Poland climate

Monthly averages for Warsaw, 2021–2025

In Warsaw, the warmest month is July, with an average high of 26°C, and the coldest is February, when nights average −2°C.

About 688 mm of rain falls in a year, on roughly 136 days. July is the wettest month (93 mm) and March the driest (32 mm).

Wind is strongest in January (15 km/h on average) and lightest in August (10 km/h).

Compared with Dublin, July afternoons are 6°C warmer, and January afternoons 5°C colder.

The hottest day in 2021–2025 reached 35.7°C (3 July 2025), and the coldest night fell to −19.2°C (17 January 2021).

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.

Warsaw month by month
Month	High °C	Low °C	Rain mm	Rain days	Sun h/day	Wind km/h
January	3	−2	58	15	2.5	15
February	5	−2	47	11	4.5	14
March	10	0	32	11	7.4	12
April	14	4	58	13	9.1	13
May	19	8	62	10	11.5	12
June	24	14	59	11	12.7	11
July	26	16	93	14	11.6	11
August	25	15	91	13	10.6	10
September	21	11	43	8	9.1	11
October	14	7	50	11	6.3	13
November	7	2	46	10	3.1	12
December	3	−1	49	11	1.9	13