Best time to visit Caledon
The best time to visit Caledon is May and July–September, judged on twenty years of weather records and the events worth going for.
Caledon, Ontario, Canada
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | -2 °C / 28 °F | -9.4 °C / 15 °F | 60 mm / 2.4 in | neither best nor good |
| February | -1.2 °C / 30 °F | -9.8 °C / 14 °F | 60 mm / 2.4 in | neither best nor good |
| March | 4.9 °C / 41 °F | -4.4 °C / 24 °F | 64 mm / 2.5 in | neither best nor good |
| April | 11.6 °C / 53 °F | 1.6 °C / 35 °F | 87 mm / 3.4 in | neither best nor good |
| May | 19 °C / 66 °F | 8 °C / 46 °F | 79 mm / 3.1 in | best month |
| June | 23.4 °C / 74 °F | 13.1 °C / 56 °F | 99 mm / 3.9 in | good month |
| July | 26.1 °C / 79 °F | 15.6 °C / 60 °F | 80 mm / 3.1 in | best month |
| August | 24.9 °C / 77 °F | 14.7 °C / 58 °F | 71 mm / 2.8 in | best month |
| September | 21.1 °C / 70 °F | 10.8 °C / 51 °F | 68 mm / 2.7 in | best month |
| October | 13.9 °C / 57 °F | 5.1 °C / 41 °F | 80 mm / 3.1 in | neither best nor good |
| November | 6.6 °C / 44 °F | -1 °C / 30 °F | 59 mm / 2.3 in | neither best nor good |
| December | 0.9 °C / 34 °F | -5.2 °C / 23 °F | 71 mm / 2.8 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: best
- JJune: good
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Best
- May, July–September
- Good
- June
Why these months
May · best
In its favour: feels like (high) 17.6 °C / 64 °F, average daily high 19 °C / 66 °F, share of daylight that is sunny 75%, precipitation 79 mm / 3.1 in, days with heavy rain 2.8 days, relative humidity 65%, average daily low 8 °C / 46 °F, wet days 11.4 days.
June · good
In its favour: feels like (high) 23.6 °C / 74 °F, average daily high 23.4 °C / 74 °F, share of daylight that is sunny 79%, precipitation 99 mm / 3.9 in, days with heavy rain 3.1 days, average daily low 13.1 °C / 56 °F, relative humidity 68%.
Against: wet days 12.1 days.
July · best
In its favour: feels like (high) 27.2 °C / 81 °F, share of daylight that is sunny 84%, average daily high 26.1 °C / 79 °F, precipitation 80 mm / 3.1 in, days with heavy rain 2.6 days, average daily low 15.6 °C / 60 °F, wet days 10.5 days, relative humidity 70%.
August · best
In its favour: feels like (high) 25.6 °C / 78 °F, average daily high 24.9 °C / 77 °F, share of daylight that is sunny 81%, precipitation 71 mm / 2.8 in, days with heavy rain 2.1 days, wet days 9.8 days, average daily low 14.7 °C / 58 °F, relative humidity 74%.
September · best
In its favour: feels like (high) 20.6 °C / 69 °F, average daily high 21.1 °C / 70 °F, share of daylight that is sunny 77%, precipitation 68 mm / 2.7 in, days with heavy rain 2.1 days, wet days 9.3 days, average daily low 10.8 °C / 51 °F.
Against: relative humidity 77%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: best
- MMay: best
- JJune: good
- JJuly: good
- AAugust: good
- SSeptember: best
- OOctober: best
- NNovember: neither
- DDecember: neither
- Best
- April–May, September–October
- Good
- June–August
Why these months
April · best
In its favour: average daily high 11.6 °C / 53 °F, precipitation 87 mm / 3.4 in, share of daylight that is sunny 68%, daylight per day 13.5 h, days with heavy rain 2.8 days, average daily low 1.6 °C / 35 °F, feels like (high) 8.2 °C / 47 °F, wet days 11.8 days, wind (daily max) 20 km/h / 12 mph.
May · best
In its favour: average daily high 19 °C / 66 °F, precipitation 79 mm / 3.1 in, feels like (high) 17.6 °C / 64 °F, average daily low 8 °C / 46 °F, share of daylight that is sunny 75%, daylight per day 14.8 h, days with heavy rain 2.8 days, wet days 11.4 days, wind (daily max) 17 km/h / 11 mph.
June · good
In its favour: average daily high 23.4 °C / 74 °F, precipitation 99 mm / 3.9 in, average daily low 13.1 °C / 56 °F, share of daylight that is sunny 79%, daylight per day 15.4 h, days with heavy rain 3.1 days, feels like (high) 23.6 °C / 74 °F, wet days 12.1 days, wind (daily max) 17 km/h / 10 mph.
July · good
In its favour: precipitation 80 mm / 3.1 in, share of daylight that is sunny 84%, daylight per day 15.1 h, days with heavy rain 2.6 days, wet days 10.5 days, average daily low 15.6 °C / 60 °F, wind (daily max) 15 km/h / 10 mph.
Against: average daily high 26.1 °C / 79 °F, feels like (high) 27.2 °C / 81 °F.
August · good
In its favour: precipitation 71 mm / 2.8 in, average daily high 24.9 °C / 77 °F, days with heavy rain 2.1 days, wet days 9.8 days, share of daylight that is sunny 81%, daylight per day 13.9 h, average daily low 14.7 °C / 58 °F, wind (daily max) 15 km/h / 9 mph, feels like (high) 25.6 °C / 78 °F.
September · best
In its favour: average daily high 21.1 °C / 70 °F, precipitation 68 mm / 2.7 in, days with heavy rain 2.1 days, wet days 9.3 days, feels like (high) 20.6 °C / 69 °F, average daily low 10.8 °C / 51 °F, share of daylight that is sunny 77%, daylight per day 12.5 h, wind (daily max) 16 km/h / 10 mph.
October · best
In its favour: average daily high 13.9 °C / 57 °F, precipitation 80 mm / 3.1 in, feels like (high) 11.3 °C / 52 °F, average daily low 5.1 °C / 41 °F, share of daylight that is sunny 64%, days with heavy rain 2.6 days, daylight per day 11 h, wet days 11.9 days, wind (daily max) 19 km/h / 12 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Bristol Mountain Ski Resort, 242 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -6.8 °C | -6.2 °C | 0.5 °C | 8.2 °C | 17.6 °C | 23.6 °C | 27.2 °C | 25.6 °C | 20.6 °C | 11.3 °C | 2.7 °C | -3.6 °C |
| Days with heavy rain | 1.8 days | 1.7 days | 2 days | 2.8 days | 2.8 days | 3.1 days | 2.6 days | 2.1 days | 2.1 days | 2.6 days | 1.5 days | 2 days |
| Time rain usually falls | 4 am | 2 am | 8 am | 12 pm | 4 pm | 2 pm | 4 pm | 5 pm | 3 pm | 6 am | 10 pm | 11 am |
| Sunshine per day | 5.3 h | 6.8 h | 8.2 h | 9.2 h | 11.1 h | 12.2 h | 12.7 h | 11.4 h | 9.6 h | 7 h | 6 h | 4.4 h |
| Relative humidity | 78% | 74% | 67% | 65% | 65% | 68% | 70% | 74% | 77% | 78% | 77% | 80% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 5.2 µg/m³ | 7.7 µg/m³ | 7.9 µg/m³ | 8.7 µg/m³ | 10.5 µg/m³ | 16.3 µg/m³ | 11.3 µg/m³ | 10.3 µg/m³ | 9.9 µg/m³ | 6.9 µg/m³ | 5.9 µg/m³ | 5.5 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 9.9 µg/m³ | 14.4 µg/m³ | 14.5 µg/m³ | 15.8 µg/m³ | 17.9 µg/m³ | 26.7 µg/m³ | 19.6 µg/m³ | 16.8 µg/m³ | 16.2 µg/m³ | 11.6 µg/m³ | 10.9 µg/m³ | 10.2 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.