Chilliwack-Downtown in Summer
In summer (June, July and August), Chilliwack-Downtown sees average daytime highs around 20°C and overnight lows near 10°C, with 237 mm of rain over about 32 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 16°C in early June to 19°C by late August. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels dry.
Summer is Chilliwack-Downtown's best season of the year to visit on our travel score. For the whole year in context, see Chilliwack-Downtown's year-round climate.
- Avg daytime high
- 20°C
- warmest season of the year
- Avg overnight low
- 10°C
- Rainfall
- 237 mm
- 32 wet days
- Avg wind
- 5 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Chilliwack-Downtown in Summer
Over the season highs climb from about 16°C in early June to 19°C by late August.
A typical summer day in Chilliwack-Downtown reaches about 20°C and drops to 10°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Chilliwack-Downtown
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Chilliwack-Downtown weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| 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 Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Chilliwack-Downtown gets around 237 mm of rain over 32 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 42 min in early June to 13 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.4 kWh/m².
Hazard calendar for Chilliwack-Downtown
None of Chilliwack-Downtown's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Chilliwack-Downtown's rainy season runs October–April, when most of the year's rain falls.
Is summer a good time to visit Chilliwack-Downtown?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Chilliwack-Downtown for sightseeing.
What to pack for Chilliwack-Downtown in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Chilliwack-Downtown sees daytime highs around 20°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 32 days see rain.
UV index in Chilliwack-Downtown in Summer
Clear-sky midday UV across summer averages 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 Chilliwack-Downtown 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 |
Air quality in Chilliwack-Downtown in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Chilliwack-Downtown is worst in August — around 21 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 7 | 9 | 11 | 11 | 12 | 12 | 13 | 21 | 12 | 11 | 9 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 12 | Good |
| Jun | 12 | Good |
| Jul | 13 | Moderate |
| Aug | 21 | Moderate |
| Sep | 12 | Good |
| Oct | 11 | Good |
| Nov | 9 | Good |
| Dec | 6 | Good |
Where is Chilliwack-Downtown?
Chilliwack-Downtown sits at 49.2°N, 122.0°W, 8 m above sea level, in Canada. The nearest listed city is Chilliwack, 1.0 km away.
Topography around Chilliwack-Downtown
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chilliwack-Downtown.
Within 3 km, the terrain around Chilliwack-Downtown has only modest variations in elevation — a maximum elevation change of 107 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-Downtown is covered by trees (28%), artificial surfaces (28%) and grassland (26%) within 3 km, trees (62%) within 16 km, and trees (72%) within 80 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-Downtown (49.1643°, -121.9591°, elevation 8 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.