Lyon 04 in Summer
In summer (June, July and August), Lyon 04 sees average daytime highs around 26°C and overnight lows near 15°C, with 236 mm of rain over about 31 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 23°C in early June to 25°C by late August. The sky is clear or mostly clear about 36% of the time across summer, and the air most often feels dry.
Summer is Lyon 04's best season of the year to visit on our travel score. For the whole year in context, see Lyon 04's year-round climate.
- Avg daytime high
- 26°C
- warmest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 236 mm
- 31 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Lyon 04 in Summer
Over the season highs climb from about 23°C in early June to 25°C by late August.
A typical summer day in Lyon 04 reaches about 26°C and drops to 15°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Lyon 04
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.
Lyon 04 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 | 7° / 1° | 69 | 12.5 | 2.5 | 8.9 | 0.7 |
| Feb | 8° / 1° | 56 | 10.2 | 2.2 | 10.1 | 1.4 |
| Mar | 13° / 4° | 60 | 10.8 | 0.8 | 11.6 | 3.5 |
| Apr | 16° / 6° | 81 | 11.8 | 0.3 | 13.3 | 4.9 |
| May | 20° / 10° | 90 | 12.5 | 0 | 14.7 | 5.9 |
| Jun | 24° / 14° | 81 | 11.7 | 0 | 15.5 | 6.6 |
| Jul | 27° / 16° | 78 | 10 | 0 | 15.2 | 6.7 |
| Aug | 27° / 15° | 77 | 9.6 | 0 | 13.9 | 6.9 |
| Sep | 22° / 12° | 93 | 9.6 | 0 | 12.3 | 6.7 |
| Oct | 17° / 9° | 99 | 11.6 | 0.1 | 10.7 | 5.0 |
| Nov | 11° / 4° | 100 | 12.4 | 0.9 | 9.3 | 2.4 |
| Dec | 7° / 2° | 74 | 12.3 | 1.8 | 8.5 | 0.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 36% of the time across summer.
Chance of precipitation in Summer
Lyon 04 gets around 236 mm of rain over 31 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 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 12 min in early June to 13 h 12 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 5.9 kWh/m².
Is summer a good time to visit Lyon 04?
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 Lyon 04 for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Lyon 04 in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Lyon 04 sees daytime highs around 26°C and nights near 15°C. Pack sun protection. Worth having: light clothes and rain gear. About 31 days see rain.
UV index in Lyon 04 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 Lyon 04 peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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) | 1 | 2 | 4 | 5 | 6 | 7 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 6 | High |
| Jun | 7 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Lyon 04 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 Lyon 04 is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 14 | 16 | 16 | 14 | 15 | 11 | 11 | 11 | 12 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 16 | Moderate |
| May | 14 | Moderate |
| Jun | 15 | Moderate |
| Jul | 11 | Good |
| Aug | 11 | Good |
| Sep | 11 | Good |
| Oct | 12 | Good |
| Nov | 12 | Good |
| Dec | 12 | Moderate |
Where is Lyon 04?
Lyon 04 sits at 45.8°N, 4.8°E, 259 m above sea level, in France. The nearest listed city is Lyon 01, 1.0 km away.
Topography around Lyon 04
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Lyon 04.
Within 3 km, the terrain around Lyon 04 has only modest variations in elevation — a maximum elevation change of 152 m around an average of 208 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 642 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,505 m.
The land around Lyon 04 is covered by artificial surfaces (58%) and trees (34%) within 3 km, trees (32%) and artificial surfaces (30%) within 16 km, and trees (41%) and grassland (35%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- 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 Lyon 04 (45.7751°, 4.8271°, elevation 259 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.