Climate and monthly weather forecast
Warsaw, Poland

Warsaw experiences a Marine west coast, a warm-summer climate, predominantly known as Cfb in the Köppen climate classification. This climate is often found on the western side of continents, suggesting the influence of the Atlantic or Pacific Oceans. The city's geographical positioning plays a significant role in shaping its weather patterns. An analysis of monthly averages illustrates a distinct division between seasons as the climate fluctuates.

Temperature variations are observed throughout the entire year. During the winter period, from December to February, the temperature averages range from a high of 1.9°C (35.4°F) to a low of -4.8°C (23.4°F). Comparatively, the summer months, June through August, witness a significant rise in temperature with averages hovering between a high of 23.4°C (74.1°F) and a low of 12.3°C (54.1°F). The transitions between these seasons, spring and autumn, experience moderate temperatures.

Rainfall is another key weather parameter that experiences changes over the year. Summers tend to be rainier than other seasons, with the highest average rainfall recorded in July at 73mm (2.87"). The drier months fall between January and April with the least rainfall observed in February, registering 26mm (1.02") on average. In terms of daylight hours, the longest days are in June with an average of 16.7 hours of daylight, while the shortest days occur in December with an average of 7.8 hours.

Warsaw's weather doesn't follow any unexpected patterns, showcasing a standard climate characteristic of a marine west coast region. However, the steady increase in temperature and daylight hours moving towards summer is noteworthy, as is the general decline of these elements as the city shifts into winter.

The most favorable time for a visit to Warsaw tends to be between May and September, when the weather conditions are optimal. During this time, the average temperatures range from a maximum of 19.3°C (66.7°F) to a minimum of 8.1°C (46.6°F), providing a pleasant atmosphere for exploring the city. Daylight hours average around 15.7 to 16.7 hours in this period, allowing ample time for sightseeing. The UV index during these months ranges from moderate to high, suggesting the need for sun protection.

The least advisable time to visit Warsaw would be during the colder winter months, from December to February. Average low temperatures drop down to -4.8°C (23.4°F) while the average high only reaches 1.9°C (35.4°F). Combined with the shorter days, averaging only about 8.3 hours of daylight in December, and the low UV index, sightseeing can be a less than enjoyable experience.

Spring weather in Warsaw, between March and May, presents a slow but steady increase of average temperatures, from 6.8°C (44.2°F) to 19.3°C (66.7°F). Rainfall during this season is moderate, falling between 30mm (1.18") and 55mm (2.17"). Daylight hours progressively extend, starting at around 11.9 hours in March and stretching to about 15.7 hours by May. The UV index incrementally rises through the season, beginning at 2 and reaching 5 by May.

Summer in Warsaw, from June to August, showcases the warmest weather of the year with temperatures hitting a peak of 23.6°C (74.5°F) and dipping down to 12.3°C (54.1°F). Rainfall is highest in the summer months, particularly in July with an average of 73mm (2.87"). The daylight hours are the longest, peaking at 16.7 hours in June. The UV index during this period ranges from 6 to 5, indicating the potency of the summer sun.

Autumn in Warsaw, observed from September to November, brings with it a gradual decrease in average temperatures, sliding from a high of 17.9°C (64.2°F) to a low of 0.3°C (32.5°F). The rainfall during these months falls within an acceptable range, decreasing from 47mm (1.85") in September to 40mm (1.57") in November. Daylight hours start to reduce, shifting from 12.7 hours in September to 8.8 hours in November. The UV index lowers as well during the autumn period, falling from 4 to 1.

Winter in Warsaw embraces the colder climate between December and February. The average temperatures fluctuate between a high of 1.9°C (35.4°F) and a low of -4.8°C (23.4°F) during these months. December sees the least amount of precipitation of the year, receiving an average rainfall of 35mm (1.38"). The winter season also has the shortest daylight hours, ranging from 7.8 to 8.3 hours. During this period, the UV index falls to a low 0 to 1 range, reflecting the minimal exposure to direct sunlight.

January's winter weather in Warsaw, Poland, typically manifests in a mix of cold and icy conditions. Snowfall and frost are frequent guests, occasionally creating a picturesque, winter wonderland. The temperature ranges from a frigid -4.8°C (23.4°F) at night to a chilly daytime high of 0.4°C (32.7°F). Weather in January »

February serves as a continuation of Warsaw's winter, with a slight climb in temperatures compared to January, though still favoring cold boundaries. This period is marked by occasional snowfall and frequent frost, urging residents to keep their winter gear at hand. Weather in February »

The transition from winter to spring commences in March, bringing a noticeable uplift in temperatures and daylight hours in Warsaw. Patches of snow begin to melt, and the landscape slowly starts to revive. The temperatures start to climb up from -1°C (30.2°F) at night to slightly warmer 6.8°C (44.2°F) during the day. Weather in March »

Warsaw enlivens in April as spring establishes its stronghold over the city's climate. The flora breaks into a riot of colors with blooming flowers punctuating the landscape. Temperatures vary notably from a mild 3.1°C (37.6°F) at night to a comfortable 13.1°C (55.6°F) by day, effectively quelling the winter chill. Weather in April »

May sees a further elevation in Warsaw's climatic conditions to a more summertime feel. The city embodies vibrancy defined by lush parks and bustling outdoor cafes. Government office and institutional premises enhance the city's attraction, boasting of their established gardens. Weather in May »

June registers the advent of summer, with the solstice marking the year's longest day. While the city basks in extended daylight, the weather becomes steadily hotter. Temperature oscillations, spanning from a pleasant 11.3°C (52.3°F) to a summery 21.9°C (71.4°F), invite outdoor activities. Weather in June »

July, the hottest month in Warsaw, witnesses temperatures ascending as high as 23.6°C (74.5°F), with the lowest average temperature recorded around 12.9°C (55.2°F). Despite the presence of occasional showers, it does not dampen the overall summer climate. Weather in July »

August weather in Warsaw maintains the summer momentum with only a slight drop in temperatures from July. The city continues to resonate with lively summertime activities both day and night. The continuing appeal of city parks, laden with pullulating natural colors, draws locals and tourists alike. Weather in August »

September marks the onset of autumn in Warsaw. Gradually receding temperatures bring a fresh and crisp feel to the air. The shift towards cooler weather leads to the transformation of the city's foliage into entrancing hues of red, orange, and yellow. Weather in September »

October propels Warsaw deeper into autumn, laced with cooler temperatures and shorter days. The city dons a spectacular display of vibrant autumn colors in various hues. A characteristic nip in the air indicates the temperatures alternating between 4.4°C (39.9°F) to 12.3°C (54.1°F). Weather in October »

The final vestiges of autumn linger in November as Warsaw prepares to welcome winter. The shedding trees and yet cooler temperatures are clear forecasters of the impending winter season. The range of temperatures lies from 0.3°C (32.5°F) to 5.5°C (41.9°F), confirming the swift approach of winter. Weather in November »

Winter firmly takes hold in December, mirroring January's weather, but with slightly milder temperatures. Through the festive season, Warsaw radiates in a different light, reflecting the holiday spirit in the air. The chilly temperature band stretches from -2.8°C (27°F) to 1.9°C (35.4°F), inaugurating the season of snows and freezes. Weather in December »