Peterborough weather in July

In July, Peterborough sees average daytime highs of 26°C and overnight lows near 16°C, with 88 mm of rain across 10.9 wet days and about 15 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 29% of the time in July, and the air most often feels humid.

Daylight stretches from about 15 h 18 min at the start of July to 14 h 30 min by month's end. Set against the rest of the year, July is Peterborough's 3rd-clearest and 11th-windiest month. For the whole year in context, see Peterborough's year-round climate.

Daytime high
26°
1st warmest
Overnight low
16°
12th coldest
Rainfall
88 mm
10.9 wet days
Daylight
15 hours
4:48 AM – 7:50 PM
Cloud cover
57%
3rd clearest
Wind
11 km/h
11th windiest
Solar energy
6.28 kWh/m²
Travel score
6.6
out of 10

Peterborough is city in Ontario, Canada.

Air quality
Good
PM2.5 6 µg/m³ · 2019
Density
1,469/km²
people per km²
Founded
1819

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical July day in Peterborough reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, July runs about 2°C warmer than June and about 1°C warmer than August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32515
42516
52616
62616
72616
82616
92616
102616
112616
122616
132616
142616
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

How July really feels in Peterborough

Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Peterborough weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -11°6810.79.49.10.0
Feb-2° / -11°528.2710.20.0
Mar / -5°6310.3611.60.2
Apr11° / 8711.52.513.22.7
May18° / 8210.7014.55.7
Jun23° / 13°9210.9015.36.6
Jul26° / 16°8810.90156.6
Aug25° / 15°8510.5013.86.9
Sep21° / 11°859.6012.36.5
Oct13° / 8511.50.410.83.6
Nov / -1°7410.33.19.40.6
Dec / -7°6810.67.18.70.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 24% of July, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35446
45446
55446
65545
75545
85644
95644
105644
115644
125644
135644
145545
155545
165545
175446
185347
195347
205248
215248
225248
235149
245050
255050
264951
275050
285050
294951
304951
315050

Chance of precipitation in July

Any precipitation

Peterborough gets around 88 mm of rain over 10.9 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
433
533
633
733
833
934
1034
1135
1235
1335
1436
1536
1636
1737
1837
1937
2037
2138
2238
2338
2437
2537
2637
2737
2836
2936
3035
3135

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the humid band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1352823121
2352823121
3352823121
4342824122
5342824132
6342824132
7332725132
8332725142
9322626142
10312627142
11302628152
12292529152
13292530152
14282530152
15272531153
16262532143
17262532143
18252533143
19242533153
20242533153
21232633153
22222633153
23222733153
24222832153
25212932153
26213031153
27213130163
28213130162
29213129162
30223228172
31223227172

Wind in July

Winds average 11 km/h in July.

Across July, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 18 min at the start of July to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over July. Sunrise moves from 4:38 AM to 5:03 AM, and sunset from 7:55 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.34:387:55
215.34:387:55
315.34:397:55
415.34:397:55
515.24:407:55
615.24:417:54
715.24:417:54
815.24:427:54
915.24:437:53
1015.24:437:53
1115.14:447:52
1215.14:457:52
1315.14:467:51
1415.14:477:51
1515.04:477:50
1615.04:487:50
1715.04:497:49
1815.04:507:48
1914.94:517:47
2014.94:527:47
2114.94:537:46
2214.94:547:45
2314.84:557:44
2414.84:567:43
2514.84:577:42
2614.74:587:41
2714.74:597:40
2814.65:007:39
2914.65:017:38
3014.65:027:37
3114.55:037:35

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.28 kWh/m².

For context, solar energy here swings from a low near 1.31 kWh/m² to a high of 6.36 kWh/m² in June across the year — July's 6.28 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Bright
296.0Bright
305.9Bright
315.9Bright
Planning a trip in July

Is July a good time to visit Peterborough?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.6
Sightseeing
2nd-best month of the year
6.2
Beach & pool
1st-best month of the year

July is a reasonable time to visit Peterborough for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Peterborough in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Peterborough sees daytime highs around 26°C and nights near 16°C. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Peterborough in July

The nearest coast averages about 20°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 48 km away) is warmest in August at about 21°C and coldest in March near 3°C.

It's comfortable for a long swim from Jul 25 to Sep 5 — about 1.4 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May6Bracing
Jun14Bracing
Jul20Cool
Aug21Refreshing
Sep19Cool
Oct14Bracing
Nov8Bracing
Dec5Bracing

UV index in Peterborough in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Peterborough peaks around July 10 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 11 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 10UV 8Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug6High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Peterborough?

Peterborough sits at 44.3°N, 78.3°W, 188 m above sea level, in Canada. The nearest listed city is Lindsay, 34 km away.

Topography around Peterborough

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Peterborough.

Within 3 km, the terrain around Peterborough has only modest variations in elevation — a maximum elevation change of 80 m around an average of 208 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 188 m; within 80 km, significant variations in elevation — a maximum elevation change of 485 m.

The land around Peterborough is covered by artificial surfaces (42%) and trees (37%) within 3 km, trees (41%), cropland (27%) and grassland (23%) within 16 km, and trees (49%) and water (24%) within 80 km.

3 km
80 m
16 km
188 m
80 km
485 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Lindsay 34 km · Cobourg 40 km · Bowmanville 52 km · Quinte West 61 km · Oshawa 62 km · Brooklin 64 km · Uxbridge 68 km · Whitby 68 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Peterborough (44.3001°, -78.3162°, elevation 188 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).