Australia · 1991–2020 normal
Helensburgh in
December.
Typical December weather in Helensburgh: 24°C by day, 17.5°C at night, 76 mm of rain over 8.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high24°C
Typical low17.5°C
Rain76 mm
Wet days8.6
Comfort score 85 this month, the highest of the year. Daylight is calculated as 14 h 25 from latitude -34.18°. Open-water sea temperature is 21.3°C (13 km from the place centre).
Event window
Warm sea in December
The nearest open-water NOAA OISST 1991–2020 cell averages 21.3°C in December. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 2163641
- NOAA station
- ASN00068228 · BELLAMBI AWS
- Station distance
- 22.1 km from the place centre
- Coverage
- Good coverage · 24 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.