When to go · Sarnia
Sarnia, month by month
The best months for Sarnia: Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, lake-effect snow); the last week of June and Canada Day weekend for crowds at the bridge.-1 °C (30 °F) / -8 °C (18 °F), 12 rain days30 °F (-1 °C) / 18 °F (-8 °C), 12 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, lake-effect snow); the last week of June and Canada Day weekend for crowds at the bridge.0 °C (32 °F) / -8 °C (18 °F), 10 rain days32 °F (0 °C) / 18 °F (-8 °C), 10 rain daysCrowds: Low
- MarchMixedOutside the best window (Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates). Across Canada: Late ski season; sugar shacks in Québec open for maple season.5 °C (41 °F) / -4 °C (25 °F), 11 rain days41 °F (5 °C) / 25 °F (-4 °C), 11 rain daysCrowds: Low
- AprilMixedOutside the best window (Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates). Across Canada: Thaw and mud; Rockies trails still snowy; Vancouver cherry blossoms.12 °C (54 °F) / 2 °C (36 °F), 12 rain days54 °F (12 °C) / 36 °F (2 °C), 12 rain daysCrowds: Low
- MayGoodOutside the best window (Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates). Across Canada: Victoria Day weekend opens the season; Rockies lakes still frozen at altitude.19 °C (66 °F) / 7 °C (45 °F), 11 rain days66 °F (19 °C) / 45 °F (7 °C), 11 rain daysCrowds: Medium
- JuneGreatInside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.24 °C (75 °F) / 13 °C (55 °F), 10 rain days75 °F (24 °C) / 55 °F (13 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- JulyGreatInside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.27 °C (81 °F) / 16 °C (61 °F), 9 rain days81 °F (27 °C) / 61 °F (16 °C), 9 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.26 °C (79 °F) / 15 °C (59 °F), 9 rain days79 °F (26 °C) / 59 °F (15 °C), 9 rain daysCrowds: High
- SeptemberGreatInside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.22 °C (72 °F) / 11 °C (52 °F), 10 rain days72 °F (22 °C) / 52 °F (11 °C), 10 rain daysCrowds: Medium
- OctoberGreatInside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.15 °C (59 °F) / 6 °C (43 °F), 11 rain days59 °F (15 °C) / 43 °F (6 °C), 11 rain daysCrowds: Medium
- NovemberMixedOutside the best window (Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates). Across Canada: Grey shoulder season; many seasonal businesses in parks close.8 °C (46 °F) / 0 °C (32 °F), 12 rain days46 °F (8 °C) / 32 °F (0 °C), 12 rain daysCrowds: Low
- DecemberMixedOutside the best window (Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates). Across Canada: Christmas markets and ski openings; winter tyres required on many BC highways.2 °C (36 °F) / -4 °C (25 °F), 13 rain days36 °F (2 °C) / 25 °F (-4 °C), 13 rain daysCrowds: Medium · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Sarnia, side by side.
Verdict
Jun: Great
Jul: Great
Daytime high
Jun: 24 °C (75 °F)75 °F (24 °C)
Jul: 27 °C (81 °F)81 °F (27 °C)
Night low
Jun: 13 °C (55 °F)55 °F (13 °C)
Jul: 16 °C (61 °F)61 °F (16 °C)
Rain days
Jun: 10
Jul: 9 (better)
Crowds
Jun: Medium
Jul: High
Prices
Jun: Medium
Jul: High
Festivals listed
Jun: 1
Jul: 1
June: Inside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.
July: Inside Sarnia's best window: Jun–Sep for beaches and the waterfront; Sep–Oct for quiet trails and lower room rates.
Sarnia: figures are long-term averages from this guide, not a forecast.