Perth Weather in May
Perth in May
The short of it: Perth in May averages a high of 18 °C (64 °F) and a low of 6 °C (44 °F), with 81 mm (3.2 in) of rain and about 14 h 49 min of daylight. Rated 3 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.
Average high 18° · low 6° · rain 81 mm · daylight 14 h 49 min
✦✦✦ Fair for a visit · best months: June & September
May in Perth brings afternoons near 18° and nights around 6°, with about 81 mm of rain over the month. Spring takes hold here: highs climb 8° from April to about 18°, with nights near 6°. Wet spells are common — about 81 mm, the 5th wettest month. The snow cover usually melts away this month.
The sun is up for about 14 h 49 min in mid-May, 83 minutes more than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates May 3 of 5 for a visit; the finest months here are June and September.
Against its neighbours, Perth runs warmer than most and wetter than most in May. Smiths Falls, 18 km to the E, sees much the same highs.
May in Perth, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 5th wettest of 12
- Versus April
- 8° warmer, 4.0 mm more rain
- Versus June
- 5° colder
- Day–night spread
- 12°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 14 h 49 min
- Average wind
- 13 km/h
Neighbouring Towns
May averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Smiths FallsOntario | 18 km E | 18° | 7° | 80 mm |
| Carleton PlaceOntario | 27 km NNE | 18° | 6° | 76 mm |
| AlmonteOntario | 37 km N | 18° | 6° | 72 mm |
| Mississippi MillsOntario | 37 km N | 18° | 6° | 72 mm |
| StittsvilleOntario | 47 km NE | 19° | 7° | 82 mm |
| KanataOntario | 52 km NNE | 19° | 7° | 83 mm |
| Glen CairnOntario | 52 km NNE | 19° | 7° | 83 mm |
| BridlewoodOntario | 53 km NE | 19° | 7° | 83 mm |