Ancaster weather in August

In August, Ancaster sees average daytime highs of 25°C and overnight lows near 16°C, with 75 mm of rain across 10 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 6th-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 comfortable.

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 Ancaster's 2nd-clearest and 12th-windiest month. For the whole year in context, see Ancaster's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
16°
11th coldest
Rainfall
75 mm
10 wet days
Daylight
13 h 48 min
5:30 AM – 7:18 PM
Cloud cover
56%
2nd clearest
Wind
10 km/h
12th windiest
Solar energy
5.31 kWh/m²
Travel score
6.8
out of 10

Ancaster is former town in Hamilton, Ontario, Canada.

Density
230/km²
people per km²

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 Ancaster reaches about 25°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 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°35°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62616
72616
82616
92616
102616
112616
122616
132616
142516
152516
162516
172516
182516
192516
202515
212515
222515
232515
242515
252515
262515
272515
282515
292515
302415
312415

How August really feels in Ancaster

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.

Ancaster weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -9°6410.88.29.20.0
Feb-0° / -8°528.26.410.20.0
Mar / -4°659.94.611.60.4
Apr12° / 8911.81.913.23.1
May19° / 8511.6014.45.7
Jun24° / 14°9212.1015.16.5
Jul26° / 16°8410.6014.96.5
Aug25° / 16°7510013.86.8
Sep21° / 12°759.4012.36.7
Oct14° / 7810.90.110.84.1
Nov / 719.92.59.51.1
Dec / -5°6310.16.58.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35644
45644
55644
65545
75545
85545
95545
105446
115446
125446
135446
145446
155446
165446
175446
185446
195446
205446
215347
225446
235446
245446
255446
265446
275446
285446
295446
305347
315347

Chance of precipitation in August

Any precipitation

Ancaster gets around 75 mm of rain over 10 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 36% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
235
335
435
535
635
735
835
935
1035
1135
1234
1334
1434
1534
1633
1733
1832
1932
2031
2131
2230
2330
2429
2529
2629
2729
2829
2929
3029
3130

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 19% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1222629203
2222629203
3222728203
4222728203
5232727203
6232727203
7232727203
8232727203
9242727193
10242727193
11242727183
12252828173
13252828173
14252828163
15242929163
16242929153
17242929153
18242929153
19242929143
20252929143
21253029142
22253028142
23263028152
24263027152
25273026152
26273026152
27283025152
28293024152
29303023152
30313022152
31323021152

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 10 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
3110calm

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 5:14 AM to 5:47 AM, and sunset from 7:38 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:147:38
214.45:157:37
314.35:167:36
414.35:177:34
514.35:187:33
614.25:197:32
714.25:207:31
814.15:217:29
914.15:237:28
1014.05:247:27
1114.05:257:25
1214.05:267:24
1313.95:277:22
1413.95:287:21
1513.85:297:19
1613.85:307:18
1713.75:327:16
1813.75:337:15
1913.75:347:13
2013.65:357:11
2113.65:367:10
2213.55:377:08
2313.55:387:06
2413.45:397:05
2513.45:417:03
2613.35:427:01
2713.35:437:00
2813.25:446:58
2913.25:456:56
3013.15:466:54
3113.15:476:53

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.31 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.31 kWh/m² in June across the year — August's 5.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.4Bright
135.4Bright
145.4Bright
155.3Bright
165.3Bright
175.3Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.9Bright
304.8Bright
314.8Bright
Planning a trip in August

Is August a good time to visit Ancaster?

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

6.8
Sightseeing
1st-best month of the year
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Ancaster in August

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

In August, Ancaster sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Ancaster 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 34 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 Ancaster 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 Ancaster peaks around June 22 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Ancaster 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 Ancaster 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 Ancaster?

Ancaster sits at 43.2°N, 80.0°W, 253 m above sea level, in Canada. The nearest listed city is Hamilton, 12 km away.

Topography around Ancaster

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

Within 3 km, the terrain around Ancaster has only modest variations in elevation — a maximum elevation change of 162 m around an average of 230 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 227 m; within 80 km, significant variations in elevation — a maximum elevation change of 457 m.

The land around Ancaster is covered by trees (60%) within 3 km, cropland (35%) and trees (32%) within 16 km, and cropland (36%), water (26%) and trees (22%) within 80 km.

3 km
162 m
16 km
227 m
80 km
457 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Hamilton 12 km · Waterdown 15 km · Stoney Creek 18 km · Burlington 22 km · Brantford 25 km · Christopher-Champlain 29 km · Cambridge 31 km · Brant 31 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 Ancaster (43.2181°, -79.9872°, elevation 253 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).