Bologna in Summer
In summer (June, July and August), Bologna sees average daytime highs around 30°C and overnight lows near 19°C, with 158 mm of rain over about 22 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 26°C in early June to 29°C by late August. The sky is clear or mostly clear about 56% of the time across summer, and the air most often feels humid.
Summer is Bologna's 3rd-best season to visit on our travel score. For the whole year in context, see Bologna's year-round climate.
- Avg daytime high
- 30°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 158 mm
- 22 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.6
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Bologna in Summer
Over the season highs climb from about 26°C in early June to 29°C by late August.
A typical summer day in Bologna reaches about 30°C and drops to 19°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Bologna
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.
Bologna 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 | 8° / 1° | 45 | 7.4 | 2 | 9 | 1.4 |
| Feb | 10° / 2° | 64 | 7.5 | 2.1 | 10.1 | 2.4 |
| Mar | 15° / 5° | 63 | 8.1 | 1 | 11.6 | 4.7 |
| Apr | 18° / 9° | 76 | 10.2 | 0.2 | 13.2 | 5.9 |
| May | 23° / 13° | 76 | 9.5 | 0 | 14.6 | 6.9 |
| Jun | 28° / 18° | 60 | 7.8 | 0 | 15.3 | 6.4 |
| Jul | 31° / 20° | 46 | 6.3 | 0 | 15 | 5.2 |
| Aug | 30° / 20° | 53 | 7.7 | 0 | 13.9 | 5.3 |
| Sep | 25° / 16° | 68 | 8 | 0 | 12.3 | 7.2 |
| Oct | 19° / 11° | 76 | 8.8 | 0 | 10.7 | 6.3 |
| Nov | 13° / 7° | 91 | 10 | 0.5 | 9.4 | 3.6 |
| Dec | 9° / 2° | 69 | 8.7 | 1.6 | 8.7 | 1.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 56% of the time across summer.
Chance of precipitation in Summer
Bologna gets around 158 mm of rain over 22 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 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 06 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 Bologna?
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 Bologna for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Bologna in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Bologna sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. About 22 days see rain.
UV index in Bologna 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 Bologna peaks around July 13 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 | 3 | 5 | 7 | 6 | 8 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Bologna 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 Bologna is worst in March — around 18 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Bologna's WHO annual average of 15 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 17 | 16 | 18 | 17 | 16 | 15 | 13 | 13 | 13 | 14 | 14 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 16 | Moderate |
| Mar | 18 | Moderate |
| Apr | 17 | Moderate |
| May | 16 | Moderate |
| Jun | 15 | Moderate |
| Jul | 13 | Moderate |
| Aug | 13 | Moderate |
| Sep | 13 | Moderate |
| Oct | 14 | Moderate |
| Nov | 14 | Moderate |
| Dec | 15 | Moderate |
Where is Bologna?
Bologna sits at 44.5°N, 11.3°E, 54 m above sea level, in Italy. The nearest listed city is Casalecchio di Reno, 5.0 km away.
Topography around Bologna
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bologna.
Within 3 km, the terrain around Bologna has significant variations in elevation — a maximum elevation change of 264 m around an average of 85 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 532 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,113 m.
The land around Bologna is covered by artificial surfaces (54%) and trees (38%) within 3 km, cropland (37%) and trees (30%) within 16 km, and cropland (39%) and trees (36%) within 80 km.
Italy travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 230 V · 50 Hz
- Prices
- ≈ 69% of US
- price level, 2025
- GDP per capita
- $43,309
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.6
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 513
- 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 Bologna (44.4938°, 11.3387°, elevation 54 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.