St. Catharines Weather in August
St. Catharines in August
The short of it: St. Catharines in August averages a high of 26 °C (79 °F) and a low of 17 °C (63 °F), with 72 mm (2.8 in) of rain and about 13 h 56 min of daylight. Rated 3 of 5 for a visit; the best months are September and June. Source: TerraClimate climate normals, 1991–2020.
Average high 26° · low 17° · rain 72 mm · daylight 13 h 56 min
✦✦✦ Fair for a visit · best months: September & June
Thirty years of records give St. Catharines an average August high of 26°, a low of 17° and some 72 mm of rain. Much like July: highs about 26°, nights near 17°. Easy travelling weather. Wet spells are common — about 72 mm, the 7th wettest month.
The sun is up for about 13 h 56 min in mid-August, 68 minutes less than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates August 3 of 5 for a visit; the finest months here are September and June.
Against its neighbours, St. Catharines runs warmer than most and drier than most in August. Niagara Falls, 16 km to the ESE, sees much the same highs.
August in St. Catharines, by the numbers
- Warmth rank
- 2nd warmest of 12
- Rain rank
- 7th wettest of 12
- Versus July
- 1° colder, 9.0 mm less rain
- Versus September
- 4° warmer
- Day–night spread
- 9°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 13 h 56 min
- Average wind
- 11 km/h
Neighbouring Towns
August averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Niagara FallsOntario | 16 km ESE | 26° | 17° | 77 mm |
| Niagara FallsNew York | 17 km ESE | 26° | 17° | 77 mm |
| WellandOntario | 21 km S | 26° | 17° | 79 mm |
| GrimsbyOntario | 26 km W | 26° | 17° | 79 mm |
| North TonawandaNew York | 34 km ESE | 26° | 16° | 81 mm |
| Fort ErieOntario | 39 km SE | 26° | 16° | 82 mm |
| AmherstNew York | 42 km ESE | 27° | 16° | 84 mm |
| Stoney CreekOntario | 43 km W | 27° | 17° | 79 mm |