Question 1

What were the temperature extremes in Warsaw in 2025?

Accepted Answer

Warsaw swung between a high of **36.0°C (96.8°F)** and a low of **-12.0°C (10.4°F)** in 2025, giving the Polish capital a full annual temperature range of 48.0°C (86.4°F).

The hottest day arrived on **3 July 2025**, when the mercury peaked at 36.0°C (96.8°F) during a midsummer heat spell. At the opposite extreme, the coldest reading came on **25 December 2025**, when temperatures fell to -12.0°C (10.4°F) on Christmas Day. Across the full year, Warsaw averaged a mean temperature of 9.7°C (49.4°F).

These extremes were not isolated. Warsaw recorded 7 days in 2025 with highs at or above 30°C (86°F), and the cold season was equally pronounced, with 87 days dropping to freezing or below and 19 "ice days" where the temperature never climbed above 0°C (32°F).

For travelers and residents, this wide swing underlines Warsaw's classic continental climate: pack light, breathable clothing and sun protection for the short but intense summer heat, and prepare for hard frost and sub-zero days if you visit in midwinter. Spring and early autumn offer the gentlest conditions, sitting comfortably between these two seasonal extremes.

Question 2

Which months had the most sunshine in Warsaw in 2025?

Accepted Answer

**August was the sunniest month in Warsaw in 2025**, recording 368.5 hours of sunshine — roughly 11.9 hours of sun per day. It stood far ahead of every other month and helped make late summer the brightest stretch of the year in the Polish capital.

The next sunniest months were closely matched: April delivered 277.1 hours and June 276.4 hours (about 9.2 hours per day each), followed by May with 244.2 hours and July with 242.1 hours. Across all of 2025, Warsaw accumulated 2,126.2 hours of sunshine, averaging 177.2 hours per month.

By season, Warsaw's meteorological summer (June–August 2025) was the clear winner with 887.0 total sunshine hours, narrowly ahead of spring (March–May) at 715.7 hours. The darkest months were predictably December, with just 28.7 hours, and November, with 56.3 hours — a reminder of how short the daylight gets in winter.

August also paired its long sunny days with warmth and relatively dry conditions, posting a mean temperature of 18.5°C (65.3°F) and only 31.0mm (1.2 in) of rainfall. That combination made it the standout month for outdoor activities, sightseeing, and riverside time along the Vistula.

If you are planning a trip to Warsaw and want maximum sunshine, the data points clearly to August, with the broader April-to-September window offering consistently bright days. Travelers seeking the most reliable sun should aim for these months and avoid the dim, overcast conditions typical of late autumn and early winter.

Question 3

How much rainfall did Warsaw get in 2025, and which season was the wettest?

Accepted Answer

Warsaw received about **739.7 mm (29.1 inches)** of total precipitation in 2025, with rainfall spread fairly evenly across the warmer half of the year rather than concentrated in one season.

Spring (March to May 2025) was marginally the wettest meteorological season with **224.1 mm (8.8 in)**, edging out summer (June to August 2025) at **223.4 mm (8.8 in)**. Autumn (September to November 2025) followed with **200.3 mm (7.9 in)**, while the in-year winter months of January and February 2025 were by far the driest at just **67.5 mm (2.7 in)** combined.

On a monthly basis, the wettest individual months in Warsaw were:

- **May 2025:** 124.5 mm (4.9 in)
- **July 2025:** 122.4 mm (4.8 in)
- **October 2025:** 115.6 mm (4.6 in)

The driest month was **February 2025**, with only 12.7 mm (0.5 in). On average, Warsaw saw roughly 61.6 mm (2.4 in) of precipitation per month across 2025.

For visitors, this pattern means late spring and mid-summer carry the highest chance of rain showers in Warsaw, so packing a light rain jacket is wise from May through July. Late winter, by contrast, is notably dry, though the cold keeps much of that limited precipitation as snow or sleet rather than rain.

Question 4

Which month is the windiest in Warsaw, and how strong are the winds throughout 2025?

Accepted Answer

January was the windiest month in Warsaw in 2025, with average wind speeds of 15.2 km/h (9.4 mph). Across the full year, Warsaw remained a relatively gentle-wind city, averaging just 12.6 km/h (7.8 mph).

Wind speeds in Warsaw stayed within a narrow band throughout 2025, rarely producing dramatic swings. After the January peak, breezes eased steadily, reaching their calmest in November at 10.4 km/h (6.5 mph). Other notably breezy months included June at 14.9 km/h (9.3 mph) and October at 14.1 km/h (8.8 mph).

Seasonally, the differences were modest. Winter (January–February 2025) was the windiest stretch at 13.1 km/h (8.2 mph), followed closely by summer (June–August) at 12.7 km/h (7.9 mph) and spring (March–May) at 12.6 km/h (7.8 mph). Autumn (September–November) was the calmest season at 12.0 km/h (7.5 mph).

For visitors and residents, this means Warsaw is an easy-going city for outdoor plans year-round. Even in the windiest month, average speeds stay well within a light breeze, so walking tours, cycling, and riverside strolls along the Vistula are comfortable in nearly every season. If you prefer the stillest conditions, late autumn offers Warsaw's gentlest winds, while January travelers should simply pack a windproof layer for the city's breeziest spells.

Question 5

What is the most humid time of year in Warsaw?

Accepted Answer

Warsaw is most humid in late autumn and early winter, with **November 2025 being the dampest month of the year at an average relative humidity of 92.6%**. Humidity stays high through the colder half of the year before air dries out noticeably in spring and summer.

Across 2025, Warsaw averaged 77.0% relative humidity. The three most humid months were all in the cool season:

- **November 2025: 92.6%**
- **December 2025: 90.5%**
- **October 2025: 87.6%**

By contrast, the driest air arrived in late spring and early summer, with **May 2025 the least humid month at 61.8%**, followed closely by June (62.0%) and April (62.7%). On a seasonal basis, autumn (September–November) averaged 86.8% and winter (January–February) 85.8%, while spring (March–May) was the driest season at just 65.6%.

This pattern is typical for Warsaw's continental climate: damp, foggy conditions take hold as temperatures fall, with November averaging only 3.8°C (38.8°F). The high humidity combines with low light to create the grey, raw feel of a Warsaw late autumn, even though monthly rainfall is moderate. If you prefer crisper, drier air, late spring is the better bet, when May's milder 12.1°C (53.8°F) days come with humidity more than 30 percentage points lower than November's. Visitors and residents in Warsaw can expect the muggiest, mistiest weather between October and December 2025.

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FAQ

What were the temperature extremes in Warsaw in 2025?

Which months had the most sunshine in Warsaw in 2025?

How much rainfall did Warsaw get in 2025, and which season was the wettest?

Which month is the windiest in Warsaw, and how strong are the winds throughout 2025?

What is the most humid time of year in Warsaw?