Olsztyn weather and climate in 2025
Day
23 °C
Night
13 °C
Sea
17 °C
Precipitation
74 mm
in month
Rainy days
12 days
in month
Daylight
16 hours
average
Sunshine
8 hours
average
Humidity
76 %
Day
23 °C
Night
13 °C
Sea
17 °C
Precipitation
74 mm
in month
Rainy days
12 days
in month
Daylight
16 hours
average
Sunshine
8 hours
average
Humidity
76 %
Overview: Olsztyn
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Weather overview for Olsztyn
Weather overview
Olsztyn is a city with varied seasons; warm summers and cold, snowy winters. The temperature fluctuates from an average daytime high of 23 °C (74 °F) in July to a chilly 0 °C (31 °F) in January. Throughout the year, Olsztyn sees a fair amount of precipitation with the wettest month being July with an average rainfall of 74 mm (2.93 in), which typically falls over 12 days. Calm winds prevail for much of the year with average wind speeds of 3 m/s.
January weather
January in Olsztyn greets you with a chill, with temperatures frequently plunging below freezing. The landscape is often blanketed in snow, creating a serene winter wonderland. Daytime highs struggle to rise above 0 °C (31 °F) while nights are even colder at -5 °C (23 °F). Expect a moderate amount of precipitation, with 42 mm (1.66 in) falling over approximately 12 days.
February weather
February in Olsztyn remains cold with a slight warming trend. Temperatures still waver around the freezing point during the day with average highs of 1 °C (33 °F), while nights remain very cold at -4 °C (24 °F). Expect fewer wet days than January, with precipitation amounting to 29 mm (1.13 in) over 9 days.
March weather
March sees the arrival of spring in Olsztyn with a noticeable rise in temperature. Daytime highs average around 6 °C (42 °F), while the chill of winter lingers at night with average lows of -1 °C (30 °F). The city begins to thaw, resulting in 37 mm (1.47 in) of rainfall across 10 days.
April weather
April's spring warmth accelerates in Olsztyn as temperatures climb to an enjoyable 13 °C (55 °F) during the day, with nights becoming less frigid at 3 °C (38 °F). The city's flora begins to bloom, and outdoor activities become more inviting. Rainfall decreases slightly to 33 mm (1.29 in), spread over 9 days.
May weather
In May, Olsztyn fully embraces spring with an average high of 19 °C (65 °F), which is ideal for exploring the city's parks and lakes. Nighttime temperatures are warmer too, at 8 °C (46 °F). The city can expect a fair amount of rain, with 54 mm (2.12 in) falling across 10 days, nurturing the lush green landscapes.
June weather
June marks the beginning of summer in Olsztyn with the highest temperature average rising to 21 °C (70 °F). Evenings are comfortable at an average of 11 °C (52 °F). The city receives its heaviest rainfalls during this time with 78 mm (3.09 in) over 11 days. Outdoor activities are enjoyed to their fullest as the days grow longer.
July weather
Olsztyn is at its warmest in July with average daytime temperatures peaking at 23 °C (74 °F), providing ample warmth for swimming and other summer enjoyment. Nighttime temperatures are mild at 13 °C (56 °F). This month also sees the most rainfall, with 74 mm (2.93 in) drenching the region over 12 days.
August weather
August continues to delight with warm weather in Olsztyn. The average daytime temperature remains high at 23 °C (73 °F), and nights are comfortably cool at 13 °C (55 °F). Less rainfall is expected than in July, with 71 mm (2.78 in) falling across 11 days.
September weather
September ushers in the start of autumn in Olsztyn, with a notable decrease in temperatures to an average high of 17 °C (63 °F) during the day, and cooler nights at 9 °C (48 °F). The rainfall amount is moderate with 58 mm (2.29 in) falling over a spread of 10 days.
October weather
October's autumnal chill sets in as Olsztyn's landscape transforms with vibrant foliage. Daytime temperatures average 12 °C (53 °F), while nights become brisk at 5 °C (41 °F). The city receives a modest amount of precipitation with 50 mm (1.98 in) over 11 days.
November weather
November sees a significant cooling trend as Olsztyn prepares for winter. Average daytime temperatures drop to 5 °C (41 °F), with night temperatures nearing freezing at 0 °C (33 °F). Rainfall remains consistent with October, with 50 mm (1.99 in) expected over 11 days.
December weather
December welcomes winter back to Olsztyn with short days and long nights. Average highs reach just 1 °C (33 °F), while the chill of the night averages -4 °C (26 °F). With 48 mm (1.87 in) of rainfall, which may fall as snow, over 12 days, the city is often blanketed in white.
FAQs
How cold does it get in Olsztyn during January?
January in Olsztyn is generally cold with average daytime highs hovering around a chilly 0 °C (31 °F), and nighttime lows can drop to -5 °C (23 °F). Expect to frequently encounter below-freezing temperatures.
Are temperatures in Olsztyn in February warmer than in January?
Slightly warmer than January, February in Olsztyn sees daytime temperatures inching up to an average high of 1 °C (33 °F), though you'll still need your warmest winter attire to face the frosty conditions.
Is March in Olsztyn still cold?
March in Olsztyn is a transitional month where you'll experience a relief from the harsh winter cold with average daily highs of 6 °C (42 °F); however, temperatures can drop to around -1 °C (30 °F) at night.
Does April in Olsztyn feel like spring?
Definitely, April in Olsztyn is when the true essence of spring can be felt with milder temperatures averaging 13 °C (55 °F) and nature awakening with vibrant colors and fresh scents.
Is May in Olsztyn a good month for outdoor activities?
Yes, May is perfect for outdoor activities in Olsztyn with pleasant daytime temperatures averaging 19 °C (65 °F), and nature in full bloom, offering beautiful backdrops for picnics and walks.
How are the temperatures in Olsztyn during the day in June?
June brings warm and agreeable daytime temperatures of 21 °C (70 °F) to Olsztyn, just right for enjoying a variety of summer activities.
What is the average high temperature in Olsztyn in July?
July in Olsztyn boasts an average daytime high of 23 °C (74 °F), the warmest it gets all year, creating perfect conditions for summer outings and activities.
Is August significantly cooler than July in Olsztyn?
August is only slightly cooler than July in Olsztyn, with an average high of 23 °C (73 °F), ensuring the continuation of warm and pleasant summer days.
Are temperatures still warm in Olsztyn in September?
In September, Olsztyn still enjoys warm weather with daytime highs of 17 °C (63 °F), making it a comfortable month for both indoor and outdoor activities.
What can I expect from the weather in Olsztyn during October?
October in Olsztyn is a month of transition with cooler temperatures settling in, averaging 12 °C (53 °F) during the day, and a landscape awash with fall colors.
What is the temperature range I can expect in Olsztyn in November?
November in Olsztyn exhibits a decrease in temperature, ranging from a daytime high of 5 °C (41 °F) to a night low nearing freezing at 0 °C (33 °F).
How do the temperatures feel in Olsztyn during December?
December in Olsztyn is decidedly wintry, with temperatures hovering around 1 °C (33 °F) during the day and dropping to an average of -4 °C (26 °F) at night, preparing the city for the festive season.
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