Croatia climate

Monthly averages for Zagreb, 2021–2025

In Zagreb, the warmest month is July, with an average high of 29°C, and the coldest is January, when nights average −1°C.

About 903 mm of rain falls in a year, on roughly 111 days. May is the wettest month (107 mm) and February the driest (41 mm).

Wind is strongest in April (9 km/h on average) and lightest in December (6 km/h).

Compared with Dublin, July afternoons are 9°C warmer, and January afternoons 2°C colder.

The hottest day in 2021–2025 reached 37.1°C (23 July 2022), and the coldest night fell to −10.5°C (21 January 2024).

Temperature

Bars run from the average night-time low to the average daytime high, in °C.

Average total rainfall each month, in millimetres.

Average wind speed at 10 metres each month, in km/h.

Zagreb month by month
Month	High °C	Low °C	Rain mm	Rain days	Sun h/day	Wind km/h
January	7	−1	72	11	5.4	7
February	10	0	41	5	7.1	7
March	13	2	66	9	8.8	8
April	16	6	71	10	9.5	9
May	20	11	107	14	10.5	8
June	27	16	59	8	12.8	7
July	29	18	81	8	12.6	7
August	28	17	79	10	11.9	6
September	23	13	94	9	9.3	7
October	17	9	73	8	7.9	7
November	10	3	91	10	5.2	6
December	6	0	69	10	4.4	6