Peterborough weather in August

In August, Peterborough sees average daytime highs of 25°C and overnight lows near 15°C, with 85 mm of rain across 10.5 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 24°C by the end. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Peterborough's 1st-clearest and 12th-windiest month. For the whole year in context, see Peterborough's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
85 mm
10.5 wet days
Daylight
13 h 54 min
5:22 AM – 7:13 PM
Cloud cover
56%
1st clearest
Wind
10 km/h
12th windiest
Solar energy
5.44 kWh/m²
Travel score
6.9
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 August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 24°C by the end.

A typical August day in Peterborough reaches about 25°C in the afternoon and slips back to 15°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 29°C. Set against its neighbours, August runs about 1°C cooler than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52516
62516
72516
82516
92516
102516
112516
122515
132515
142515
152515
162515
172515
182515
192515
202515
212415
222415
232415
242415
252414
262414
272414
282414
292414
302414
312414

How August really feels in Peterborough

Once humidity and wind are folded in, August 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

August 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 August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45149
55248
65248
75248
85248
95248
105347
115347
125347
135446
145446
155446
165446
175446
185446
195446
205446
215446
225446
235545
245545
255545
265545
275545
285545
295446
305446
315347

Chance of precipitation in August

Any precipitation

Peterborough gets around 85 mm of rain over 10.5 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
334
434
534
634
734
834
934
1034
1135
1235
1335
1435
1535
1635
1735
1835
1935
2034
2134
2234
2333
2433
2533
2632
2732
2832
2932
3031
3131

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1223227182
2233226181
3233226181
4233225181
5243125181
6243125181
7243125181
8253025181
9263026181
10262926171
11272926171
12272926161
13282927151
14282827151
15292928141
16292828141
17292828141
18292828141
19302828131
20302827131
21312727131
22322727131
23322727131
24332626131
25342626131
26352625131
27362524131
28372524131
29382523131
30392523131
31402422121

Wind in August

Winds average 10 km/h in August, the calmest month.

Across August, 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 30 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 5:04 AM to 5:39 AM, and sunset from 7:34 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:047:34
214.55:057:33
314.45:077:32
414.45:087:31
514.35:097:29
614.35:107:28
714.35:117:27
814.25:127:25
914.25:137:24
1014.15:157:22
1114.15:167:21
1214.05:177:19
1314.05:187:18
1413.95:197:16
1513.95:207:15
1613.95:227:13
1713.85:237:11
1813.85:247:10
1913.75:257:08
2013.75:267:07
2113.65:287:05
2213.65:297:03
2313.55:307:01
2413.55:317:00
2513.45:326:58
2613.45:346:56
2713.35:356:54
2813.35:366:53
2913.25:376:51
3013.25:386:49
3113.15:396:47

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.44 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 — August's 5.44 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Peterborough?

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

6.9
Sightseeing
1st-best month of the year
6.0
Beach & pool
2nd-best month of the year

August 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 August

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

In August, Peterborough sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Peterborough in August

The nearest coast averages about 21°C in August — 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 August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. 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
August 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).