What is the weather like in Olsztyn right now?
It is currently 17°C in Olsztyn with cloudy. It feels like 18°C, humidity is 89% and the wind is SW 7 km/h.
Today (Saturday) reaches a maximum of 20°C and a minimum of 15°C, with 1.9 mm of rain and 0 hours of sunshine. Sunrise is at 05:41 and sunset at 19:36.
Olsztyn weather tomorrow
Tomorrow (Sunday) the maximum temperature in Olsztyn is 25°C and the minimum 16°C. Around 0 mm of rain is expected with 7 hours of sunshine, and the chance of rain is 10%. The data is refreshed several times a day through Open-Meteo.
Olsztyn weather this week and next week
Over the coming week the average maximum temperature in Olsztyn sits around 22°C and the average minimum around 15°C. Roughly 11 mm of rain is expected, spread across 3 days, with 0 largely sunny days.
The warmest day in the 14 day forecast for Olsztyn is Sunday 30 Aug at 25°C. The coldest night falls on Thursday 10 Sept at 10°C. Click any day for hourly detail.
Rain, sunshine and UV in Olsztyn
A daily rainfall total says little on its own: the same 5 mm can be one short downpour or a grey day of drizzle, which is why the hourly chart above is often the more useful of the two. Over the next fortnight the highest UV index for Olsztyn is 5, which is low to moderate.
How reliable is a 14 day forecast?
The first three to five days are generally very accurate. After that the certainty drops off and it is better read as a trend than as an exact daily prediction. Our data comes from Open-Meteo, which combines national weather models — among them the Met Office, DWD and ECMWF — and recomputes them several times a day using measurements from stations worldwide.
Forecast for Olsztyn last updated: 29 August 2026 at 14:25. See also all Poland forecasts and the European weather map.