When to go · London, Ontario
London, Ontario, month by month
The best months for London, Ontario: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, snow), late Dec.-2 °C (28 °F) / -9 °C (16 °F), 8 rain days28 °F (-2 °C) / 16 °F (-9 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, snow), late Dec.-1 °C (30 °F) / -9 °C (16 °F), 7 rain days30 °F (-1 °C) / 16 °F (-9 °C), 7 rain daysCrowds: Low
- MarchMixedOutside the best window (May–Oct). Across Canada: Late ski season; sugar shacks in Québec open for maple season.5 °C (41 °F) / -5 °C (23 °F), 7 rain days41 °F (5 °C) / 23 °F (-5 °C), 7 rain daysCrowds: Low
- AprilMixedOutside the best window (May–Oct). Across Canada: Thaw and mud; Rockies trails still snowy; Vancouver cherry blossoms.12 °C (54 °F) / 1 °C (34 °F), 8 rain days54 °F (12 °C) / 34 °F (1 °C), 8 rain daysCrowds: Low
- MayGreatInside London, Ontario's best window: May–Oct.19 °C (66 °F) / 8 °C (46 °F), 9 rain days66 °F (19 °C) / 46 °F (8 °C), 9 rain daysCrowds: Medium
- JuneGreatInside London, Ontario's best window: May–Oct.24 °C (75 °F) / 13 °C (55 °F), 9 rain days75 °F (24 °C) / 55 °F (13 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
- JulyGreatInside London, Ontario's best window: May–Oct.27 °C (81 °F) / 15 °C (59 °F), 8 rain days81 °F (27 °C) / 59 °F (15 °C), 8 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside London, Ontario's best window: May–Oct.26 °C (79 °F) / 14 °C (57 °F), 8 rain days79 °F (26 °C) / 57 °F (14 °C), 8 rain daysCrowds: High
- SeptemberGreatInside London, Ontario's best window: May–Oct.22 °C (72 °F) / 11 °C (52 °F), 10 rain days72 °F (22 °C) / 52 °F (11 °C), 10 rain daysCrowds: Medium
- OctoberGreatInside London, Ontario's best window: May–Oct.15 °C (59 °F) / 5 °C (41 °F), 8 rain days59 °F (15 °C) / 41 °F (5 °C), 8 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct). Across Canada: Grey shoulder season; many seasonal businesses in parks close.8 °C (46 °F) / 0 °C (32 °F), 10 rain days46 °F (8 °C) / 32 °F (0 °C), 10 rain daysCrowds: Low
- DecemberAvoidListed as a month to avoid: Jan–Feb (cold, snow), late Dec.1 °C (34 °F) / -5 °C (23 °F), 9 rain days34 °F (1 °C) / 23 °F (-5 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in London, Ontario, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 19 °C (66 °F)66 °F (19 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Night low
May: 8 °C (46 °F)46 °F (8 °C)
Jun: 13 °C (55 °F)55 °F (13 °C)
Rain days
May: 9
Jun: 9
Crowds
May: Medium
Jun: Medium
Prices
May: Medium
Jun: Medium
Festivals listed
May: 0
Jun: 1
May: Inside London, Ontario's best window: May–Oct.
June: Inside London, Ontario's best window: May–Oct.
London, Ontario: figures are long-term averages from this guide, not a forecast.