Hermanus climate

Hermanus Weather in April

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

Average highs run from 21°C on April 1 to 19°C on April 30, and lows from 17°C to 15°C. Normal precipitation for the month is 48 mm over about 9 wet days.

April day by day

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

Normal daily high and low temperature at Hermanus, in °C, with the record for each date.1015202530151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

April at a glance

Average high
20°C
Average low
16°C
Precipitation
48 mm
Reanalysis high
29°CApr 29, 2017
Reanalysis low
12°CApr 27, 2011
Daylight
11 h 43 min to 10 h 44 min
Cloud cover
46%
Humidity
80%
Dew point
14°C
Wind
21.6 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
Apr 121°C17°C27°C 200815°C 201924%
Apr 221°C17°C24°C 199516°C 202024%
Apr 321°C17°C28°C 200915°C 200124%
Apr 420°C17°C24°C 200915°C 200124%
Apr 520°C17°C26°C 199613°C 199725%
Apr 620°C17°C26°C 201413°C 199724%
Apr 720°C17°C25°C 201414°C 200823%
Apr 820°C17°C24°C 201115°C 202022%
Apr 920°C17°C25°C 201515°C 201322%
Apr 1020°C17°C26°C 201414°C 199324%
Apr 1120°C16°C26°C 201414°C 199325%
Apr 1220°C16°C28°C 199914°C 199325%
Apr 1320°C16°C26°C 201414°C 199326%
Apr 1420°C16°C24°C 200914°C 199326%
Apr 1520°C16°C24°C 200514°C 199526%
Apr 1620°C16°C24°C 201813°C 199626%
Apr 1719°C16°C22°C 200914°C 199626%
Apr 1819°C16°C24°C 201714°C 201325%
Apr 1919°C16°C24°C 199814°C 199627%
Apr 2019°C16°C23°C 201714°C 199627%
Apr 2119°C16°C22°C 201714°C 199527%
Apr 2219°C16°C22°C 199114°C 201128%
Apr 2319°C16°C23°C 200814°C 200129%
Apr 2419°C16°C23°C 201313°C 200129%
Apr 2519°C16°C24°C 201314°C 200129%
Apr 2619°C16°C24°C 199613°C 201128%
Apr 2719°C16°C22°C 199912°C 201128%
Apr 2819°C15°C23°C 200413°C 200029%
Apr 2919°C15°C29°C 201713°C 201628%
Apr 3019°C15°C24°C 199613°C 201628%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Hermanus, in percent.01020301102030
  • Chance of a wet day

Sunrise and sunset

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

April 1
sunrise 6:55 AM, sunset 6:38 PM
April 30
sunrise 7:18 AM, sunset 6:02 PM

Every day of April: 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.