Photo: Municipal Affairs and Housing · CC BY 2.0Frosty mornings in Oakville are scarcer than in 92% of Canadian towns
Sunny July days climb to about 25.5°C. June is the wettest month, February the driest. By precipitation alone, it ranks drier than 62% of Canadian towns. The heating season runs November to April: each of those months averages under 10°C.
Oakville has no ECCC normals station of its own: every figure here comes from Burlington Piers, 19 km south.
A year in Oakville at a glance
Each month’s typical high and low, in °C.
What stands out about Oakville’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Oakville feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 98 frosts a year
The frost season runs November to April, peaking in January at about 25 nights.
Frost days by month
Average days at 0°C or below
About 807 mm of rain and snow a year
On about 106 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Burlington Piers publishes no full year of precipitation or snowfall, so these figures, and the snow below, come from Toronto Pearson (Airport), 26 km away.
115 cm of snow in a typical year
Expect snow from November to April, with about 32 cm in January, the snowiest month.
Snowfall by month
Centimetres
Living with Oakville’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jun, Jul, Aug and Sep.
Parks & trails →Plan for about 10 days a year with a wind chill below −20.
The humidex tops 30 on about 46 days a year: muggy days to plan around.
Ice storms, floods and heat waves are risks, not averages: they are on Oakville’s hazards page.
Flood & hazards →ECCC’s normals location: Burlington Piers
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Burlington Piers.
| Distance from the town | 19 km south |
| Station altitude | 77 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Toronto Pearson (Airport), 26 km |
| Coldest reading, 1991–2020 | −25.3°C |
| Hottest reading, 1991–2020 | 36.0°C |
| Average wind | 13.3 km/h on average, most often from the west |
| Next-nearest location | Toronto Pearson (Airport), 26 km |
How Oakville compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Oakville’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Oakville Burlington Piers | 25.5°C | −6.3°C | 807 mm |
| Erin Mills 9.1 km · Toronto Pearson (Airport) | 27.4°C 1.9°C warmer | −8.9°C 2.6°C colder | 807 mm |
Oakville weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | 0.1°C | −6.3°C | −3.1°C | 62 mm | 32 cm |
| February | 0.7°C | −5.9°C | −2.6°C | 50 mm | 28 cm |
| March | 4.7°C | −1.9°C | 1.4°C | 51 mm | 17 cm |
| April | 10.3°C | 3.3°C | 6.9°C | 77 mm | 5 cm |
| May | 16.7°C | 9.0°C | 12.9°C | 78 mm | under 1 cm |
| June | 22.4°C | 15.1°C | 18.8°C | 81 mm | 0 cm |
| July | 25.5°C | 18.3°C | 21.9°C | 74 mm | 0 cm |
| August | 24.9°C | 18.3°C | 21.6°C | 69 mm | 0 cm |
| September | 21.4°C | 14.6°C | 18.1°C | 69 mm | 0 cm |
| October | 14.8°C | 8.3°C | 11.6°C | 67 mm | under 1 cm |
| November | 8.4°C | 2.7°C | 5.6°C | 72 mm | 9 cm |
| December | 2.9°C | −2.5°C | 0.2°C | 59 mm | 24 cm |
| Year | 12.7°C | 6.1°C | 9.4°C | 807 mm | 115 cm |
A March here can run from −21.2°C to 24.4°C
February is the least predictable month: about two years in three its average lands within 2.7°C of the normal, −2.6°C. August is the steadiest, within 1.1°C.
Where Oakville’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Burlington Piers from ECCC’s climate data site, the nearest location with every month of temperature.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Oakville’s climate
How warm does Oakville get in summer?
Of all twelve months, July has the warmest afternoons, about 25.5°C.
How cold does Oakville get in winter?
Winter bottoms out in January, with lows near −6.3°C.
How much rain and snow does Oakville get?
About 807 mm a year, rain and melted snow together. June is the wettest month (81 mm) and February the driest (50 mm).
Are these figures for Oakville itself?
Not exactly. Oakville lacks a normals station, so Burlington Piers supplies the figures.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Oakville →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).