Thunder Bay Weather in August
Thunder Bay in August
The short of it: Thunder Bay in August averages a high of 25 °C (76 °F) and a low of 12 °C (53 °F), with 77 mm (3.0 in) of rain and about 14 h 19 min of daylight. Rated 3 of 5 for a visit; the best months are June and August. Source: TerraClimate climate normals, 1991–2020.
Average high 25° · low 12° · rain 77 mm · daylight 14 h 19 min
✦✦✦ Fair for a visit · best months: June & August
Thirty years of records give Thunder Bay an average August high of 25°, a low of 12° and some 77 mm of rain. Much like July: highs about 25°, nights near 12°. Easy travelling weather. Wet spells are common — about 77 mm, the 5th wettest month.
The sun is up for about 14 h 19 min in mid-August, 84 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 June and August.
Against its neighbours, Thunder Bay runs warmer than most and wetter than most in August. Vickers Park, 1 km to the SW, sees much the same highs.
August in Thunder Bay, by the numbers
- Warmth rank
- 2nd warmest of 12
- Rain rank
- 5th wettest of 12
- Versus July
- 1° colder, 14 mm less rain
- Versus September
- 5° warmer
- Day–night spread
- 13°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 14 h 19 min
- Average wind
- 13 km/h
Neighbouring Towns
August averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Vickers ParkOntario | 1 km SW | 25° | 12° | 77 mm |
| NorthwoodOntario | 2 km WNW | 25° | 12° | 77 mm |
| East EndOntario | 2 km NE | 25° | 12° | 78 mm |
| IntercityOntario | 3 km N | 25° | 12° | 77 mm |
| College ParkOntario | 3 km WNW | 25° | 12° | 77 mm |
| WestfortOntario | 3 km WSW | 24° | 12° | 78 mm |
| ParkdaleOntario | 4 km W | 24° | 11° | 77 mm |
| Academy HeightsOntario | 4 km N | 25° | 12° | 78 mm |