Bologna Weather

A month-by-month look at temperature, rainfall and what to pack in Bologna. The annual average is 19°C high / 9°C low — hottest in July (31°C) and coldest in January (0°C).

Annual avg
19° / 9°
Hottest month
July 31°
Coldest month
January 0°
Wettest month
October 80mm

Bologna Weather at a Glance

As of 2026

A quick summary of Bologna's year-round climate and the best time to visit.

Annual average
19° / 9°
Best time to visit
April, September, May
Hottest month
July (31°C)
Coldest month
January (0°C)
Wettest month
October (80mm)
Driest month
July (40mm)

As of 2026, Bologna's weather averages 19°C high / 9°C low across the year, and the best time to visit for stable temperatures, rainfall and crowds is April, September, May. The hottest month is July (31°C), the coldest is January (0°C), and the wettest is October (80mm).

Best Time to Visit Bologna

April Top pick
Avg 18° / 8° · 65mm rain

April is one of the best months to visit Bologna — spring is in full swing with comfortable temperatures and longer, brighter days. It averages 18°C/8°C, ideal for walking. The city is at its liveliest, with terrace dining, aperitivo crowds, and the university in full term. It's a perfect time for the San Luca portico climb and unhurried days under the colonnades, plus easy day trips to Modena, Parma, and Ferrara. This is high season, so book ahead — and watch the trade-fair calendar at the Fiere, as big shows can push hotel prices up sharply and tighten availability city-wide. Easter and Pasquetta (the date moves each year) bring a festive feel but some closures and busier sights; Liberation Day (Apr 25) is a public holiday that can extend into a long weekend. Some spring showers pass through, but they're easy to dodge under the porticoes. Pack a light layer for cooler evenings. Overall a top-tier window — just reserve hotels and popular trattorias early.

September Great
Avg 27° / 15° · 70mm rain

September is one of the very best months to visit Bologna — the summer heat eases, the city revives, and the food scene is back in full force. It averages 27°C/15°C, warm and comfortable. With trattorias reopened after the August break and the university term restarting, Bologna feels alive and energetic again, while temperatures are perfect for portico walks, the San Luca climb, and terrace aperitivo. It's high season, so book ahead, and keep an eye on the Fiere trade-fair calendar, which can spike hotel prices. But the weather-and-food combination is hard to beat. Early September can still bring a few hot, humid days; later in the month it cools pleasantly with the first hints of autumn. The grape harvest season also flavors the regional menus and wine. Rainfall ticks up a little from the dry summer, but the porticoes keep you covered. Overall a top-tier window alongside May and October — ideal for a food-and-walking trip with the city back to its full self.

May Great
Avg 23° / 12° · 60mm rain

May is a superb month in Bologna — warm, sunny, and lively, with long days and the city in full term. It averages 23°C/12°C, about as comfortable as it gets before the summer heat. This is prime time for outdoor life: portico walks, the San Luca climb, terrace aperitivo, and easy day trips to Modena, Parma, Ferrara, and Florence. The university energy and events calendar are at their peak. It's high season, so hotels and popular trattorias should be booked ahead, and the trade-fair calendar at the Fiere can again push prices up — check dates before committing. Labour Day (May 1) is a public holiday that can make a long weekend. Otherwise the weather is reliable, with only occasional showers easily dodged under the porticoes. Late May edges toward summer warmth and humidity, but it's still very pleasant. Overall one of the two best windows of the year (with September-October) — book early to lock in good rates.

Bologna Weather Month by Month

Tap any month for a detailed guide with what to wear, sunrise/sunset and air quality.

Month High/Low Rain Rainy days Crowds
January 6° / 0° 45mm 7 Quiet Details →
February 9° / 1° 45mm 7 Quiet Details →
March 14° / 4° 55mm 8 Moderate Details →
April 18° / 8° 65mm 9 Busy Details →
May 23° / 12° 60mm 9 Busy Details →
June 27° / 16° 55mm 8 Busy Details →
July 31° / 19° 40mm 5 Moderate Details →
August 31° / 18° 50mm 6 Quiet Details →
September 27° / 15° 70mm 8 Busy Details →
October 20° / 11° 80mm 9 Busy Details →
November 13° / 6° 80mm 10 Moderate Details →
December 7° / 1° 55mm 8 Moderate Details →

What to Wear in Bologna by Season

Spring (Mar–May) 18° / 8°

Spring at its best — around 18°C/8°C. Long sleeves or a light shirt with a cardigan or light jacket for cooler evenings. UV climbing — sunglasses for sunny days.

Summer (Jun–Aug) 30° / 18°

Hot, humid peak summer — around 31°C/19°C. Light, breathable clothing, a hat, sunglasses, and a handheld fan. UV 9 — SPF 50 sunscreen and plenty of water.

Autumn (Sep–Nov) 20° / 11°

Mild, comfortable autumn — around 20°C/11°C. Long sleeves, knitwear, and a light jacket; a layer for cooler, occasionally wet evenings. UV 4.

Winter (Dec–Feb) 7° / 1°

Late winter — around 9°C/1°C, still cold and sometimes foggy but slightly milder than January. A warm coat, scarf, and gloves; layers for the day-night swing.

Bologna Weather FAQ

What is the best time to visit Bologna? +

For weather, April, September, May are the most comfortable months. Highs sit around 18°C with relatively stable rainfall and crowds.

What are the hottest and coldest months in Bologna? +

The hottest month is July with an average high of 31°C, and the coldest is January with an average low of 0°C. The annual average is 19°C high / 9°C low.

When does it rain most in Bologna? +

The wettest month is October (80mm over about 9 rainy days) and the driest is July (40mm). Total annual rainfall is roughly 700mm.

What should I pack for Bologna? +

Spring (Mar–May) averages 18/8°C — Spring at its best — around 18°C/8°C. Long sleeves or a light shirt with a cardigan or light jacket for cooler evenings. UV climbing — sunglasses for sunny days. Summer (Jun–Aug) averages 30/18°C — Hot, humid peak summer — around 31°C/19°C. Light, breathable clothing, a hat, sunglasses, and a handheld fan. UV 9 — SPF 50 sunscreen and plenty of water. Autumn (Sep–Nov) averages 20/11°C — Mild, comfortable autumn — around 20°C/11°C. Long sleeves, knitwear, and a light jacket; a layer for cooler, occasionally wet evenings. UV 4. Winter (Dec–Feb) averages 7/1°C — Late winter — around 9°C/1°C, still cold and sometimes foggy but slightly milder than January. A warm coat, scarf, and gloves; layers for the day-night swing.

What is the weather in Bologna this month (June)? +

June averages 27°C high / 16°C low with 55mm rainfall over about 8 rainy days. Crowds are busy and prices are high.

Keep Planning Your Bologna Trip

Why you can trust weather guide

Jimmy Kong TripPick founder · Travel content creator

Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.

8+ years analyzing travel data 30+ countries visited Live exchange rate verified
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