Best time to visit Zagreb

Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

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.

Saved to this browser. Changes update the strips below.
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Day · avg daily high (?)
Night · avg overnight low (?)
UV index · On a typical day around midday, UV is about this (?)
123456764211
On the sunniest 1 in 10 days, UV reaches this — and even higher
4668864
PM2.5 air quality · on a typical day (?)
31322213101081111172235
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
534937191614121717283663
June 9/10 feels 27°C (+1°C vs 1991-2020) · HCI 88/100
Day 26° · Night 16° · cools 10° at night 55% humidity 13 km/h wind 9 rain days (96h) 278h sun
Thermal 9
Sky 9
Rain 8
Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

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 Zagreb

15 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Zagreb).

  1. 1Baroque Varaždin and Trakošćan Castle Private Tour from Zagreb5.00★ (53)9hfrom $209🔥 Selling fast
  2. 2Transfer from Zagreb to Split with Entry Ticket to Plitvice Lakes4.84★ (51)12hfrom $201🔥 Selling fast
  3. 3Guided transfer from Zagreb to Split with Plitvice Lakes stop4.91★ (438)12hfrom $165🔥 Selling fast
  4. 4Private Wine Tour from Zagreb: Two Local Wineries & Samobor5.00★ (18)from $256
  5. 5Private Walking Tour of Zagreb with Funicular Tickets5.00★ (3)2h 30mfrom $95
  6. 6Plitvice and Rastoke day trip from Zagreb w/ticket (guar. dep.)4.91★ (850)10hfrom $83
  7. 7From Zagreb: Ljubljana and Lake Bled Guided Day Tour4.82★ (709)10h 30mfrom $105
  8. 8Plitvice Lakes with Ticket & Rastoke Guided Tour from Zagreb4.92★ (999)10hfrom $113
  9. 9Communism & Croatian Homeland War Tour4.97★ (1,399)2hfrom $46
  10. 10Zagreb Highlights: Old Town, WWII tunnels, Funicular & Tastings4.97★ (1,034)2hfrom $24
  11. 11Plitvice Lakes Guided Day Tour from Zagreb4.93★ (505)11hfrom $58
  12. 12Zagreb: Plitvice Lakes and Rastoke Watermill Village Day Tour5.00★ (2)10hfrom $38
  13. 13Zagreb to Ljubljana & Lake Bled Guided SMALL Group Tour (max 8)4.87★ (164)11hfrom $99
  14. 14Zagreb: Lake Bled & Ljubljana Day Tour with Chocolate4.92★ (12)11hfrom $84
  15. 15Plitvice Lakes Private Tour from Zagreb - Flexible Schedule4.97★ (29)from $731

Last refreshed 2026-05-30.

Similar climatesLyon95% · Budapest94% · Venice92%

Other destinations with the most-alike year-round climate to Zagreb (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 Zagreb'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 -1–6 3 10 115 11.5 76% 12 131 1 Quiet 5
Feb 1–11 8 5 66 13.2 65% 14 162 2 Quiet 6
Mar 2–13 10 8 91 11.4 56% 15 208 3 Quiet 7
Apr 5–16 14 8 110 13.8 54% 15 224 4 Quiet 7
May 11–21 20 15 156 10.4 59% 14 241 5 Quiet 7
Jun 16–26 27 9 96 10.7 55% 13 278 6 Quiet 9
Jul 18–28 29 8 80 10.0 52% 12 297 7 Quiet 8
Aug 18–28 29 10 95 9.5 56% 12 272 6 Peak 8
Sep 13–23 23 9 101 11.2 60% 12 219 4 Busy 9
Oct 9–17 17 9 99 11.0 72% 12 180 2 Moderate 7
Nov 3–10 8 9 104 11.6 80% 11 113 1 Peak 5
Dec 1–6 4 12 130 10.8 83% 11 102 1 Moderate 4

UV Index in Zagreb by Month

UV index in Zagreb peaks at 7 (high) in July, dropping to 1 (low) in December. June, July, August have high UV — SPF 30+ and sunglasses recommended.

Best months in detail

June

9/10

16–26°C · 9 rain days (96h) · 278 sun hours · 55% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (high)

September

9/10

13–23°C · 9 rain days (101h) · 219 sun hours · 60% humidity · Busy crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)

July

8/10

18–28°C (feels 29°C) · 8 rain days (80h) · 297 sun hours · 52% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)

Every month

Show the other 9 months in detail

January

5/10

-1–6°C (feels 3°C) · 10 rain days (115h) · 131 sun hours · 76% humidity · Quiet crowd · UV 1 (low)

February

6/10

1–11°C (feels 8°C) · 5 rain days (66h) · 162 sun hours · 65% humidity · Quiet crowd · UV 2 (low)

March

7/10

2–13°C (feels 10°C) · 8 rain days (91h) · 208 sun hours · 56% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)

April

7/10

5–16°C (feels 14°C) · 8 rain days (110h) · 224 sun hours · 54% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)

May

7/10

11–21°C · 15 rain days (156h) · 241 sun hours · 59% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)

August

8/10

18–28°C (feels 29°C) · 10 rain days (95h) · 272 sun hours · 56% humidity · Peak crowd · UV 6 (high)

October

7/10

9–17°C · 9 rain days (99h) · 180 sun hours · 72% humidity · Moderate crowd · UV 2 (low) · sunniest 1 in 10 days reach 4 (moderate)

November

5/10

3–10°C (feels 8°C) · 9 rain days (104h) · 113 sun hours · 80% humidity · Peak crowd · UV 1 (low)

December

4/10

1–6°C (feels 4°C) · 12 rain days (130h) · 102 sun hours · 83% humidity · Moderate crowd · UV 1 (low)

Frequently asked questions about visiting Zagreb

When is the best time to visit Zagreb?

June is the highest-scoring month (9/10 on the Holiday Climate Index). Typical conditions: 16–26°C (9 rainy days). The top three months by score are June, September, July.

What is the worst time to visit Zagreb?

December is the lowest-scoring month (4/10). Typical conditions: 1–6°C (12 rainy days).

When are crowds lowest in Zagreb?

Search-interest seasonality (Google Trends 2021-2025) is lowest in February and peaks in August. 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 Zagreb have good weather but fewer tourists?

June (climate 9/10, crowd index 13) and July (climate 8/10, crowd index 29) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Zagreb by month?

UV peaks at 7 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 3, Apr 4, May 5, Jun 6, Jul 7, Aug 6, Sep 4, Oct 2, Nov 1, Dec 1.

What is the UV index in Zagreb in July?

July is the peak UV month in Zagreb, with a daily-peak UV index of 7 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.

How high can UV get in Zagreb 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. July is the worst case: typical days average UV 7 (high), but the top 10% of days reach UV 8 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, September, October. Plan sun protection for the worst case, not the average.

Is air quality in Zagreb bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 10 months: January, February, March, April, May, August, September, October, November, December. The worst month is December with a typical-day mean of 35 µg/m³ (unhealthy); on the worst 10% of days PM2.5 reaches 63 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.