Sarnia Weather in August
Sarnia in August
The short of it: Sarnia in August averages a high of 27 °C (80 °F) and a low of 16 °C (62 °F), with 72 mm (2.8 in) of rain and about 13 h 55 min of daylight. Rated 3 of 5 for a visit; the best months are July and September. Source: TerraClimate climate normals, 1991–2020.
Average high 27° · low 16° · rain 72 mm · daylight 13 h 55 min
✦✦✦ Fair for a visit · best months: July & September
Thirty years of records give Sarnia an average August high of 27°, a low of 16° and some 72 mm of rain. Much like July: highs about 27°, nights near 16°. Easy travelling weather. Wet spells are common — about 72 mm, the 6th wettest month.
The sun is up for about 13 h 55 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 July and September.
Against its neighbours, Sarnia runs warmer than most and drier than most in August. Port Huron, 2 km to the WSW, sees much the same highs.
August in Sarnia, by the numbers
- Warmth rank
- 2nd warmest of 12
- Rain rank
- 6th wettest of 12
- Versus July
- 1° colder, 3.0 mm more rain
- Versus September
- 3° warmer
- Day–night spread
- 10°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 13 h 55 min
- Average wind
- 10 km/h
Neighbouring Towns
August averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Port HuronMichigan | 2 km WSW | 27° | 16° | 73 mm |
| MarysvilleMichigan | 10 km SW | 27° | 16° | 73 mm |
| CorunnaOntario | 11 km SSW | 27° | 16° | 73 mm |
| Saint ClairMichigan | 19 km SSW | 27° | 16° | 73 mm |
| CamlachieOntario | 21 km ENE | 26° | 15° | 72 mm |
| PetroliaOntario | 23 km ESE | 26° | 15° | 74 mm |
| RichmondMichigan | 34 km WSW | 26° | 16° | 74 mm |
| New BaltimoreMichigan | 43 km SW | 27° | 16° | 74 mm |