Chilliwack weather in August

In August, Chilliwack sees average daytime highs of 21°C and overnight lows near 11°C, with 74 mm of rain across 8.6 wet days and about 14.2 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 38% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 hours at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Chilliwack's 2nd-clearest and 11th-windiest month. For the whole year in context, see Chilliwack's year-round climate.

Daytime high: 21°; 1st warmest
Overnight low: 11°; 12th coldest
Rainfall: 74 mm; 8.6 wet days
Daylight: 14 h 12 min; 5:06 AM – 7:18 PM
Cloud cover: 51%; 2nd clearest
Wind: 4 km/h; 11th windiest
Solar energy: 5.13 kWh/m²
Travel score: 6.8; out of 10

Chilliwack is city in British Columbia, Canada.

Air quality: Good; PM2.5 6 µg/m³ · 2019
Density: 388/km²; people per km²

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

← July Chilliwack year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 19°C by the end.

A typical August day in Chilliwack reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 27°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	22	22	22	22	22	22	22	22	22	22	22	21	21	21	21	21	21	21	21	21	21	20	20	20	20	20	20	20	20	19	19
Avg low (°C)	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	10	10	10	10	10	10	10

	Avg high (°C)	Avg low (°C)
1	22	12
2	22	12
3	22	12
4	22	12
5	22	12
6	22	12
7	22	12
8	22	11
9	22	11
10	22	11
11	22	11
12	21	11
13	21	11
14	21	11
15	21	11
16	21	11
17	21	11
18	21	11
19	21	11
20	21	11
21	21	11
22	20	11
23	20	11
24	20	11
25	20	10
26	20	10
27	20	10
28	20	10
29	20	10
30	19	10
31	19	10

How August really feels in Chilliwack

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Chilliwack weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	2° / -2°	342	19.7	15.8	8.5	0.0
Feb	4° / -2°	212	16.3	12.4	9.8	0.0
Mar	6° / -1°	263	20	14.5	11.6	0.5
Apr	10° / 2°	172	17.3	7.3	13.4	1.9
May	15° / 6°	122	14.8	2	15	3.9
Jun	17° / 8°	102	14.4	0.1	15.9	4.8
Jul	21° / 11°	61	8.8	0	15.6	6.7
Aug	21° / 11°	74	8.6	0	14.2	6.8
Sep	17° / 8°	124	11.1	0	12.4	5.5
Oct	11° / 5°	256	17.4	2.2	10.5	2.4
Nov	5° / 1°	372	20.5	12.1	8.9	0.2
Dec	2° / -2°	325	20	16.8	8.1	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	64	63	62	62	62	60	60	60	59	59	58	57	56	56	56	55	55	54	54	52	52	51	50	49	49	48	48	48	48	47	47
Cloudier (%)	36	37	38	38	38	40	40	40	41	41	42	43	44	44	44	45	45	46	46	48	48	49	50	51	51	52	52	52	52	53	53

	Clearer (%)	Cloudier (%)
1	64	36
2	63	37
3	62	38
4	62	38
5	62	38
6	60	40
7	60	40
8	60	40
9	59	41
10	59	41
11	58	42
12	57	43
13	56	44
14	56	44
15	56	44
16	55	45
17	55	45
18	54	46
19	54	46
20	52	48
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	48	52
29	48	52
30	47	53
31	47	53

Chance of precipitation in August

Any precipitation

Chilliwack gets around 74 mm of rain over 8.6 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 27% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	21	21	22	22	22	23	23	24	24	25	25	25	26	26	26	27	27	27	28	28	29	30	31	31	32	32	33	33	34	34	34

	Rain chance (%)
1	21
2	21
3	22
4	22
5	22
6	23
7	23
8	24
9	24
10	25
11	25
12	25
13	26
14	26
15	26
16	27
17	27
18	27
19	28
20	28
21	29
22	30
23	31
24	31
25	32
26	32
27	33
28	33
29	34
30	34
31	34

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	75	75	75	76	76	76	76	76	76	76	75	76	77	78	79	80	81	81	82	83	84	85	86	87	88	89	90	90	91	91	92
Comfortable (%)	23	23	23	23	23	23	23	23	23	23	23	22	22	21	20	19	18	18	17	16	15	14	13	12	12	11	10	10	9	9	8
Humid (%)	2	2	2	1	1	1	1	1	1	1	2	2	1	1	1	1	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	75	23	2
2	75	23	2
3	75	23	2
4	76	23	1
5	76	23	1
6	76	23	1
7	76	23	1
8	76	23	1
9	76	23	1
10	76	23	1
11	75	23	2
12	76	22	2
13	77	22	1
14	78	21	1
15	79	20	1
16	80	19	1
17	81	18	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	86	13	1
24	87	12	1
25	88	12	0
26	89	11	0
27	90	10	0
28	90	10	0
29	91	9	0
30	91	9	0
31	92	8	0

Wind in August

Winds average 4 km/h in August.

Across August, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 hours at the start of August to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over August. Sunrise moves from 4:44 AM to 5:28 AM, and sunset from 7:43 PM to 6:48 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	15.0	14.9	14.9	14.8	14.8	14.7	14.7	14.6	14.6	14.5	14.5	14.4	14.4	14.3	14.3	14.2	14.2	14.1	14.0	14.0	13.9	13.9	13.8	13.8	13.7	13.6	13.6	13.5	13.5	13.4	13.3
Sunrise (AM)	4:44	4:46	4:47	4:48	4:50	4:51	4:53	4:54	4:55	4:57	4:58	5:00	5:01	5:03	5:04	5:06	5:07	5:08	5:10	5:11	5:13	5:14	5:16	5:17	5:19	5:20	5:22	5:23	5:25	5:26	5:28
Sunset (PM)	7:43	7:42	7:40	7:39	7:37	7:36	7:34	7:32	7:31	7:29	7:27	7:26	7:24	7:22	7:20	7:18	7:16	7:14	7:13	7:11	7:09	7:07	7:05	7:03	7:01	6:59	6:56	6:54	6:52	6:50	6:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	15.0	4:44	7:43
2	14.9	4:46	7:42
3	14.9	4:47	7:40
4	14.8	4:48	7:39
5	14.8	4:50	7:37
6	14.7	4:51	7:36
7	14.7	4:53	7:34
8	14.6	4:54	7:32
9	14.6	4:55	7:31
10	14.5	4:57	7:29
11	14.5	4:58	7:27
12	14.4	5:00	7:26
13	14.4	5:01	7:24
14	14.3	5:03	7:22
15	14.3	5:04	7:20
16	14.2	5:06	7:18
17	14.2	5:07	7:16
18	14.1	5:08	7:14
19	14.0	5:10	7:13
20	14.0	5:11	7:11
21	13.9	5:13	7:09
22	13.9	5:14	7:07
23	13.8	5:16	7:05
24	13.8	5:17	7:03
25	13.7	5:19	7:01
26	13.6	5:20	6:59
27	13.6	5:22	6:56
28	13.5	5:23	6:54
29	13.5	5:25	6:52
30	13.4	5:26	6:50
31	13.3	5:28	6:48

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.13 kWh/m².

For context, solar energy here swings from a low near 0.77 kWh/m² to a high of 5.91 kWh/m² in July across the year — August's 5.13 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.8	5.8	5.8	5.7	5.7	5.7	5.6	5.6	5.5	5.5	5.4	5.4	5.3	5.3	5.2	5.2	5.1	5.1	5.0	5.0	4.9	4.9	4.8	4.7	4.7	4.6	4.6	4.5	4.5	4.4	4.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.8	Bright
2	5.8	Bright
3	5.8	Bright
4	5.7	Bright
5	5.7	Bright
6	5.7	Bright
7	5.6	Bright
8	5.6	Bright
9	5.5	Bright
10	5.5	Bright
11	5.4	Bright
12	5.4	Bright
13	5.3	Bright
14	5.3	Bright
15	5.2	Bright
16	5.2	Bright
17	5.1	Bright
18	5.1	Bright
19	5.0	Bright
20	5.0	Bright
21	4.9	Bright
22	4.9	Bright
23	4.8	Bright
24	4.7	Bright
25	4.7	Bright
26	4.6	Bright
27	4.6	Bright
28	4.5	Bright
29	4.5	Bright
30	4.4	Bright
31	4.4	Bright

Planning a trip in August

Hazard calendar for Chilliwack

In seasonPeak

None of Chilliwack's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Chilliwack's rainy season runs October–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is August a good time to visit Chilliwack?

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

4.1

Beach & pool

1st-best month of the year

August is a reasonable time to visit Chilliwack for sightseeing.

What to pack for Chilliwack in August

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

In August, Chilliwack sees daytime highs around 21°C and nights near 11°C. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

UV index in Chilliwack 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 Chilliwack peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 17 at about 1 (low).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	1	4	4	7	6	8	6	4	3	1	1
Level	Low	Low	Moderate	Moderate	High	High	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	4	Moderate
Apr	4	Moderate
May	7	High
Jun	6	High
Jul	8	Very high
Aug	6	High
Sep	4	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Location & terrain

Where is Chilliwack?

Chilliwack sits at 49.2°N, 122.0°W, 11 m above sea level, in Canada. The nearest listed city is Chilliwack-Downtown, 1.0 km away.

Topography around Chilliwack

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

Within 3 km, the terrain around Chilliwack has only modest variations in elevation — a maximum elevation change of 131 m around an average of 12 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,683 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,275 m.

The land around Chilliwack is covered by grassland (29%), trees (26%) and artificial surfaces (26%) within 3 km, trees (62%) within 16 km, and trees (72%) within 80 km.

3 km

131 m

grassland 29%

16 km

1,683 m

trees 62%

80 km

3,275 m

trees 72%

treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater

← July Chilliwack year-round climate September →Best places to visit in August

August weather nearby: Chilliwack-Downtown 1.0 km · Vedder Crossing 7.0 km · Abbotsford 25 km · Mission 26 km · Townline 32 km · Haney 47 km · Maple Ridge 48 km · Walnut Grove 50 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

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 Chilliwack (49.1664°, -121.9526°, elevation 11 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. 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).

	Avg high (°C)	Avg low (°C)
1	22	12
2	22	12
3	22	12
4	22	12
5	22	12
6	22	12
7	22	12
8	22	11
9	22	11
10	22	11
11	22	11
12	21	11
13	21	11
14	21	11
15	21	11
16	21	11
17	21	11
18	21	11
19	21	11
20	21	11
21	21	11
22	20	11
23	20	11
24	20	11
25	20	10
26	20	10
27	20	10
28	20	10
29	20	10
30	19	10
31	19	10

	Clearer (%)	Cloudier (%)
1	64	36
2	63	37
3	62	38
4	62	38
5	62	38
6	60	40
7	60	40
8	60	40
9	59	41
10	59	41
11	58	42
12	57	43
13	56	44
14	56	44
15	56	44
16	55	45
17	55	45
18	54	46
19	54	46
20	52	48
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	48	52
29	48	52
30	47	53
31	47	53

	Rain chance (%)
1	21
2	21
3	22
4	22
5	22
6	23
7	23
8	24
9	24
10	25
11	25
12	25
13	26
14	26
15	26
16	27
17	27
18	27
19	28
20	28
21	29
22	30
23	31
24	31
25	32
26	32
27	33
28	33
29	34
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)
1	75	23	2
2	75	23	2
3	75	23	2
4	76	23	1
5	76	23	1
6	76	23	1
7	76	23	1
8	76	23	1
9	76	23	1
10	76	23	1
11	75	23	2
12	76	22	2
13	77	22	1
14	78	21	1
15	79	20	1
16	80	19	1
17	81	18	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	86	13	1
24	87	12	1
25	88	12	0
26	89	11	0
27	90	10	0
28	90	10	0
29	91	9	0
30	91	9	0
31	92	8	0

	Avg high (°C)	Avg low (°C)
1	22	12
2	22	12
3	22	12
4	22	12
5	22	12
6	22	12
7	22	12
8	22	11
9	22	11
10	22	11
11	22	11
12	21	11
13	21	11
14	21	11
15	21	11
16	21	11
17	21	11
18	21	11
19	21	11
20	21	11
21	21	11
22	20	11
23	20	11
24	20	11
25	20	10
26	20	10
27	20	10
28	20	10
29	20	10
30	19	10
31	19	10

	Clearer (%)	Cloudier (%)
1	64	36
2	63	37
3	62	38
4	62	38
5	62	38
6	60	40
7	60	40
8	60	40
9	59	41
10	59	41
11	58	42
12	57	43
13	56	44
14	56	44
15	56	44
16	55	45
17	55	45
18	54	46
19	54	46
20	52	48
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	48	52
29	48	52
30	47	53
31	47	53

	Rain chance (%)
1	21
2	21
3	22
4	22
5	22
6	23
7	23
8	24
9	24
10	25
11	25
12	25
13	26
14	26
15	26
16	27
17	27
18	27
19	28
20	28
21	29
22	30
23	31
24	31
25	32
26	32
27	33
28	33
29	34
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)
1	75	23	2
2	75	23	2
3	75	23	2
4	76	23	1
5	76	23	1
6	76	23	1
7	76	23	1
8	76	23	1
9	76	23	1
10	76	23	1
11	75	23	2
12	76	22	2
13	77	22	1
14	78	21	1
15	79	20	1
16	80	19	1
17	81	18	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	86	13	1
24	87	12	1
25	88	12	0
26	89	11	0
27	90	10	0
28	90	10	0
29	91	9	0
30	91	9	0
31	92	8	0

	Avg high (°C)	Avg low (°C)
1	22	12
2	22	12
3	22	12
4	22	12
5	22	12
6	22	12
7	22	12
8	22	11
9	22	11
10	22	11
11	22	11
12	21	11
13	21	11
14	21	11
15	21	11
16	21	11
17	21	11
18	21	11
19	21	11
20	21	11
21	21	11
22	20	11
23	20	11
24	20	11
25	20	10
26	20	10
27	20	10
28	20	10
29	20	10
30	19	10
31	19	10

	Clearer (%)	Cloudier (%)
1	64	36
2	63	37
3	62	38
4	62	38
5	62	38
6	60	40
7	60	40
8	60	40
9	59	41
10	59	41
11	58	42
12	57	43
13	56	44
14	56	44
15	56	44
16	55	45
17	55	45
18	54	46
19	54	46
20	52	48
21	52	48
22	51	49
23	50	50
24	49	51
25	49	51
26	48	52
27	48	52
28	48	52
29	48	52
30	47	53
31	47	53

	Rain chance (%)
1	21
2	21
3	22
4	22
5	22
6	23
7	23
8	24
9	24
10	25
11	25
12	25
13	26
14	26
15	26
16	27
17	27
18	27
19	28
20	28
21	29
22	30
23	31
24	31
25	32
26	32
27	33
28	33
29	34
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)
1	75	23	2
2	75	23	2
3	75	23	2
4	76	23	1
5	76	23	1
6	76	23	1
7	76	23	1
8	76	23	1
9	76	23	1
10	76	23	1
11	75	23	2
12	76	22	2
13	77	22	1
14	78	21	1
15	79	20	1
16	80	19	1
17	81	18	1
18	81	18	1
19	82	17	1
20	83	16	1
21	84	15	1
22	85	14	1
23	86	13	1
24	87	12	1
25	88	12	0
26	89	11	0
27	90	10	0
28	90	10	0
29	91	9	0
30	91	9	0
31	92	8	0