Norfolk County in Summer
In summer (June, July and August), Norfolk County sees average daytime highs around 24°C and overnight lows near 18°C, with 300 mm of rain over about 34 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 21°C in early June to 24°C by late August. The sky is clear or mostly clear about 34% of the time across summer, and the air most often feels humid.
Summer is Norfolk County's best season of the year to visit on our travel score. For the whole year in context, see Norfolk County's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 300 mm
- 34 wet days
- Avg wind
- 14 km/h
- Travel score
- 6.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Norfolk County in Summer
Over the season highs climb from about 21°C in early June to 24°C by late August.
A typical summer day in Norfolk County reaches about 24°C and drops to 18°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Norfolk County
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.
Norfolk County 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 | -1° / -7° | 76 | 11.8 | 8.6 | 9.2 | 0.0 |
| Feb | -1° / -7° | 59 | 8.9 | 6.7 | 10.2 | 0.0 |
| Mar | 4° / -3° | 75 | 10.1 | 4.7 | 11.6 | 0.1 |
| Apr | 10° / 3° | 97 | 12 | 1.5 | 13.1 | 2.1 |
| May | 17° / 10° | 93 | 12.2 | 0 | 14.4 | 5.2 |
| Jun | 23° / 16° | 108 | 12.3 | 0 | 15.1 | 6.5 |
| Jul | 25° / 19° | 104 | 11.6 | 0 | 14.8 | 6.6 |
| Aug | 25° / 18° | 89 | 10.5 | 0 | 13.7 | 6.9 |
| Sep | 21° / 14° | 85 | 9.4 | 0 | 12.3 | 6.6 |
| Oct | 14° / 8° | 89 | 11.6 | 0.1 | 10.8 | 4.0 |
| Nov | 7° / 2° | 81 | 10.5 | 2.4 | 9.5 | 1.1 |
| Dec | 2° / -2° | 78 | 11.7 | 7.1 | 8.9 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 34% of the time across summer.
Chance of precipitation in Summer
Norfolk County gets around 300 mm of rain over 34 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 14 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 54 min in early June to 13 h 06 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 6.3 kWh/m².
Is summer a good time to visit Norfolk County?
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 Norfolk County for sightseeing.
What to pack for Norfolk County in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Norfolk County sees daytime highs around 24°C and nights near 18°C. Pack sun protection. Worth having: light clothes and rain gear. About 34 days see rain.
Sea temperature near Norfolk County in Summer
The nearest coast averages about 20°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 23 km away) is warmest in August at about 23°C and coldest in February near 1°C.
It's comfortable for a long swim from Jul 6 to Sep 19 — about 2.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 2 | 1 | 1 | 4 | 9 | 17 | 22 | 23 | 21 | 16 | 10 | 6 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 2 | Bracing |
| Feb | 1 | Bracing |
| Mar | 1 | Bracing |
| Apr | 4 | Bracing |
| May | 9 | Bracing |
| Jun | 17 | Cool |
| Jul | 22 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 16 | Cool |
| Nov | 10 | Bracing |
| Dec | 6 | Bracing |
UV index in Norfolk County in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Norfolk County peaks around June 23 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Norfolk County 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 Norfolk County is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 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) | 8 | 10 | 12 | 14 | 16 | 16 | 16 | 14 | 12 | 8 | 7 | 7 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 14 | Moderate |
| May | 16 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 14 | Moderate |
| Sep | 12 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Norfolk County?
Norfolk County sits at 42.8°N, 80.4°W, 235 m above sea level, in Canada. The nearest listed city is Tillsonburg, 28 km away.
Topography around Norfolk County
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Norfolk County.
Within 3 km, the terrain around Norfolk County has only modest variations in elevation — a maximum elevation change of 38 m around an average of 237 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 111 m; within 80 km, significant variations in elevation — a maximum elevation change of 369 m.
The land around Norfolk County is covered by trees (44%) and cropland (40%) within 3 km, cropland (52%) and trees (31%) within 16 km, and water (41%) and cropland (34%) 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 Norfolk County (42.8334°, -80.383°, elevation 235 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.