Perth Weather in December
Perth in December
The short of it: Perth in December averages a high of -1 °C (31 °F) and a low of -9 °C (17 °F), with 66 mm (2.6 in) of rain and about 8 h 48 min of daylight. Rated 1 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.
Average high -1° · low -9° · rain 66 mm · daylight 8 h 48 min
✦ Travel with care for a visit · best months: June & September
December in Perth brings afternoons near -1° and nights around -9°, with about 66 mm of rain over the month. The year turns hard here: highs drop 7° from November to about -1°, with nights near -9°. Wet spells are common — about 66 mm, the 10th wettest month. Snow lies on the ground; mind the passes.
The sun is up for about 8 h 48 min in mid-December, 41 minutes less than a month before.
For the traveller: pack the buffalo coat, mittens and fur-lined boots, and an oilskin besides. The Almanac rates December 1 of 5 for a visit; the finest months here are June and September.
Against its neighbours, Perth runs warmer than most and about as wet in December. Smiths Falls, 18 km to the E, sees much the same highs.
December in Perth, by the numbers
- Warmth rank
- 10th warmest of 12
- Rain rank
- 10th wettest of 12
- Versus November
- 7° colder, 13 mm less rain
- Versus January
- 4° warmer
- Day–night spread
- 8°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 8 h 48 min
- Average wind
- 15 km/h
Neighbouring Towns
December averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Smiths FallsOntario | 18 km E | -1° | -8° | 69 mm |
| Carleton PlaceOntario | 27 km NNE | -1° | -9° | 63 mm |
| AlmonteOntario | 37 km N | -2° | -9° | 62 mm |
| Mississippi MillsOntario | 37 km N | -2° | -9° | 62 mm |
| StittsvilleOntario | 47 km NE | -2° | -9° | 72 mm |
| KanataOntario | 52 km NNE | -2° | -9° | 73 mm |
| Glen CairnOntario | 52 km NNE | -2° | -9° | 73 mm |
| BridlewoodOntario | 53 km NE | -2° | -9° | 73 mm |