New South Wales · Australia
Sydney in December
In December, Sydney averages a daytime high of 27 °C and a night-time low of 17 °C, with about 86 mm of rain over the month. It falls outside Sydney's most comfortable months, April, May and August to October.
- Average high
- 27 °C
- Average low
- 17 °C
- Rain in the month
- 86 mm
- Daylight on 15 Dec
- 14 h 20 min
- Comfortable month
- No
- Places to stay
- 126
When to go
How December compares with the rest of the year in Sydney
December is tied for the 2nd warmest month in Sydney by average daytime high; across the year the highs run from 18 °C to 28 °C and the lows from 7 °C to 19 °C. By day, December is 2 °C warmer than November, and January is 1 °C warmer than December.
December brings 86 mm of rain, less than the monthly average of 94 mm (1125 mm a year); it is the 6th wettest month.
On 15 December the sun is up for about 14 h 20 min, against 9 h 50 min at the shortest and 14 h 20 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 28 °C | 19 °C | 92 mm | |
| February | 27 °C | 19 °C | 160 mm | |
| March | 26 °C | 17 °C | 128 mm | |
| April | 23 °C | 14 °C | 80 mm | Yes |
| May | 21 °C | 10 °C | 79 mm | Yes |
| June | 18 °C | 8 °C | 139 mm | |
| July | 18 °C | 7 °C | 73 mm | |
| August | 19 °C | 7 °C | 68 mm | Yes |
| September | 22 °C | 10 °C | 55 mm | Yes |
| October | 24 °C | 13 °C | 66 mm | Yes |
| November | 25 °C | 15 °C | 100 mm | |
| December | 27 °C | 17 °C | 86 mm |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is December a good time to visit Sydney?
Not by the measure used here: about 86 mm of rain is 80 mm or more. The comfortable months in Sydney are April, May and August to October; the nearest are October, before, and April, after.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in Australia in December
Nationwide public holidays; shops and offices may close on these dates.
When to go
Destinations near Sydney that are comfortable in December
Within 300 km, nearest first, by the same measure.
Where to stay
Where to stay in Sydney
This guide lists 126 places to stay in Sydney: 29 chain properties with their details and own websites, and 97 hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 36; 1–3 km, 60; 3–10 km, 15; 10 km or more, 1.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.