Florence (Firenze) weather in August

August in Florence: sweltering, a little rain, with clean air — fine if you can take 37°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Florence🇮🇹 Italy · Central & Southern Italy · City75
  1. 64Jan
  2. 68Feb
  3. 77Mar
  4. 88Apr
  5. 91May
  6. 85Jun
  7. 79Jul
  8. 75Aug
  9. 84Sep
  10. 83Oct
  11. 67Nov
  12. 61Dec

#8 of 12 months in Florence · #812 of 1413 destinations to visit in August · comfort 75/100 (tier B)

Days
35°C
Nights
19°C
Wet days
6
Sun
12.2 h
Humidity
63%
Daylight
14 h
Florence, Italy
Photo: Claudia Solano · Pexels

Traveller notes on Florence in August

Notes from nearby Siena (52 km away)

Florence doesn't have its own notes for August yet — these are about Siena, close enough to share the season.

Regulars are specific the Piazza del Campo turns wall-to-wall on the August 16th Palio race day itself, gates closing around 4pm ahead of a 5pm parade, though the day before is described as genuinely wonderful, Contradas marching the streets in full ceremonial dress without the crush. Our row backs that hot, genuinely dry read, 30.4C reading as a hot 31C, over 18.9C nights, with 45.2mm of rain across 7.1 days and humidity down to 61 percent. Regulars are consistent this counts as genuinely hot by day, accommodation with pool access or easy water nearby the standard recommendation for cooling off between sightseeing. This remains a real trade-off month, heat and Palio crowds against a once-a-year spectacle. The record: 12.3 hours of sun, a 12.7 kph wind and AQI 47.
PalioCrowdsPeakButDayBeforeIsWonderful · August · 1 month ago · about Siena · Read more on Tripadvisor ↗

Other months in Florence

Regulars split this month cleanly - the first half genuinely mellow, warm days with next to no chance of real heat, while the heaviest rain typically doesn't arrive until mid-to-late October or even the first days of November. Our row backs the wetter second-half reality, 22.8C over 11.3C nights, with 109.7mm of rain across 10.2 days. Regulars are consistent the standard packing list follows the split directly: layers, a decent coat and waterproof shoes for the wetter stretch, a thin sweater for cooling evenings even on a dry day. This remains a genuinely popular month despite the rain risk, with reservations for the Uffizi and Accademia recommended well ahead. The record: humidity 80 percent, 8.1 hours of sun, an 11.8 kph wind and AQI 42.
FirstHalfPleasantSecondHalfBringsTheRain · October · 1 month ago · Read more on Tripadvisor ↗
Regulars split the month cleanly: the first week or two can still push into the upper 80s to lower 90s Fahrenheit and carry the risk of a short, sharp late-summer storm, while the back half is called more reliable and comfortable overall. Our row backs the average across that swing, 28.5C reading as 29C over 15.3C nights, with 94mm of rain across 9 days. Regulars specifically flag the hills surrounding the city as a source of fast-forming storms that can arrive with little warning even on an otherwise clear day, rarely lasting more than a day when they do. The standard packing advice is a light wind-breaker and a small umbrella rather than full rain gear. The record: humidity 72 percent, 10.1 hours of sun, an 11.9 kph wind and AQI 44.
HotFirstHalfMoreReliableSecond · September · 1 month ago · Read more on Tripadvisor ↗
Easter opens the season here and regulars say the centre is fuller in Easter week than in late summer, with Italian visitors arriving for the Scoppio del Carro on Easter Sunday on top of everyone else. The filling starts the week before; two weeks after, they report a noticeably quieter city. Since Easter moves, the date has to be looked up before booking. April's weather is warmer than March and wetter than people expect - our row carries 74.8mm across 10.3 days under 20.9C days and 7.8C nights that feel like 6C, so it can be genuinely cool as well as showery. The record: humidity 73 percent, 10.5 hours of sun and AQI 43.
TwoWeeksAfterEasterIsADifferentCity · April · 1 month ago · Read more on Tripadvisor ↗
Florence-forum threads comparing May to June crowds agree on the shape even if the exact numbers vary: May is already high season, with the Uffizi, the Accademia and the Duomo drawing large crowds by any measure, and early May is only marginally quieter than June rather than genuinely calm. The workaround regulars share is timing, not the calendar - stay overnight and the city empties out noticeably once the day-trippers leave, with evenings called properly lovely. Weather cooperates for the sightseeing: warm and mostly sunny with occasional showers, a light jacket or umbrella worth carrying rather than needing. The record: 24.4C days feeling like 25C, 12.1C nights, 91mm of rain across nearly twelve days and 11.4 hours of sun - Florence in May is beautiful and busy in equal measure.
OltrarnoEveningRegular · May · 1 month ago · Read more on Tripadvisor ↗

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Florence climate normals — August

Daytime high35°C / 94°F🔥 sweltering
Nighttime low19°C / 66°F
Feels like (high)37°C / 99°F
Rainfall37 mm / 1.4 in🌦 some rain
Rainy days6 days
Humidity63%💧 humid
Dew point16°C / 60°F
Sunshine12.2 h/day
Daylight13.9 h
Wind12 km/h / 8 mph
Air quality (US AQI)50🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Florence in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsFerragosto, Summer holidays in Italy, school holidays in 6 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Florence's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherFlorence's weather peaks April–June, best around May.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Florence in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Rule

    Booked slots at the big museums

    1 Jan – 31 DecBook early

    The Uffizi and the Accademia sell timed entry and turning up without one costs hours between March and October. The city also charges a nightly tourist tax on every bed. Source ↗

  • Hazard

    Basin heat

    1 Jul – 25 AugExtreme heat

    The city sits in a bowl in the Arno valley with no breeze and stone that holds the day's heat overnight. Queues in the open, which is most of them, are the real problem. Source ↗

  • Holiday

    Ferragosto

    5–25 AugSchool holidaysClosuresCrowded

    Florentines leave and their trattorias close for a fortnight, while the coach tours carry on regardless. The queues stay; the reason to eat here does not. Source ↗

What's on around the world in August →

Nearby, and something's on

Within 300 km of Florence — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Florence?

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Florence in August — FAQ

Is August a good time to visit Florence?
August in Florence: sweltering, a little rain, with clean air — fine if you can take 37°C afternoons. It ranks #8 of 12 months for Florence on SeasonMap's comfort score (75/100).
What is the weather like in Florence in August?
In August, Florence averages a daily high of 34.5°C and a low of 19°C, with about 36.5 mm of rain over roughly 5.5 rainy days.
What is the air quality in Florence in August?
Florence has a mean US Air Quality Index of about 50 in August.

Within 300 km: Siena's Palio of 16 August on 13–16 Aug, and Bologna's Bologna Estate on 1 Jun – 15 Sep.