Climate guide for Asciano, Italy

Best Time to Visit
Asciano

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01 · Italy

About Asciano

Asciano sits among the bare clay ridges of the Crete Senesi, a short drive south of Siena, with a medieval centre and a small archaeology museum. The abbey of Monte Oliveto Maggiore, known for its frescoes and cypress-lined approach, lies a few kilometres away in the hills. Rapolano Terme and its warm springs are close, and Siena is an easy day out. Spring and autumn are the most comfortable seasons, and summer here is dry and hot.

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Did you know?

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Travel Tips

01Best time & timing
Target June, May, April — that is where comfort scores peak (9.4/10). January is the weakest month at 5.2/10.
02Weather & what to pack
June averages 23°C with 33 mm of rain and about 30 days with 6+ hours of sunshine. Pack light clothing, a hat and real sun protection.
03Crowds & value
If budget matters, target May — 9.1/10 with lighter demand than June.

Things to do in Asciano

Asciano, Italy. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Asciano: the short answer

Plan Asciano for June, with May, April close behind — the stretch with the most usable temperatures and the fewest lost days to rain: June averages 23°C with 33 mm of rain and about 30 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are January, December. If budget matters more than perfect weather, February is the strongest of the low-rate months at 6.2/10.

Across the year Asciano swings from 6°C in January to 28°C in July, a 22-degree spread, while rainfall ranges from 15 mm in July to 70 mm in September. In short, Asciano is not equally good year-round — the gap between its best and worst month is 4.2 points on the same 10-point scale.

Warmest month: July (28°C). Coolest: January (6°C). Driest: July (15 mm). Wettest: September (70 mm).

Asciano month by month

January in Asciano — workable with trade-offs

Trade-offs · 5.2/10

Expect 6°C (42°F) in January. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 50 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 9.1 hours of daylight to work around it.

That is 5.2/10 on the same scale — 12th of 12 months, versus 9.4/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Asciano — 4.2 points higher on the same scale.

February in Asciano: mixed conditions, plan around the weather

Trade-offs · 6.2/10

Expect 7°C (45°F) in February. A good month for city streets, viewpoints and long meals; leave swimming for another season.

With around 36 mm of rain, any showers tend to pass through rather than settle in; about 2 days with 6+ hours of sunshine and 10.2 hours of daylight fill the rest.

That is 6.2/10 on the same scale — 9th of 12 months, versus 9.4/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.

If your dates are flexible, June is materially better in Asciano — 3.2 points higher on the same scale.

March in Asciano — reliably good (8th best month)

Good · 7.1/10

March averages 9°C (48°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 49 mm, so plan one flexible day in three; you still get about 10 days with 6+ hours of sunshine and 11.6 hours of daylight.

It scores 7.1/10 here, 8th of 12 months, against 9.4/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? June scores 2.3 points higher here — enough to change the trip.

April is one of the strongest months in Asciano (3rd)

Best window · 9/10

Temperatures hover around 12°C (54°F) — the kind of month where neither heat nor cold forces the schedule.

With around 36 mm of rain, any showers tend to pass through rather than settle in; about 20 days with 6+ hours of sunshine and 13.2 hours of daylight fill the rest.

On our climate-comfort scale this is one of the strongest months of the year for Asciano at 9/10 (3rd of 12), just behind June at 9.4/10.

Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening.

May in Asciano — one of the year's strongest windows (2nd)

Best window · 9.1/10

May averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

Rainfall runs 63 mm, so plan one flexible day in three; you still get about 26 days with 6+ hours of sunshine and 14.5 hours of daylight.

A 9.1/10 puts this among the year's best months in Asciano (2nd of 12); only June scores higher, at 9.4/10.

Figure on mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

June in Asciano — the year's strongest window

Best window · 9.4/10

At 23°C (74°F) this is comfortable city weather in June, with sightseeing easiest before lunch and after the afternoon peak.

With around 33 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 15.2 hours of daylight fill the rest.

On our climate-comfort scale this is the top-ranked month of the year for Asciano at 9.4/10 — the reference point every other month on this page is measured against.

Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection.

July holds up well in Asciano — 7th best month

Good · 7.4/10

Days in July average 28°C (82°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

With around 15 mm of rain, any showers tend to pass through rather than settle in; about 31 days with 6+ hours of sunshine and 14.9 hours of daylight fill the rest.

That is 7.4/10 on the same scale — 7th of 12 months, versus 9.4/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

If your dates are flexible, June is materially better in Asciano — 2 points higher on the same scale.

August in Asciano: strong conditions, 6th of 12

Good · 7.5/10

August averages 27°C (80°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 45 mm of rain — occasional showers rather than washed-out days — alongside about 27 days with 6+ hours of sunshine and 13.8 daylight hours.

It scores 7.5/10 here, 6th of 12 months, against 9.4/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

Flexible dates? June scores 1.9 points higher here — enough to change the trip.

September in Asciano — reliably good (4th best month)

Good · 8.4/10

September averages 21°C (69°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Rainfall runs 70 mm, so plan one flexible day in three; you still get about 15 days with 6+ hours of sunshine and 12.3 hours of daylight.

It scores 8.4/10 here, 4th of 12 months, against 9.4/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack light clothing, a hat and real sun protection, a packable rain layer.

October in Asciano: strong conditions, 5th of 12

Good · 7.7/10

Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 51 mm of rain this month — a flexible day or two helps — with about 5 days with 6+ hours of sunshine and 10.8 hours of daylight to work around it.

That is 7.7/10 on the same scale — 5th of 12 months, versus 9.4/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

If your dates are flexible, June is materially better in Asciano — 1.7 points higher on the same scale.

November in Asciano — workable with trade-offs

Trade-offs · 5.9/10

Expect 11°C (51°F) in November. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 67 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 9.5 hours of daylight to work around it.

That is 5.9/10 on the same scale — 10th of 12 months, versus 9.4/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Asciano — 3.5 points higher on the same scale.

December in Asciano — middling scores, decent value

Trade-offs · 5.3/10

December averages 8°C (46°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 56 mm, so plan one flexible day in three; you still get almost no days with 6+ hours of sunshine and 8.8 hours of daylight.

It scores 5.3/10 here, 11th of 12 months, against 9.4/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? June scores 4.1 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Asciano, Italy?
In Ideal Weather mode, the best months to visit Asciano are June, May, April, September. June is the single peak month with an Ideal Weather score of 9.4/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Asciano year-round?
Asciano has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 6°C in January to 28°C in July, with Ideal Weather scores between 5.2 and 9.4 out of 10.
Which months should I avoid in Asciano?
The lowest Ideal Weather-scoring months in Asciano are January (5.2/10), December (5.3/10), November (5.9/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Asciano?
September is the wettest month in Asciano, averaging about 70 mm of rainfall. July is the driest, at roughly 15 mm.
Which is the sunniest month in Asciano?
July sees the most sun in Asciano, with about 31 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Asciano a good destination for sightseeing and cultural travel?
Asciano is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (June, May, April, September) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Asciano calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Asciano: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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