / Daily / Monthly point APIs · 1991–2020 · UTC+00:00 daily boundary.
Season by season
The recommended window (March – October) runs through Spring and Autumn and Winter. Below, each season is read on two axes: the NASA POWER climate normals for Johannesburg's 1991–2020 record, and how much of it sits inside the canonical best-time window.
Spring
Sep · Oct · Nov
Mild / Warm · Dry / Low precipitation
Avg high 26.7°C / avg low 9.0°C · 16.6 mm precipitation over 0.1 days with ≥1 mm rain.
2 of 3 months inside the recommended window
Summer
Jan · Feb · Dec
Warm · Low / Moderate precipitation
Avg high 28.2°C / avg low 15.0°C · 121.4 mm precipitation over 0.6 days with ≥1 mm rain.
Outside the recommended window
Autumn
Mar · Apr · May
Mild / Warm · Dry / Low precipitation
Avg high 26.9°C / avg low 13.3°C · 84.1 mm precipitation over 0.5 days with ≥1 mm rain.
3 of 3 months inside the recommended window
Winter
Jun · Jul · Aug
Cool / Mild · Dry precipitation
Avg high 18.7°C / avg low 3.3°C · 5.7 mm precipitation over 0.0 days with ≥1 mm rain.
3 of 3 months inside the recommended window
Temperature and precipitation are 1991–2020 NASA POWER climate normals (qualitative buckets are derived from the monthly values); the season names follow the destination's hemisphere, and daylight hours are astronomical.
Trip shape
- Typical stay
- 3 days
- Daily budget
- 80 ZAR
- Currency
- ZAR R
- Time zone
- Africa/Johannesburg
- Airport
- JNB · Johannesburg
- Travel style
- Cultural
- Region
- Africa
Frequently asked questions
What are the best months to visit Johannesburg?
The best months to visit Johannesburg are March – October, based on the R1–R7 classification of NASA POWER 1991–2020 climate normals. March – October is the canonical best window — average daytime highs of 23 °C and 237 mm of rain across those months. The wettest month is December (126 mm) and the driest is July (2 mm).
What is the weather like in Johannesburg?
Johannesburg is rated Good for climate, with a score of 79/100. Warm conditions with dry annual rainfall (673 mm); the canonical best window is March – October.
How many days do you need in Johannesburg?
We recommend 3 days in Johannesburg, ideally placed inside the recommended window of March – October.
Plan a March trip to Johannesburg
The recommended window is March – October. The planner opens with Johannesburg prefilled — set your dates inside that window and build the route around it.
Plan around this window
Climate data source: NASA POWER (NASA Langley Research Center) · Climatology / Daily / Monthly point APIs · 1991–2020 · accessed 2026-09-13 · dataset nasa-power-canonical-production-v1.2-wave2