Corner Brook in Summer
In summer (June, July and August), Corner Brook sees average daytime highs around 18°C and overnight lows near 10°C, with 311 mm of precipitation over about 41 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs climb from about 12°C in early June to 18°C by late August. The sky is clear or mostly clear about 24% of the time across summer, and the air most often feels dry.
Summer is Corner Brook's best season of the year to visit on our travel score. For the whole year in context, see Corner Brook's year-round climate.
- Avg daytime high
- 18°C
- warmest season of the year
- Avg overnight low
- 10°C
- Precipitation
- 311 mm
- 41 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Corner Brook in Summer
Over the season highs climb from about 12°C in early June to 18°C by late August.
A typical summer day in Corner Brook reaches about 18°C and drops to 10°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Corner Brook
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.
Corner Brook 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 | -5° / -11° | 115 | 18 | 20.6 | 8.5 | 0.0 |
| Feb | -5° / -12° | 101 | 14.6 | 17.3 | 9.8 | 0.0 |
| Mar | -1° / -8° | 96 | 13.9 | 13.9 | 11.6 | 0.0 |
| Apr | 4° / -3° | 85 | 13 | 8.9 | 13.4 | 0.2 |
| May | 10° / 2° | 84 | 13.1 | 2.9 | 15 | 2.0 |
| Jun | 15° / 7° | 86 | 12.2 | 0.1 | 15.9 | 4.1 |
| Jul | 19° / 11° | 104 | 13.8 | 0 | 15.6 | 5.4 |
| Aug | 19° / 13° | 121 | 14.6 | 0 | 14.2 | 5.5 |
| Sep | 16° / 9° | 120 | 14 | 0.1 | 12.4 | 4.2 |
| Oct | 10° / 4° | 128 | 16.3 | 2.3 | 10.5 | 1.8 |
| Nov | 4° / -0° | 128 | 17.8 | 11 | 8.9 | 0.1 |
| Dec | -1° / -6° | 126 | 18.8 | 18.6 | 8.1 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 24% of the time across summer.
Chance of precipitation in Summer
Corner Brook gets around 311 mm of rain and snow over 41 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 10 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 4.9 kWh/m².
Is summer a good time to visit Corner Brook?
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 Corner Brook for sightseeing.
What to pack for Corner Brook in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Corner Brook sees daytime highs around 18°C and nights near 10°C. Pack rain gear. Worth having: a warm layer and sun protection. About 41 days see rain.
Sea temperature near Corner Brook in Summer
The nearest coast averages about 12°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 36 km away) is warmest in August at about 16°C and coldest in March near -0°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 1 | 0 | 0 | 1 | 3 | 8 | 13 | 16 | 14 | 9 | 6 | 3 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 1 | Bracing |
| Feb | 0 | Bracing |
| Mar | 0 | Bracing |
| Apr | 1 | Bracing |
| May | 3 | Bracing |
| Jun | 8 | Bracing |
| Jul | 13 | Bracing |
| Aug | 16 | Cool |
| Sep | 14 | Bracing |
| Oct | 9 | Bracing |
| Nov | 6 | Bracing |
| Dec | 3 | Bracing |
UV index in Corner Brook in Summer
Clear-sky midday UV across summer averages 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 Corner Brook peaks around June 17 at about 7 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | Very high | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 7 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Corner Brook?
Corner Brook sits at 49.0°N, 58.0°W, 17 m above sea level, in Canada. The nearest listed city is Saint-Pierre, 275 km away.
Topography around Corner Brook
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Corner Brook.
Within 3 km, the terrain around Corner Brook has significant variations in elevation — a maximum elevation change of 347 m around an average of 99 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 657 m; within 80 km, large variations in elevation — a maximum elevation change of 809 m.
The land around Corner Brook is covered by trees (47%) and water (27%) within 3 km, trees (67%) and grassland (21%) within 16 km, and trees (44%), water (30%) and grassland (24%) 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 Corner Brook (48.95°, -57.952°, elevation 17 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.