The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
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Ottawa Weather in July

Ottawa in July

The short of it: Ottawa in July averages a high of 27 °C (81 °F) and a low of 16 °C (60 °F), with 96 mm (3.8 in) of rain and about 15 h 20 min of daylight. Rated 3 of 5 for a visit; the best months are September and June. Source: TerraClimate climate normals, 1991–2020.

Average high 27° · low 16° · rain 96 mm · daylight 15 h 20 min

✦✦✦ Fair for a visit · best months: September & June

July in Ottawa brings afternoons near 27° and nights around 16°, with about 96 mm of rain over the month. The height of summer in Ottawa, with afternoons near 27°. It is the wettest month of the year here, about 96 mm.

The sun is up for about 15 h 20 min in mid-July, 19 minutes less than a month before.

For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates July 3 of 5 for a visit; the finest months here are September and June.

Against its neighbours, Ottawa runs warmer than most and wetter than most in July. Centretown, 0 km to the NNE, sees much the same highs.

July in Ottawa, by the numbers

Warmth rank
1st warmest of 12
Rain rank
1st wettest of 12
Versus June
3° warmer, 4.0 mm more rain
Versus August
1° warmer
Day–night spread
12°
Snow season
Nov–Mar
Daylight, mid-month
15 h 20 min
Average wind
9 km/h

Neighbouring Towns

July averages · distance by the crow’s flight
TownDistanceHighLowRain
CentretownOntario0 km NNE27°16°96 mm
The GlebeOntario1 km SE27°16°96 mm
HullQuebec2 km NNW27°15°96 mm
Sandy HillOntario2 km NE27°16°96 mm
Ottawa SouthOntario2 km SSE27°16°96 mm
LowertownOntario2 km N27°16°96 mm
HintonburgOntario2 km WSW27°16°96 mm
New EdinburghOntario3 km NNE27°16°96 mm
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The Almanac · Ottawa Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Fair
The Almanac Speaks
July
✦✦✦✦✦

The height of summer in Ottawa, with afternoons near 27°. It is the wettest month of the year here, about 96 mm.

Climate of Ottawa by month
MonthHighLowRainWindDaylightVisit
January-5°-15°62 mm12 km/h9 h 5 min✦
February-3°-14°57 mm12 km/h10 h 19 min✦
March3°-7°63 mm12 km/h11 h 47 min✦
April11°1°78 mm13 km/h13 h 27 min✦✦
May19°8°87 mm11 km/h14 h 52 min✦✦✦
June25°13°92 mm9 km/h15 h 39 min✦✦✦
July27°16°96 mm9 km/h15 h 20 min✦✦✦
August26°15°92 mm9 km/h14 h 5 min✦✦✦
September22°11°82 mm9 km/h12 h 28 min✦✦✦
October14°5°89 mm11 km/h10 h 51 min✦✦
November6°-2°75 mm12 km/h9 h 26 min✦
December-1°-9°76 mm12 km/h8 h 44 min✦

Questions Readers Ask about Ottawa in July

Answered from the wire & the Almanac

What is the weather like in Ottawa in July?

Days average 27 °C (81 °F) and nights 16 °C (60 °F), with about 96 mm (3.8 in) of rain over the month. The height of summer in Ottawa, with afternoons near 27°. It is the wettest month of the year here, about 96 mm.

Is July a good time to visit Ottawa?

The Almanac gives July 3 of 5 (fair). The best months are September and June.

How long are the days in Ottawa in July?

In mid-July the sun is up for about 15 h 20 min. The days are shortening — from 8 h 44 min in December to 15 h 39 min in June.

Does it snow in Ottawa in July?

Hardly — July nights average 16 °C (60 °F), above freezing.

What should I pack for Ottawa in July?

Light clothes and a jacket for the evening, plus a good raincoat — it is a wet month.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor
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