Is it raining now in Colle di Val d'Elsa?
Sunny
9 SeptNo upcoming precipitation for the next hour.
Last update: 14:00, 9 Sept 2026
Free to download * Essential from $0.83 * Prices vary by region and promotions.
- App Only
Track up to 20 locations
Home, office, kids' school - all at once, no switching tabs.
- App Only
Alerts for each of them
Get notified 15 minutes before rain - while you can still change your plans.
- App Only
Widgets on your home screen
Live radar without opening the app - on your lock screen or home screen.
Rain in Colle di Val d'Elsa: What You Need to Know
Colle di Val d'Elsa rain radar tracks a town sheltered enough by the surrounding hills that hyperlocal radar is what reveals the real difference between the industrial valley floor and the historic hilltop above it. Colle sits in the Elsa river valley between Siena and San Gimignano, seeing roughly 750-800mm of rain a year, similar to nearby Siena, wettest in October-November, driest in July.
The mechanism is shelter: W/SW Atlantic and Genoa Low fronts get moderated by the surrounding Chianti and Val d'Elsa hills before reaching the valley floor, softening what actually falls on Colle compared with more exposed inland Tuscan towns. The Elsa river and its tributaries drain the valley toward the Arno near Empoli, and the lower Elsa valley floor around Colle's industrial zone runs more flood-prone than the historic hilltop old town, Colle Alta — a detail no Siena-area forecast would separate out.
RainViewer shows what Protezione Civile alerts for the Elsa catchment describe only broadly — exactly where a cell is sitting relative to the crystal-glass factories on the valley floor versus Colle Alta above. A live hyperlocal radar shows sustained rain building over the catchment before a general alert would.
Rain by Season in Colle di Val d'Elsa
Autumn (Oct-Nov)
the wettest stretch, moderated by the surrounding hills compared with more exposed Tuscan towns.
Summer (Jul-Aug)
the driest months.
Spring
a secondary rainfall rise; winter runs cool and comparatively dry, typical of inland Tuscan hill country.
Seasonal weather pattern
The crystal-glass trade fairs and the surrounding Chianti/Val d'Elsa grape harvest (vendemmia) mark September-October as the town's defining seasonal window, tying its industrial and agricultural calendars together.
Why You Need a Rain Radar in Colle di Val d'Elsa
Crystal-glass factory operations.
Colle di Val d'Elsa is Italy's premier crystal and glassmaking centre, "Città del Cristallo," and factories and outlet shops concentrated in the lower town track radar around flood-prone valley-floor conditions.
Vendemmia in the Chianti/Val d'Elsa hills.
Surrounding vineyards and olive groves depend on radar to time the September-October harvest against approaching autumn fronts.
Siena-Firenze superstrada travel.
The raccordo passing near the town links Colle to both Siena and Florence, and hail on the route's hillside stretches is a recognized risk to vineyards alongside it.
Colle Alta heritage tourism.
The medieval upper town draws heritage visitors who check radar separately from the industrial lower town, since the hilltop position runs drier than the valley floor below.
Landslide watch on steeper valley slopes.
Prolonged autumn rain raises landslide risk on the steeper terrain around the Elsa valley, a concern for both agriculture and infrastructure.
RainViewer Radar Coverage in Colle di Val d'Elsa
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, including Siena and San Gimignano on either side of the Elsa valley.
Colle di Val d'Elsa Rain Radar: Frequently Asked Questions
- Is it raining in Colle di Val d'Elsa right now?
RainViewer's hyperlocal radar shows live conditions over the Elsa valley, updated every 5 minutes from the Protezione Civile's regional network. It separates the flood-prone valley floor from the drier hilltop old town, Colle Alta.
- Is it a good day to visit Colle Alta or the crystal outlet shops?
Check radar before heading out — Colle Alta's hilltop position tends to run drier than the industrial lower town, even on the same rainy day.
- Will rain affect travel on the Siena-Firenze superstrada?
Hail and heavy rain on the raccordo's hillside stretches can slow travel, and live radar shows a cell approaching the route before it reaches the road.
- Does Colle di Val d'Elsa flood?
The lower Elsa valley floor around the town's industrial zone is more flood-prone than the historic hilltop old town, and landslide risk rises on steeper slopes after prolonged autumn rain.
- When is the best time to visit Colle di Val d'Elsa?
Late spring through summer gives the driest weather for exploring Colle Alta, while the September-October vendemmia draws visitors into the shoulder-season rain risk.
- Why does Colle di Val d'Elsa get less rain than more exposed Tuscan towns?
The surrounding Chianti and Val d'Elsa hills moderate incoming W/SW fronts before they reach the valley floor, sheltering Colle compared with towns more directly exposed to Atlantic and Genoa Low systems.
- How often does the radar update?
RainViewer refreshes every 5 minutes using the Protezione Civile's regional network, tracking rain as it moves through the Elsa catchment.
- Can I get rain alerts for Colle di Val d'Elsa?
Yes — set an alert for Colle Alta or the industrial lower town and RainViewer notifies you before a system arrives, based on the same 5-minute hyperlocal radar feed.
Track Rain in Colle di Val d'Elsa in Real Time
Crystal-glass factory workers on the valley floor and vendemmia growers in the surrounding hills both need to know what's building over the Elsa catchment, and a general Siena-area forecast cannot show them that.
RainViewer gives Colle di Val d'Elsa a 2-hour forecast in 5-minute slices, rain alerts before you head to Colle Alta or the vineyards, direction arrows showing systems arriving from the W/SW off the Chianti hills, 48 hours of radar history, and tracking across multiple locations — Colle Alta, the industrial lower town, and the surrounding vineyards at once. A static forecast covers the whole valley with one number; live hyperlocal radar shows the Elsa catchment filling in real time.
Track rain in Colle di Val d'Elsa — free Upgrade to Essential for alerts, forecasts, and full radar history
RainViewer
