Mosman Weather in December
Mosman in December
The short of it: Mosman in December averages a high of 25 °C (77 °F) and a low of 17 °C (63 °F), with 84 mm (3.3 in) of rain and about 14 h 24 min of daylight. Rated 3 of 5 for a visit; the best months are April and November. Source: TerraClimate climate normals, 1991–2020.
Average high 25° · low 17° · rain 84 mm · daylight 14 h 24 min
✦✦✦ Fair for a visit · best months: April & November
Thirty years of records give Mosman an average December high of 25°, a low of 17° and some 84 mm of rain. Much like November: highs about 25°, nights near 17°. Easy travelling weather. Wet spells are common — about 84 mm, the 8th wettest month.
The sun is up for about 14 h 24 min in mid-December, 27 minutes more than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates December 3 of 5 for a visit; the finest months here are April and November.
Against its neighbours, Mosman runs cooler than most and drier than most in December. Sydney Central Business District, 4 km to the SW, is 1° warmer by day.
December in Mosman, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 8th wettest of 12
- Versus November
- 2° warmer, 6.0 mm less rain
- Versus January
- 1° colder
- Day–night spread
- 8°
- Snow season
- seldom any
- Daylight, mid-month
- 14 h 24 min
- Average wind
- 15 km/h
Neighbouring Towns
December averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Sydney Central Business DistrictNew South Wales | 4 km SW | 26° | 18° | 81 mm |
| SydneyNew South Wales | 4 km SW | 26° | 18° | 81 mm |
| Surry HillsNew South Wales | 6 km SSW | 26° | 18° | 85 mm |
| ManlyNew South Wales | 6 km NE | 24° | 18° | 88 mm |
| ChatswoodNew South Wales | 7 km NW | 26° | 17° | 89 mm |
| RandwickNew South Wales | 8 km S | 26° | 18° | 85 mm |
| MascotNew South Wales | 11 km SSW | 27° | 18° | 78 mm |
| Dee WhyNew South Wales | 11 km NNE | 25° | 17° | 90 mm |