Weather by month for Zagreb, the best months to go and how Croatia's regions differ, scored from 10 years of climate data.
Apr, Jun, Sep, Oct
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 17°C to 26°C · 9–11 rain days
May, Jul, Aug
Still good weather, just not quite the top months.
Highs 21°C to 28°C · 9–15 rain days
Jan, Dec
The weakest weather of the year: too hot, too cold or too wet.
Highs 5°C to 6°C · 9–10 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 5°C / -2°C | 10 days (63 mm) | 5.3 h/day | 2.6/10 |
| February | 9°C / 0°C | 8 days (64 mm) | 6.6 h/day | 4.0/10 |
| March | 13°C / 2°C | 9 days (56 mm) | 8.5 h/day | 5.7/10 |
| Best month: April | 17°C / 6°C | 9 days (62 mm) | 10.0 h/day | 7.8/10 |
| May | 21°C / 11°C | 15 days (117 mm) | 10.4 h/day | 7.4/10 |
| Best month: June | 26°C / 16°C | 11 days (82 mm) | 12.3 h/day | 7.9/10 |
| July | 28°C / 18°C | 9 days (81 mm) | 12.6 h/day | 7.7/10 |
| August | 28°C / 18°C | 9 days (76 mm) | 11.9 h/day | 7.8/10 |
| Best month: September | 22°C / 13°C | 10 days (95 mm) | 9.5 h/day | 8.4/10 |
| Best month: October | 17°C / 9°C | 9 days (87 mm) | 7.5 h/day | 8.0/10 |
| November | 11°C / 4°C | 9 days (87 mm) | 5.1 h/day | 4.7/10 |
| December | 6°C / 0°C | 9 days (62 mm) | 4.9 h/day | 3.1/10 |
Figures for Zagreb; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
5°C / -2°C · 10 rain days · 5.3 h sun
Zagreb highs average just 5.3°C with lows near -2°C, and rain or snow falls on about 10 days. Sun hours are the lowest of the year at 5.3. The score of 2.6 marks this as tough weather month, cold and grey. New Year's Day and Epiphany (6 January) fall in this month, which is quiet for travel otherwise.
9°C / 0°C · 8 rain days · 6.6 h sun
Highs climb to 8.9°C but it's still cold, with 8.3 rain days and only 6.6 hours of sun. The verdict is ok, scoring 4 out of 10, an improvement on January but still a shoulder-season month rather than a highlight.
13°C / 2°C · 9 rain days · 8.5 h sun
Spring starts to show with highs of 12.5°C and 9 rain days. Sun hours rise to 8.5. This is an ok month, scoring 5.7, good for those who want fewer crowds before the warmer season arrives.
17°C / 6°C · 9 rain days · 10.0 h sun
April is rated 'best', scoring 7.8, with highs of 16.8°C and 10 hours of sun. Rain falls on about 9 days. Easter Sunday and Monday land in April in 2026, adding a holiday weekend to an already strong month for travel.
21°C / 11°C · 15 rain days · 10.4 h sun
May scores 7.4, a 'good' month, with highs of 20.6°C. It's also the wettest month of the year, with 14.9 rain days and 117mm of rain, so pack for showers. International Workers' Day (1 May) and National Day (30 May) both fall in this month.
26°C / 16°C · 11 rain days · 12.3 h sun
June is one of the best months, scoring 7.9, with highs of 26.2°C and 12.3 hours of sun daily. Rain days drop to 10.5. Corpus Christi and Anti-Fascist Struggle Day (22 June) both fall in June 2026.
28°C / 18°C · 9 rain days · 12.6 h sun
July brings the hottest weather of the year, with highs of 28.4°C and lows of 18°C. It's also one of the driest months, with just 9.4 rain days and 12.6 hours of sun. The score of 7.7 keeps it in the 'best' category, ideal for coast and beach time.
28°C / 18°C · 9 rain days · 11.9 h sun
August stays hot at 28°C with similarly dry conditions, 9.1 rain days and nearly 12 hours of sun. It scores 7.8, a 'best' month. Victory and Homeland Thanksgiving Day (5 August) and Assumption Day (15 August) both fall this month.
22°C / 13°C · 10 rain days · 9.5 h sun
September is the top-rated month, scoring 8.4, with highs easing to 22.4°C and sun hours at 9.5. Rain increases slightly to 9.8 days and 95mm, but the combination of warmth and lighter crowds makes it a strong choice.
17°C / 9°C · 9 rain days · 7.5 h sun
October scores 8, still a 'best' month, with highs of 17.1°C and 8.8 rain days. Sun hours drop to 7.5 as autumn sets in, but conditions remain mild and pleasant for travel.
11°C / 4°C · 9 rain days · 5.1 h sun
November cools sharply to 10.5°C highs with 9.2 rain days and just 5.1 hours of sun. The score of 4.7 reflects an 'ok' but gloomier month. All Saints' Day (1 November) and Remembrance Day (18 November) both fall in November.
6°C / 0°C · 9 rain days · 4.9 h sun
December is tough weather territory again, with highs of just 6.3°C, lows near freezing, and only 4.9 hours of sun. The score of 3.1 marks it as a cold, dark month. Christmas Day and St. Stephen's Day bring holiday traffic despite the weather.
Regional differences
Average daytime high each month, coloured by that city's own month score.
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zagreb | 5°C | 9°C | 13°C | 17°C | 21°C | 26°C | 28°C | 28°C | 22°C | 17°C | 11°C | 6°C |
| Split | 11°C | 13°C | 15°C | 18°C | 22°C | 28°C | 31°C | 31°C | 26°C | 21°C | 16°C | 13°C |
| Rijeka | 9°C | 11°C | 13°C | 17°C | 21°C | 26°C | 29°C | 29°C | 23°C | 19°C | 14°C | 11°C |
| Osijek | 5°C | 10°C | 13°C | 18°C | 22°C | 27°C | 29°C | 29°C | 24°C | 18°C | 12°C | 7°C |
| Zadar | 10°C | 12°C | 14°C | 17°C | 21°C | 27°C | 30°C | 30°C | 25°C | 20°C | 15°C | 12°C |
Best Good OK Tough weather
By trip type
City sightseeing
September and October bring highs of 22.4°C and 17.1°C with less rain than spring, good for walking around Zagreb or coastal towns. April and June also work, with highs of 16.8°C and 26.2°C and 10 to 12.3 hours of sun a day, before or after the summer heat and crowds.
Beach
July and August are the hottest months, with highs of 28.4°C and 28°C and close to 12 hours of sun daily, ideal for swimming. June and September offer slightly cooler highs of 26.2°C and 22.4°C with similar sunshine, a good trade-off against peak-season heat.
Hiking & nature
April, September and October suit hiking, with highs ranging from 16.8°C to 22.4°C, cooler than the summer peak. October has the fewest rain days of the three at 8.8, while April gets 10 hours of sun and September 9.5, giving comfortable trail conditions.
Events calendar
Public holidays: New Year's Day (1 Jan), Epiphany (6 Jan)
Public holidays: Easter Sunday (5 Apr), Easter Monday (6 Apr)
Public holidays: International Workers' Day (1 May), National Day (30 May)
Public holidays: Corpus Christi (4 Jun), Anti-Fascist Struggle Day (22 Jun)
Public holidays: Victory and Homeland Thanksgiving Day and the Day of Croatian defenders (5 Aug), Assumption Day (15 Aug)
Public holidays: All Saints' Day (1 Nov), Remembrance Day (18 Nov)
Public holidays: Christmas Day (25 Dec), St. Stephen's Day (26 Dec)
Keep planning
FAQ
Yes, August scores 7.8 out of 10 and is one of the top months. Zagreb highs reach 28°C with lows around 17.8°C, and there are only about 9.1 rain days with 11.9 hours of sun a day. It's hot and dry, good for coastal time, but inland cities can feel sticky at midday.
Yes, September is the highest-scoring month at 8.4 out of 10. Daytime highs average 22.4°C and nights cool to 13.1°C, which feels more comfortable than peak summer. Rain picks up slightly to 95mm over about 9.8 days, but sunshine still averages 9.5 hours daily.
Yes, April rates 7.8 out of 10 and is marked as one of the best months. Highs average 16.8°C and lows 6.1°C, so days are mild but evenings are still cool. May brings more rain than April, with 117mm over 14.9 days, so April tends to stay drier with 62mm over 9.2 days.
No, January scores only 2.6 out of 10, the lowest of the year. Zagreb highs average just 5.3°C and lows drop to -2°C, with 10.3 rain days and only 5.3 hours of sun. It's the coldest, greyest month, which suits travellers wanting quiet winter streets rather than beach weather.
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