Santa Helena climate

Santa Helena Weather in April

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

Average highs run from 30°C on April 1 to 26°C on April 30, and lows from 22°C to 18°C. Normal precipitation for the month is 123 mm over about 12 wet days.

April day by day

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

Normal daily high and low temperature at Santa Helena, in °C, with the record for each date.010203040151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

April at a glance

Average high
28°C
Average low
20°C
Precipitation
123 mm
Reanalysis high
35°CApr 11, 2005
Reanalysis low
9°CApr 27, 2016
Daylight
11 h 50 min to 11 h 11 min
Cloud cover
53%
Humidity
71%
Dew point
18°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
Apr 130°C22°C35°C 200918°C 201236%
Apr 230°C22°C34°C 200717°C 199535%
Apr 330°C22°C34°C 200918°C 202034%
Apr 430°C22°C34°C 200217°C 199733%
Apr 530°C22°C33°C 201613°C 199733%
Apr 629°C22°C33°C 201615°C 199734%
Apr 729°C22°C35°C 200514°C 199435%
Apr 829°C21°C34°C 200515°C 199435%
Apr 929°C21°C35°C 200515°C 202035%
Apr 1029°C21°C35°C 200514°C 199336%
Apr 1129°C21°C35°C 200514°C 202037%
Apr 1229°C21°C35°C 200212°C 199537%
Apr 1329°C21°C34°C 200512°C 200337%
Apr 1428°C20°C33°C 200512°C 201437%
Apr 1528°C20°C34°C 200213°C 200837%
Apr 1628°C20°C34°C 200211°C 199938%
Apr 1728°C20°C34°C 20029°C 199938%
Apr 1828°C20°C33°C 20169°C 199939%
Apr 1928°C20°C33°C 201612°C 199940%
Apr 2028°C20°C33°C 201612°C 199139%
Apr 2128°C20°C33°C 201614°C 199539%
Apr 2227°C19°C33°C 200211°C 199537%
Apr 2327°C19°C33°C 200212°C 199536%
Apr 2427°C19°C32°C 200212°C 199536%
Apr 2527°C19°C33°C 200212°C 199534%
Apr 2627°C19°C33°C 200211°C 201634%
Apr 2727°C19°C31°C 19939°C 201635%
Apr 2827°C19°C32°C 199410°C 201635%
Apr 2927°C19°C32°C 199310°C 201634%
Apr 3026°C18°C32°C 201810°C 201633%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Santa Helena, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

April 1
sunrise 6:46 AM, sunset 6:36 PM
April 30
sunrise 6:59 AM, sunset 6:10 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.