Graz weather by month

The best time to visit Graz is May, June and September — 88/100 in September, 22°C and 9 rainy days. The best season is summer, June to August (84/100 on average).

The worst month is December at 52/100 — cold, a little rain, clean air. See December →

Updated September 2026 · climate normals from ERA5 reanalysis

Planning the wider trip? Best time to visit Austria →

Graz🇦🇹 Austria · Alps · City88
  1. 53Jan
  2. 64Feb
  3. 73Mar
  4. 81Apr
  5. 86May
  6. 87Jun
  7. 82Jul
  8. 84Aug
  9. 88Sep
  10. 77Oct
  11. 61Nov
  12. 52Dec

Best season: June to August (84/100 on average) · worst December (52/100)

Days
22°C
Nights
11°C
Wet days
9
Sun
8.8 h
Humidity
78%
Daylight
13 h
Graz, Austria
Photo: Lukas Kaufmann · Pexels

Graz, month by month

Comfort score out of 100 for the kind of trip Graz is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.

MonthScoreTierHighRainSunCrowdsOn
Jan53D5°C5 d6 hBusy—
Feb64C9°C6 d7 hBusy1
Mar73B13°C5 d9 hBusy2
Apr81A18°C7 d10 hPeak1
May86A21°C12 d10 hBusy—
Jun87A26°C12 d12 hBusy1
Jul82A28°C12 d12 hBusy1
Aug84A27°C10 d11 hBusy—
Sep88A22°C9 d9 hPeak2
Oct77B17°C5 d7 hBusy1
Nov61C10°C8 d5 hBusy1
Dec52D6°C6 d5 hPeak1

What's on in Graz through the year

Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.

February
  • Elevate Festival20 Feb – 15 Mar (usually)Festival
March
  • Easter4–6 AprHoliday
June
  • Styriarte20 Jun – 25 Jul (usually)Festival
September
  • Aufsteirern10–25 Sep (usually)Festival
  • steirischer herbst18 Sep – 20 Oct (usually)Festival
November
  • Graz Advent markets20 Nov – 26 Dec (usually)Festival

Everything on in Graz through the year →

Crowds in Graz in September

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 crowdsAufsteirern, Summer holidays in Austria, school holidays in 3 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Good to know before you go to Graz

Real experiences from travellers' own write-ups, quoted with a link to the original.

Visas & entry

A practical guide to Graz notes it's an easy train trip from elsewhere in Austria, about 2 hours from Vienna and 3 from Linz, and once there the compact "human scale" city center is easily covered on foot or by streetcar without needing a car. Their advice was to give the city at least one full day rather than a rushed half-day stop, and to time a visit for spring or autumn for the mildest weather, or winter specifically for the Christmas market atmosphere if that's the draw.
A Wanderlust for Life · Read the original ↗

Traveller notes on Graz

What people who have been say about the place — the year-round notes first, then month by month.

Forum posters describe June as capable of easily reaching 30C on a sunny day, with the honest caveat that the weather is genuinely variable rather than settled - it rarely rains all day, but warm afternoons can give way to an hour or two of torrential evening thunderstorms, especially anywhere near higher ground. The consistent advice is to always carry a waterproof jacket and dress in layers - t-shirts under a jumper - so you can adjust through the day. Overall verdict from posters who've made a June trip: good conditions for sightseeing, just don't expect a guaranteed run of dry days.
Tripadvisor community · June · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Austrian December temperatures generally ranging between -10C and 10C, with more extreme readings possible but less likely. Posters discussing snow specifically note that while heavy snowfall can happen, the odds of a truly severe snowstorm are fairly low, especially mid-December, and major road closures along well-traveled routes remain rare even when conditions turn wet or snowy. Posters generally describe December as the least snow-reliable month of a typical winter travel window, even though it's often the busiest with holiday markets and events. Posters generally recommend layered winter clothing and treating any snow forecast as a possibility rather than a certainty for a December visit to Graz.
Tripadvisor community · December · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Graz's card on the map.