Milton weather in August

In August, Milton sees average daytime highs of 25°C and overnight lows near 15°C, with 72 mm of rain across 9.5 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 7th-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 32% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Milton's 2nd-clearest and 12th-windiest month. For the whole year in context, see Milton's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
72 mm
9.5 wet days
Daylight
13 h 48 min
5:29 AM – 7:18 PM
Cloud cover
56%
2nd clearest
Wind
10 km/h
12th windiest
Solar energy
5.25 kWh/m²
Travel score
6.9
out of 10

Milton is town in Halton Region, Ontario, Canada.

Density
363/km²
people per km²
Founded
1818

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 Milton 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°20°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62616
72616
82616
92616
102516
112516
122516
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262415
272415
282414
292414
302414
312414

How August really feels in Milton

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.

Milton weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -9°6310.28.39.10.0
Feb-0° / -9°5286.510.20.0
Mar / -4°619.5511.60.4
Apr12° / 8411.52.213.23.0
May18° / 8311.2014.55.6
Jun24° / 13°8811.8015.26.5
Jul26° / 16°8110.8014.96.6
Aug25° / 15°729.5013.86.9
Sep21° / 11°749.1012.36.6
Oct14° / 7610.90.210.84.0
Nov / -0°709.92.89.50.9
Dec / -5°62106.58.80.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35545
45545
55545
65545
75446
85545
95446
105446
115446
125545
135545
145446
155446
165446
175446
185446
195446
205446
215446
225545
235446
245545
255545
265644
275644
285644
295644
305644
315644

Chance of precipitation in August

Any precipitation

Milton gets around 72 mm of rain over 9.5 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 32% and peaks near 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1134
1234
1334
1434
1533
1633
1732
1831
1931
2030
2129
2229
2328
2427
2527
2627
2726
2827
2927
3027
3128

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 (%)
1242929172
2242928172
3252928172
4252928172
5252927171
6262927171
7262927171
8272827171
9272827161
10282827161
11282827161
12292827161
13292827151
14292827151
15292827151
16292827141
17292827141
18292927141
19292927141
20292927141
21292927141
22302927141
23302926141
24312926141
25312925141
26322925141
27332924131
28342923131
29352923131
30362822131
31372821131

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 24 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 78 minutes over August. Sunrise moves from 5:13 AM to 5:47 AM, and sunset from 7:38 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:137:38
214.45:147:37
314.45:157:36
414.35:167:35
514.35:177:34
614.25:187:32
714.25:197:31
814.25:207:30
914.15:217:28
1014.15:237:27
1114.05:247:25
1214.05:257:24
1313.95:267:22
1413.95:277:21
1513.95:287:19
1613.85:297:18
1713.85:317:16
1813.75:327:15
1913.75:337:13
2013.65:347:11
2113.65:357:10
2213.55:367:08
2313.55:377:06
2413.45:397:05
2513.45:407:03
2613.35:417:01
2713.35:427:00
2813.25:436:58
2913.25:446:56
3013.15:466:54
3113.15:476:52

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.25 kWh/m².

For context, solar energy here swings from a low near 1.32 kWh/m² to a high of 6.25 kWh/m² in June across the year — August's 5.25 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.6Bright
55.6Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in August

Is August a good time to visit Milton?

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
6.2
Beach & pool
2nd-best month of the year

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

What to pack for Milton in August

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

In August, Milton sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Milton 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 26 km away) is warmest in August at about 21°C and coldest in February near 3°C.

It's comfortable for a long swim from Jul 22 to Sep 1 — about 1.4 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May8Bracing
Jun15Cool
Jul20Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov8Bracing
Dec5Bracing

UV index in Milton in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Milton peaks around June 22 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Milton in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Milton is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1515 µg/m³Nov 218 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar13Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep13Moderate
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Milton?

Milton sits at 43.5°N, 79.9°W, 195 m above sea level, in Canada. The nearest listed city is Halton Hills, 14 km away.

Topography around Milton

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

Within 3 km, the terrain around Milton has only modest variations in elevation — a maximum elevation change of 132 m around an average of 208 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 297 m; within 80 km, significant variations in elevation — a maximum elevation change of 461 m.

The land around Milton is covered by artificial surfaces (51%) and trees (25%) within 3 km, trees (39%) and cropland (24%) within 16 km, and cropland (37%) and trees (25%) within 80 km.

3 km
132 m
16 km
297 m
80 km
461 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Halton Hills 14 km · Burlington 15 km · Georgetown 15 km · Oakville 18 km · Mississauga 19 km · Waterdown 20 km · Brampton 21 km · Etobicoke 29 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 Milton (43.5168°, -79.8829°, elevation 195 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).