Kingston weather in August

In August, Kingston sees average daytime highs of 24°C and overnight lows near 18°C, with 96 mm of rain across 11.1 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 23°C by the end. The sky is clear or mostly clear about 35% of the time in August, and the air most often feels humid.

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 Kingston's 1st-clearest and 12th-windiest month. For the whole year in context, see Kingston's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
96 mm
11.1 wet days
Daylight
13 h 54 min
5:14 AM – 7:06 PM
Cloud cover
55%
1st clearest
Wind
11 km/h
12th windiest
Solar energy
5.43 kWh/m²
Travel score
6.8
out of 10

Kingston is city in Ontario, Canada.

Air quality
Excellent
PM2.5 5 µg/m³ · 2019
Density
294/km²
people per km²
Founded
1673

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 25°C in the first days to 23°C by the end.

A typical August day in Kingston reaches about 24°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°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)
12519
22519
32519
42519
52519
62519
72518
82518
92518
102518
112518
122518
132518
142418
152418
162418
172418
182418
192418
202417
212417
222417
232417
242417
252417
262317
272317
282317
292316
302316
312316

How August really feels in Kingston

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.

Kingston weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -10°7410.88.89.10.0
Feb-2° / -9°599.17.210.20.0
Mar / -5°73105.811.60.0
Apr10° / 10111.5213.22.0
May17° / 10°8111.2014.55.1
Jun22° / 16°9711.4015.36.5
Jul25° / 19°9911.30156.7
Aug24° / 18°9611.1013.86.8
Sep20° / 13°9510.1012.36.3
Oct13° / 10412.70.210.83.5
Nov / 89112.69.40.8
Dec / -5°83127.48.70.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% 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 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55644
65644
75644
85644
95545
105545
115644
125644
135644
145644
155743
165743
175743
185743
195743
205743
215644
225644
235644
245644
255644
265644
275644
285644
295644
305644
315545

Chance of precipitation in August

Any precipitation

Kingston gets around 96 mm of rain over 11.1 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 36% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
337
437
537
637
738
838
938
1038
1138
1238
1338
1438
1538
1638
1737
1837
1937
2036
2135
2235
2334
2433
2533
2632
2731
2831
2930
3030
3130

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1718362810
2719352810
3819352810
4819342810
5820342810
6820332810
7920332810
892033289
992132289
10102132289
11102132288
12112232288
13112232287
14122232277
15122232277
16122332276
17132332266
18132332265
19132432265
20142432265
21142531254
22152531254
23152631244
24162630244
25162630234
26172730234
27182729224
28192729224
29192728214
30202828204
31212827204

Wind in August

Winds average 11 km/h in August, the calmest month.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 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
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3112calm

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 4:57 AM to 5:32 AM, and sunset from 7:27 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:577:27
214.54:587:26
314.44:597:24
414.45:017:23
514.35:027:22
614.35:037:20
714.35:047:19
814.25:057:18
914.25:067:16
1014.15:077:15
1114.15:097:13
1214.05:107:12
1314.05:117:10
1413.95:127:09
1513.95:137:07
1613.95:147:06
1713.85:167:04
1813.85:177:02
1913.75:187:01
2013.75:196:59
2113.65:206:57
2213.65:226:56
2313.55:236:54
2413.55:246:52
2513.45:256:51
2613.45:266:49
2713.35:276:47
2813.35:296:45
2913.25:306:43
3013.25:316:42
3113.15:326:40

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.43 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 6.29 kWh/m² in June across the year — August's 5.43 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.6Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.4Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in August

Is August a good time to visit Kingston?

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
5.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Kingston for sightseeing.

What to pack for Kingston in August

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

In August, Kingston sees daytime highs around 24°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Kingston in August

The nearest coast averages about 22°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 14 km away) is warmest in August at about 22°C and coldest in March near 1°C.

It's comfortable for a long swim from Jul 13 to Sep 12 — about 2 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan3Bracing
Feb2Bracing
Mar1Bracing
Apr3Bracing
May7Bracing
Jun15Bracing
Jul21Refreshing
Aug22Refreshing
Sep20Cool
Oct15Bracing
Nov10Bracing
Dec6Bracing

UV index in Kingston in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kingston peaks around July 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 12UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May7High
Jun7Very high
Jul8Very high
Aug5High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Kingston?

Kingston sits at 44.2°N, 76.5°W, 70 m above sea level, in Canada. The nearest listed city is Greater Napanee, 37 km away.

Topography around Kingston

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

Within 3 km, the terrain around Kingston has only modest variations in elevation — a maximum elevation change of 43 m around an average of 84 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 94 m; within 80 km, significant variations in elevation — a maximum elevation change of 487 m.

The land around Kingston is covered by water (49%) and artificial surfaces (25%) within 3 km, water (37%), trees (25%) and grassland (21%) within 16 km, and trees (47%) and water (30%) within 80 km.

3 km
43 m
16 km
94 m
80 km
487 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Greater Napanee 37 km · Watertown 54 km · Prince Edward 66 km · Belleville 72 km · Brockville 75 km · Oswego 86 km · Quinte West 87 km · Clay 119 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 Kingston (44.2298°, -76.481°, elevation 70 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).