Hornby Island climate

Hornby Island Weather in August

1991-2020 means of the daily record at Sisters Island (GHCN CA001027403), 18 km from Hornby Island

Average highs run from 21°C on August 1 to 19°C on August 31, and lows from 16°C to 15°C. Normal precipitation for the month is 38 mm over about 7 wet days.

August day by day

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

Normal daily high and low temperature at Hornby Island, in °C, with the record for each date.1015202530151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
21°C
Average low
16°C
Precipitation
38 mm
Record high
30°CAug 16, 2022
Record low
11°CAug 30, 2008
Daylight
15 h 09 min to 13 h 30 min
Cloud cover
52%
Humidity
76%
Dew point
14°C
Wind
6.1 km/h

Every day of the month

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

DateNormal highNormal lowRecord highRecord lowChance wet
Aug 121°C16°C26°C 200912°C 200818%
Aug 221°C16°C26°C 201713°C 200819%
Aug 322°C16°C28°C 201714°C 200818%
Aug 422°C17°C26°C 201213°C 200218%
Aug 522°C17°C26°C 201214°C 199618%
Aug 622°C17°C26°C 200814°C 202019%
Aug 721°C16°C28°C 201315°C 201120%
Aug 821°C16°C28°C 201814°C 200620%
Aug 921°C17°C29°C 202215°C 200620%
Aug 1021°C17°C26°C 199714°C 200920%
Aug 1121°C17°C28°C 199714°C 200620%
Aug 1222°C17°C28°C 202114°C 202020%
Aug 1322°C17°C29°C 202114°C 200020%
Aug 1422°C17°C29°C 201014°C 200921%
Aug 1522°C17°C28°C 201015°C 199920%
Aug 1622°C17°C30°C 202214°C 200221%
Aug 1721°C17°C28°C 202213°C 199821%
Aug 1821°C17°C27°C 202214°C 200222%
Aug 1921°C16°C28°C 202214°C 202323%
Aug 2021°C16°C25°C 201613°C 200823%
Aug 2120°C16°C23°C 201713°C 200824%
Aug 2221°C16°C29°C 202214°C 200125%
Aug 2320°C16°C27°C 202213°C 200126%
Aug 2420°C16°C28°C 202214°C 200126%
Aug 2521°C16°C28°C 202214°C 200926%
Aug 2621°C16°C26°C 202213°C 200127%
Aug 2721°C16°C26°C 202312°C 200828%
Aug 2821°C16°C25°C 200213°C 201028%
Aug 2920°C16°C27°C 202213°C 199929%
Aug 3020°C15°C27°C 202211°C 200829%
Aug 3119°C15°C27°C 202212°C 200830%

Chance of rain

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

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:50 AM, sunset 8:59 PM
August 31
sunrise 6:33 AM, sunset 8:03 PM

Every day of August: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station CA001027403, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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 2026-09-29. Sun and moon: computed with the NOAA solar equations and Meeus.