Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Gliwice is from June, July, September, but considering flight prices and crowds, the best months to visit are May, June, September. — consistent weather climate
🌥Mild
| Score | 10 | 11 | 24 | 43 | 75 | 82 | 79 | 79 | 80 | 49 | 16 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Cold | Cold | Cold | Mild | Pleasant | Humid | Humid | Mild | Cold | Cold | Cold |
| Temperature | -3–2°C | -1–5°C | 0–9°C | 4–14°C | 9–19°C | 14–24°C | 15–25°C | 16–25°C | 12–20°C | 7–15°C | 3–8°C | -1–4°C |
| Feels like | -8–-2°C | -6–1°C | -4–5°C | 1–11°C | 7–17°C | 13–23°C | 15–25°C | 16–26°C | 10–19°C | 4–12°C | -1–5°C | -5–0°C |
| Precipitation | 53mm 14 days | 58mm 12 days | 42mm 10 days | 57mm 12 days | 67mm 11 days | 67mm 10 days | 82mm 10 days | 87mm 10 days | 79mm 11 days | 64mm 11 days | 56mm 11 days | 53mm 13 days |
| Sunshine | 3.0h ☀︎ 35% | 4.2h ☀︎ 42% | 7.3h ☀︎ 61% | 9.3h ☀︎ 67% | 10.2h ☀︎ 66% | 12.1h ☀︎ 74% | 12.2h ☀︎ 76% | 10.9h ☀︎ 75% | 8.8h ☀︎ 69% | 6.2h ☀︎ 58% | 3.7h ☀︎ 41% | 2.4h ☀︎ 30% |
| Wind | SW · 22 km/h | SW · 22 km/h | W · 21 km/h | NW · 21 km/h | N · 19 km/h | NW · 18 km/h | W · 18 km/h | W · 17 km/h | SW · 18 km/h | SW · 20 km/h | SW · 19 km/h | SW · 21 km/h |
| Humidity (%) | 84% | 80% | 72% | 68% | 69% | 69% | 68% | 70% | 74% | 79% | 84% | 86% |
| Day length | 8.6h | 10.1h | 11.9h | 13.8h | 15.5h | 16.3h | 15.9h | 14.4h | 12.6h | 10.7h | 9.0h | 8.1h |
| Tourist Crowds | Low season | Shoulder season | Low season | Low season | Shoulder season | Shoulder season | High season | High season | Shoulder season | Shoulder season | Low season | Low season |
This one-day festival in mid-June opens up Upper Silesia's industrial heritage sites to the public, and Gliwice's iconic…
From late November through December, Gliwice's main square fills with wooden stalls selling mulled wine, ornaments, and…
Gliwice inverts the typical European travel calendar: its streets are emptiest and easiest to navigate during the sunlit peak of summer, and at their absolute most crowded when the weather turns raw, dark, and freezing in the depths of late autumn.
Set above the slow bends of the Kłodnica river on the Silesian Highlands, Gliwice does not cater to generic holiday postcards. This is a formidable industrial anchor that swapped coal dust and blast furnaces for robotics, precision manufacturing, and twenty thousand engineering students. Because the city's pulse is driven by its university rather than holidaymakers, its seasonal rhythm catches outsiders completely off guard. When summer arrives, the student population evaporates, leaving behind a tranquil, sunlit central European town of arcaded squares and leafy boulevards. Come November, the halls refill, the streets jam with traffic, and the cold settles in with unrelenting persistence. If you want Gliwice at its absolute best, you arrive when the weather is warm and the rest of the world thinks the city has gone to sleep.
June through August delivers the best weather of the year, coupled with an unexpected gift: elbow room. Once the academic semester winds down at the Silesian University of Technology, the customary rush of students clears out. What remains is a relaxed regional hub where afternoons routinely linger in the mid-twenties and daylight stretches well past nine in the evening. You can cross the historic Rynek without dodging crowds, claim an outdoor table beneath the pastel-painted Renaissance and baroque facades, and wander shaded avenues without the usual commuter bustle.
Summer air in Upper Silesia carries occasional heavy thundershowers that wash the streets clean before giving way to crisp afternoon light. Mid-June brings Industriada, the regional festival celebrating Silesia's manufacturing history. It is the defining moment of the early summer calendar, unlocking historic industrial sites across the region. In Gliwice, the undisputed centerpiece is the Radiostacja Gliwice—the soaring 1930s larch-wood transmission tower that remains one of the tallest wooden structures in the world. For one day, the grounds around the tower transform into open-air concert grounds and exhibition spaces, drawing regional history buffs for tours that are normally off-limits.
July and August carry that relaxed energy forward. While occasional rain showers hit in short, intense bursts, they rarely disrupt a day of exploring. When midday heat builds up, the glass pavilions of Palmiarnia Miejska provide a lush, tropical refuge shaded by towering date palms and century-old succulents. For a city built on heavy industry, summer reveals an unexpectedly green, breezy, and peaceful reality.
September is arguably the sweetest weather window in Upper Silesia. The stifling midsummer humidity vanishes, replaced by clear skies, afternoon temperatures hovering right around 20°C, and crisp, invigorating mornings. The city's parks take on a burnt-amber hue, and the outdoor cafes around the Rynek remain packed well into dusk.
Yet as September rolls into October, the city changes hands. Tens of thousands of students return to the lecture halls and dormitories near the Kłodnica river, bringing an electric, youthful hum back to the pubs and bakeries. The quiet ease of summer disappears almost overnight. Pavements fill with brisk pedestrian traffic, trams run at full capacity, and finding a quiet seat around the center takes genuine effort.
By mid-October, the Silesian autumn loses its warmth. Daylight hours drop sharply, afternoon temperatures struggle to break into the mid-teens, and the air takes on a damp chill. While early autumn offers fine walking conditions, by the end of October the transition into winter is unmistakable. The skies begin to lock into a persistent overcast canopy that rarely lifts until spring.
November and December are the busiest months of the year in Gliwice, and they also happen to deliver the bleakest weather. This is the central contradiction of the city. As daylight collapses to fewer than three hours of pale sunshine a day and temperatures plunge toward freezing, the city operates at maximum capacity. Commuters, university faculties, and factory logistics operate at full tilt, filling every corner of the urban core while the weather turns bitterly damp.
December cuts through the gloom with the Gliwice Christmas Market. From late November through Christmas, the Rynek fills with timber chalets beneath canopy lighting. The scent of spiced mulled wine, grilled sheep's milk cheese, and roasted nuts cuts through the frost. On December evenings, the square is genuinely packed with multi-generational crowds, locals gathering after work, and families bundled into heavy coats against the sleet. It is atmospheric and remarkably authentic, but it demands serious cold-weather gear: the damp Silesian air makes near-freezing temperatures feel significantly harsher than the thermometer suggests.
January and February offer no reprieve in comfort, though the festive crowds disperse slightly. These are the coldest, greyest months of the year, where temperatures routinely hover below freezing and snow quickly turns to brown slush along the main thoroughfares. Unless you have business in town or wish to experience a working Polish city stripped of all tourist pretension, mid-winter demands stamina.
Spring arrives reluctantly in the Silesian Highlands. March remains mostly winter by another name, with icy winds sweeping off the highlands, bare branches along the Kłodnica, and damp afternoons that rarely exceed single-digit temperatures. It is an awkward time to visit, caught between the cozy hospitality of winter and the vitality of green shoots.
April begins the real turnaround. Daylight expands noticeably, and brief stretches of mild sun coax the city out of doors, though rain is frequent and sudden cold snaps can catch you unprepared. It is a temperamental month that rewards flexibility—warm enough for a long walk one afternoon, wet and sharp the next.
By May, Gliwice hits its stride. Temperatures climb comfortably toward 19°C, chestnut trees bloom along the avenues, and outdoor dining tables return to the perimeter of the Rynek. The city feels refreshed, lively, and optimistic without the heavier traffic of late autumn. May serves as the perfect prelude to the quiet glory of summer, offering full days of sunshine and comfortable walking weather before the academic year wraps up.