October
October · April · May
88climate match
United States · 1991–2020
Best time to visit
Johannesburg.
October leads for comfortable weather in Johannesburg: typically 25.3°C by day, 11°C at night, with 8 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortOctober
Typical high25.3°C
Typical low11°C
Rain in October8 mm
September
September · June · July
78climate match
March
March · April · November
88climate match
The weakest month is December, scoring 38 against October’s 88 — days reach only 12.6°C, 11° below the 24°C the score treats as ideal, and nights drop to 1.6°C.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
3913.1° / 2°
Feb
4715° / 3°
Mar
6518.6° / 5.2°
Apr
8322.8° / 7.9°
May
8227.7° / 12.1°
Jun
6533.5° / 17°
Jul
4836.9° / 20.4°
Aug
5136.3° / 19.9°
Sep
7032.2° / 16.6°
Oct
8825.3° / 11°
Nov
6318° / 5.5°
Dec
3812.6° / 1.6°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 13.1°C | 2°C | 39 mm | 3.7 | 10 h 01 | 39 | Strong coverage |
| February | 15°C | 3°C | 41 mm | 3.9 | 10 h 51 | 47 | Strong coverage |
| March | 18.6°C | 5.2°C | 22 mm | 2.8 | 11 h 52 | 65 | Strong coverage |
| April | 22.8°C | 7.9°C | 7 mm | 1.3 | 13 h 02 | 83 | Strong coverage |
| May | 27.7°C | 12.1°C | 3 mm | 0.7 | 14 h 00 | 82 | Strong coverage |
| June | 33.5°C | 17°C | 1 mm | 0.2 | 14 h 32 | 65 | Strong coverage |
| July | 36.9°C | 20.4°C | 6 mm | 0.8 | 14 h 19 | 48 | Strong coverage |
| August | 36.3°C | 19.9°C | 2 mm | 0.5 | 13 h 29 | 51 | Strong coverage |
| September | 32.2°C | 16.6°C | 5 mm | 0.5 | 12 h 21 | 70 | Strong coverage |
| October | 25.3°C | 11°C | 8 mm | 0.9 | 11 h 14 | 88 | Strong coverage |
| November | 18°C | 5.5°C | 10 mm | 1.4 | 10 h 15 | 63 | Strong coverage |
| December | 12.6°C | 1.6°C | 27 mm | 2.8 | 9 h 47 | 38 | Strong coverage |
What has changed
Johannesburg runs +1.6°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.8
Feb
+1.5
Mar
+1.9
Apr
+2.7
May
-0.1
Jun
+1.8
Jul
+0.7
Aug
+1.7
Sep
+1.8
Oct
+1.6
Nov
+2.3
Dec
+1.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 24.4°C29 Jan 2018 | -15.6°C18 Jan 1943 | 75 mm22 Jan 1943 | 158 mm1995 · driest 0 mm in 1984 | 81 |
| February | 30.0°C19 Feb 1943 | -9.4°C14 Feb 1944 | 67 mm22 Feb 1944 | 185 mm1998 · driest 0 mm in 1967 | 82 |
| March | 31.1°C31 Mar 1966 | -8.9°C28 Mar 1977 | 87 mm1 Mar 1983 | 127 mm1983 · driest 0 mm in 1985 | 82 |
| April | 35.6°C24 Apr 2012 | -5.0°C9 Apr 1943 | 29 mm12 Apr 1999 | 62 mm1965 · driest 0 mm in 1987 | 81 |
| May | 39.4°C26 May 1951 | -1.1°C7 May 1965 | 20 mm9 May 1977 | 26 mm1977 · driest 0 mm in 1970 | 80 |
| June | 43.9°C20 Jun 2017 | 3.9°C1 Jun 2011 | 10 mm6 Jun 1987 | 12 mm1987 · driest 0 mm in 1980 | 82 |
| July | 43.9°C11 Jul 1961 | 9.4°C18 Jul 1987 | 74 mm19 Jul 2015 | 89 mm2015 · driest 0 mm in 2019 | 81 |
| August | 43.9°C3 Aug 2018 | 9.4°C20 Aug 1959 | 25 mm19 Aug 1939 | 40 mm1945 · driest 0 mm in 1969 | 81 |
| September | 42.2°C1 Sep 2017 | 3.3°C14 Sep 1941 | 41 mm26 Sep 1997 | 51 mm1976 · driest 0 mm in 1970 | 82 |
| October | 36.7°C1 Oct 1980 | -2.8°C29 Oct 1971 | 50 mm18 Oct 2005 | 71 mm2004 · driest 0 mm in 1949 | 83 |
| November | 32.2°C1 Nov 2017 | -11.1°C29 Nov 1975 | 37 mm2 Nov 2008 | 92 mm1965 · driest 0 mm in 1975 | 83 |
| December | 25.0°C4 Dec 1958 | -12.8°C22 Dec 1990 | 54 mm30 Dec 1965 | 120 mm1943 · driest 0 mm in 1975 | 83 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 8 | 1 |
| February | <1 | 0 | 7 | 1 |
| March | 3 | <1 | 3 | <1 |
| April | 11 | 2 | <1 | <1 |
| May | 21 | 11 | 0 | 0 |
| June | 27 | 23 | 0 | 0 |
| July | 29 | 29 | 0 | <1 |
| August | 29 | 29 | 0 | 0 |
| September | 27 | 23 | 0 | <1 |
| October | 18 | 6 | <1 | <1 |
| November | 3 | 0 | 3 | <1 |
| December | 0 | 0 | 10 | <1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was October (scoring 91); on 2011–2025 it is April (87). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 4% | 10% | 4% | 9% | 9.7–15.0°C |
| February | 17% | 12% | 4% | 11% | 11.6–17.9°C |
| March | 38% | 10% | 2% | 6% | 15.1–20.8°C |
| April | 70% | 5% | 1% | 2% | 18.9–25.4°C |
| May | 91% | 2% | <1% | <1% | 25.0–30.0°C |
| June | 99% | <1% | 0% | 0% | 30.8–35.5°C |
| July | 98% | 2% | <1% | <1% | 35.5–38.5°C |
| August | 98% | 2% | <1% | 1% | 34.5–37.6°C |
| September | 97% | 2% | <1% | <1% | 29.7–34.0°C |
| October | 84% | 3% | <1% | <1% | 22.2–27.7°C |
| November | 35% | 5% | 2% | 2% | 14.6–20.1°C |
| December | 4% | 9% | 3% | 6% | 10.1–15.2°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 5360822
- NOAA station
- USC00047253 · RANDSBURG
- Station distance
- 1.7 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 27 usable years
- Daylight
- Calculated from latitude 35.37°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.