Is it raining now in San Lazzaro?
Moderate rain
9 SeptWill last more than 1 hour.
Last update: 14:00, 9 Sept 2026
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Rain in San Lazzaro: What You Need to Know
San Lazzaro di Savena rain radar covers a foothill-adjacent Bologna suburb where the Savena river descends from the Colli Bolognesi hills onto the plain immediately southeast of the city — comparable in position to Casalecchio di Reno on the Reno, but on the Savena. Annual precipitation in the 750-850mm range is typical for this Bologna-foothill fringe, a different regime from the flat plain further out.
West/southwest Atlantic fronts are the dominant storm driver, with the Savena valley channeling Apennine runoff toward Bologna's southeastern edge. Autumn (Oct-Nov) shows the clearest seasonal peak, and summer convective storms bring hail risk in the hills above town — conditions a citywide Bologna forecast will not distinguish from the suburb's own foothill exposure.
RainViewer maps precipitation over San Lazzaro di Savena from the Protezione Civile national radar network, refreshed every 5 minutes. When ARPAE Emilia-Romagna issues an alert for the Savena basin, hyperlocal radar shows whether a cloudburst is building in the Colli Bolognesi hills right now, before it reaches town.
Rain by Season in San Lazzaro
Autumn (Oct-Nov)
The clearest seasonal rain peak, driven by Atlantic fronts moving up the Savena valley.
Spring
A secondary rainfall peak as convective activity builds.
Summer
Convective storms bring hail risk in the hills above town, tied to the Colli Bolognesi's exposed terrain.
Wine-country calendar
The Colli Bolognesi DOC wine hills directly above San Lazzaro run their vendemmia (grape harvest) September-October, giving the town a distinct agricultural identity layered onto its Bologna-suburb role.
Why You Need a Rain Radar in San Lazzaro
Savena flash-flood exposure
San Lazzaro sits directly on the Savena's approach into Bologna, sharing the flash-flood exposure documented in Bologna's minor urban streams (most cited: the Aposa and Ravone) from Apennine-front cloudbursts.
Landslide watch in the Colli Bolognesi
Prolonged autumn rain raises landslide risk in the hills above town, a known Apennine-fringe hazard for hillside residents and vineyard workers.
A14 autostrada logistics
Proximity to the A14 Bologna-Taranto interchange makes San Lazzaro a logistics point exposed to flood and hail delays; live radar helps freight operators time movements.
Colli Bolognesi vendemmia
Grape growers in the DOC wine hills above town watch hail risk closely during the September-October harvest window.
Commuting into Bologna
Served by the Bologna metropolitan rail/bus network and the SS9 Via Emilia corridor, residents use hyperlocal radar to plan around rain before heading into the city.
RainViewer Radar Coverage in San Lazzaro
RainViewer draws radar data for Italy from the Dipartimento della Protezione Civile (Italian Civil Protection Department) national radar network, supplemented by regional radar systems from ARPA agencies including ARPA Veneto, ARPAE Emilia-Romagna, ARPA FVG, and ARPAL, updated every 5 minutes. Coverage spans the Italian mainland, Sicily, and Sardinia. Around San Lazzaro di Savena the map also covers Bologna, Casalecchio di Reno and the Colli Bolognesi hills.
San Lazzaro Rain Radar: Frequently Asked Questions
- Is it raining in San Lazzaro di Savena right now?
Check RainViewer's hyperlocal radar for a live view of rain over the town and the Colli Bolognesi hills above it, refreshed every 5 minutes from Protezione Civile and ARPAE data. This is more precise than a citywide Bologna forecast for this foothill fringe.
- Is a storm building in the Colli Bolognesi hills?
Summer convective storms often form over the hills above San Lazzaro before reaching the plain. Live radar shows a cell developing there ahead of time.
- Will rain flood the Savena near San Lazzaro?
The Savena shares Bologna's documented flash-flood exposure from Apennine-front cloudbursts. Checking radar during heavy rain events helps you judge how fast the river is rising.
- Is there landslide risk in San Lazzaro's hills?
Prolonged autumn rain raises landslide risk on the Colli Bolognesi slopes above town, a recognized Apennine-fringe hazard during sustained wet spells.
- When is the best time to visit San Lazzaro di Savena?
Spring and early autumn balance mild weather against the Oct-Nov rain peak; September-October adds the Colli Bolognesi vendemmia.
- Why does San Lazzaro get more rain variation than central Bologna?
Sitting where the Savena descends from the Colli Bolognesi hills, San Lazzaro catches Apennine-front rainfall that the flatter city center further north does not always see.
- How often does the radar update?
RainViewer refreshes from the Protezione Civile national network every 5 minutes, tracking rain as it moves down the Savena valley toward San Lazzaro.
- Can I get rain alerts for San Lazzaro di Savena?
Yes — set a rain alert for the town centre or the Colli Bolognesi hills to get notified before a cloudburst or hail cell arrives.
Track Rain in San Lazzaro in Real Time
The Colli Bolognesi vendemmia and the Savena's flash-flood history both make San Lazzaro di Savena a town where hill-fringe rain needs closer tracking than a citywide Bologna forecast gives.
RainViewer gives you a 2-hour forecast in 5-minute slices, rain alerts before a cloudburst reaches the Savena or the hills above town, direction arrows showing storms arriving from the W/SW, 48 hours of radar history to see how an Apennine-front system moved through, and tracking across multiple locations — San Lazzaro, Bologna, the Colli Bolognesi. A static forecast says storms are possible near Bologna; live hyperlocal radar shows the cell over San Lazzaro di Savena right now.
Track rain in San Lazzaro di Savena — free Upgrade to Essential for alerts, forecasts, and full radar history
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