Castletown climate
Typical historical weather for Castletown, Australia, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Castletown.
Annual average
16.4°C
across all months
Warmest month
23.7°C
Feb average high
Coolest month
10.4°C
Aug average low
Annual rainfall
578mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
36.8°C
16 December 2025
Coldest day
6.2°C
6 September 2019
Wettest day
61.5mm
4 August 2020
Windiest day
13.2m/s
3 August 2022
See the detail: Castletown on 4 August 2020.