Randfontein climate

Randfontein Weather in May

NASA POWER reanalysis for the half-degree grid cell around Randfontein, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 24°C on May 1 to 21°C on May 31, and lows from 9°C to 5°C. Normal precipitation for the month is 19 mm over about 3 wet days.

May day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Randfontein, in °C, with the record for each date.-100102030151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

May at a glance

Average high
22°C
Average low
7°C
Precipitation
19 mm
Reanalysis high
30°CMay 5, 2012
Reanalysis low
-3°CMay 23, 2007
Daylight
11 h 06 min to 10 h 37 min
Cloud cover
22%
Humidity
52%
Dew point
3°C
Wind
10.8 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
May 124°C9°C29°C 20125°C 199215%
May 224°C9°C29°C 20127°C 199314%
May 324°C9°C28°C 19984°C 199214%
May 424°C9°C29°C 20124°C 199213%
May 523°C8°C30°C 20121°C 201312%
May 623°C8°C29°C 19980°C 200111%
May 723°C8°C29°C 19981°C 200211%
May 823°C8°C27°C 19980°C 200211%
May 923°C8°C27°C 20031°C 200610%
May 1023°C8°C27°C 19922°C 200610%
May 1123°C8°C27°C 20082°C 19988%
May 1223°C8°C27°C 19942°C 19988%
May 1323°C7°C26°C 20150°C 20008%
May 1422°C7°C27°C 20151°C 20007%
May 1522°C7°C27°C 20152°C 19987%
May 1622°C7°C27°C 20153°C 20006%
May 1722°C7°C27°C 20155°C 20006%
May 1822°C7°C26°C 20052°C 20096%
May 1922°C7°C26°C 20055°C 19986%
May 2022°C7°C27°C 20152°C 20066%
May 2122°C7°C26°C 19921°C 20126%
May 2222°C6°C26°C 2015-3°C 20076%
May 2321°C6°C25°C 1991-3°C 20075%
May 2421°C6°C25°C 2004-2°C 20076%
May 2521°C6°C25°C 1998-2°C 20065%
May 2621°C6°C25°C 19930°C 20065%
May 2721°C6°C25°C 2014-2°C 20205%
May 2821°C6°C25°C 2015-1°C 20205%
May 2921°C5°C25°C 2015-1°C 19945%
May 3021°C5°C25°C 2014-2°C 19975%
May 3121°C5°C25°C 20130°C 19975%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Randfontein, in percent.0510151102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+2).

May 1
sunrise 6:33 AM, sunset 5:39 PM
May 31
sunrise 6:48 AM, sunset 5:25 PM

Every day of May: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.