Best time to visit Graz
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Graz
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Graz).
- 1
Graz Schlossberg and Old Town - Audio Guide and Self Guided Tour - 2
Graz Private Walking Tour With A Professional Guide - 3
Historic Graz: Exclusive Private Tour with a Local - 4
Graz: Schlossberg Private Guided Tour - 5
Graz Jewish Quarter and Old Town Private Tour - 6
Explore Graz in 60 minutes with a Local
Last refreshed 2026-06-26.
Similar climatesKlagenfurt96% · Maribor95% · Vienna93%
Other destinations with the most-alike year-round climate to Graz (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Graz's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | -3–5 | 2 | 6 | 89 | 14.8 | 67% | 11 | 130 | 1 | Quiet | 5 |
| Feb | -1–9 | 6 | 5 | 60 | 12.0 | 58% | 13 | 162 | 1 | Quiet | 6 |
| Mar | 1–11 | 8 | 6 | 70 | 11.7 | 51% | 14 | 202 | 3 | Quiet | 7 |
| Apr | 4–15 | 12 | 9 | 113 | 12.6 | 51% | 14 | 217 | 4 | Quiet | 7 |
| May | 9–19 | 17 | 15 | 186 | 12.4 | 58% | 14 | 225 | 4 | Quiet | 7 |
| Jun | 14–24 | 24 | 15 | 137 | 9.1 | 57% | 13 | 266 | 6 | Quiet | 8 |
| Jul | 16–26 | 27 | 14 | 124 | 8.9 | 55% | 13 | 283 | 6 | Quiet | 8 |
| Aug | 16–26 | 27 | 14 | 127 | 9.1 | 59% | 11 | 259 | 6 | Peak | 8 |
| Sep | 11–21 | 21 | 12 | 126 | 10.5 | 61% | 12 | 212 | 4 | Busy | 8 |
| Oct | 7–16 | 15 | 8 | 89 | 11.1 | 68% | 11 | 174 | 2 | Moderate | 7 |
| Nov | 1–9 | 6 | 7 | 75 | 10.7 | 74% | 10 | 129 | 1 | Peak | 5 |
| Dec | -2–5 | 2 | 8 | 115 | 14.4 | 76% | 9 | 107 | 1 | Busy | 4 |
UV Index in Graz by Month
UV index in Graz peaks at 6 (high) in July, dropping to 1 (low) in December. July have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
July
8/1016–26°C · 14 rain days (124h) · 283 sun hours · 55% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (high)
September
8/1011–21°C · 12 rain days (126h) · 212 sun hours · 61% humidity · Busy crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)
August
8/1016–26°C (feels 27°C) · 14 rain days (127h) · 259 sun hours · 59% humidity · Peak crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)
Every month
Show the other 9 months in detail
January
5/10-3–5°C (feels 2°C) · 6 rain days (89h) · 130 sun hours · 67% humidity · Quiet crowd · UV 1 (low)
February
6/10-1–9°C (feels 6°C) · 5 rain days (60h) · 162 sun hours · 58% humidity · Quiet crowd · UV 1 (low)
March
7/101–11°C (feels 8°C) · 6 rain days (70h) · 202 sun hours · 51% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
April
7/104–15°C (feels 12°C) · 9 rain days (113h) · 217 sun hours · 51% humidity · Quiet crowd · UV 4 (moderate)
May
7/109–19°C (feels 17°C) · 15 rain days (186h) · 225 sun hours · 58% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (high)
June
8/1014–24°C · 15 rain days (137h) · 266 sun hours · 57% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)
October
7/107–16°C (feels 15°C) · 8 rain days (89h) · 174 sun hours · 68% humidity · Moderate crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
November
5/101–9°C (feels 6°C) · 7 rain days (75h) · 129 sun hours · 74% humidity · Peak crowd · UV 1 (low)
December
4/10-2–5°C (feels 2°C) · 8 rain days (115h) · 107 sun hours · 76% humidity · Busy crowd · UV 1 (low)
Frequently asked questions about visiting Graz
When is the best time to visit Graz?
July is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 16–26°C (14 rainy days). The top three months by score are July, September, August.
What is the worst time to visit Graz?
December is the lowest-scoring month (4/10). Typical conditions: -2–5°C (8 rainy days).
When are crowds lowest in Graz?
Search-interest seasonality (Google Trends 2021-2025) is lowest in February and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Graz have good weather but fewer tourists?
June (climate 8/10, crowd index 15) and July (climate 8/10, crowd index 10) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Graz by month?
UV peaks at 6 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 1, Mar 3, Apr 4, May 4, Jun 6, Jul 6, Aug 6, Sep 4, Oct 2, Nov 1, Dec 1.
What is the UV index in Graz in July?
July is the peak UV month in Graz, with a daily-peak UV index of 6 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in Graz on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 6 (moderate), but the top 10% of days reach UV 8 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, May, June, July, August, September, October. Plan sun protection for the worst case, not the average.
Is air quality in Graz bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 7 months: January, February, March, April, October, November, December. The worst month is December with a typical-day mean of 25 µg/m³ (unhealthy); on the worst 10% of days PM2.5 reaches 41 µg/m³ (hazardous) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.