Temperature
Pleasant by day, brisk at night.
68°Ftypical May high
Typical range
May climate
May in Ottawa
Canada · North America
Mild days with cool nights and some sun.
One of the best months here
Daytime high
68°F
Lows around 47°F
Rain
Several rainy days
Sun
10 h/day
Air feel
Very dry
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 12 wet days, the highest monthly average.
39%wet-day frequency
Precip amountWet-day chanceSnowfall
Sunshine
A mix of sunshine and cloud.
10.2 hMay sunshine
Heat & humidity by month
Very dryMay Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In May, afternoons feel about 59° and nights feel near 44°.
FrigidFreezingVery coldColdCoolComfortableWarmNight hours
Clear sky
Mostly cloudy skies this month.
38%May Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in May.
7 mphMay Light breeze
More detailIncludes daypart comfort
Typical May day
May late afternoons are around 65°F, easing to about 62°F in early evening.
Avg temp Typical range
Morning56°F
Rain16%
Cloud61%
Humid airLow
Sun intensityModerate
Best windowMidday64°F
Rain19%
Cloud69%
Humid airLow
Sun intensityStrong
Late afternoon65°F
Rain21%
Cloud71%
Humid airLow
Sun intensityModerate
Early evening61°F
Rain17%
Cloud64%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 24 | 8 | 2.8 | 11 | 5.3 | 77 |
| Feb | 28 | 10 | 2.4 | 10 | 6.7 | 73 |
| Mar | 38 | 21 | 2.9 | 10 | 8.0 | 68 |
| Apr | 54 | 35 | 3.7 | 11 | 8.8 | 63 |
| May | 68 | 47 | 3.6 | 12 | 10.2 | 65 |
| Jun | 76 | 56 | 4.1 | 12 | 11.3 | 71 |
| Jul | 80 | 61 | 3.9 | 12 | 12.1 | 74 |
| Aug | 78 | 59 | 3.7 | 11 | 11.0 | 77 |
| Sep | 71 | 52 | 3.5 | 10 | 8.9 | 79 |
| Oct | 56 | 41 | 3.8 | 12 | 6.5 | 78 |
| Nov | 42 | 30 | 3.1 | 11 | 4.9 | 79 |
| Dec | 30 | 18 | 3.4 | 12 | 4.4 | 81 |
Similar climates
Similar
Similar travel styleChicagoUnited StatesSimilar travel styleNew York CityUnited StatesSimilar travel styleTorontoCanadaSimilar travel styleHalifaxCanada
Want a side-by-side climate view? Compare Ottawa with Chicago.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology