Monthly climate guide
Olsztyn weather in June
June in Olsztyn is typically warm, with average daytime highs around 21°C (70°F) and night-time lows near 11°C (52°F). The month usually brings about 81 mm of rain (some rain) and is often cloudy. Daytime highs are 3°C warmer than May and about the same as July.
What stands out in June
- Just 140 km apart, but Olsztyn runs about 2°C warmer than Gdańsk this month.
- Only 2 months are warmer in Olsztyn than June.
- Rain is above Olsztyn's usual level, by about 38%.
- June brings early summer to Olsztyn.
Avg high
21°C
70°F
Avg low
11°C
52°F
Rainfall
81 mm
some rain
Humidity
77%
relative
Sky
60%
cloud · often cloudy
Olsztyn weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -1°C / 30°F | -6°C / 21°F | 51 mm | 95% | 88% |
| February | 1°C / 33°F | -5°C / 22°F | 40 mm | 93% | 81% |
| March | 6°C / 43°F | -2°C / 28°F | 40 mm | 85% | 71% |
| April | 13°C / 55°F | 2°C / 36°F | 44 mm | 79% | 60% |
| May | 18°C / 64°F | 7°C / 45°F | 63 mm | 77% | 63% |
| June | 21°C / 70°F | 11°C / 52°F | 81 mm | 77% | 60% |
| July | 23°C / 73°F | 13°C / 56°F | 97 mm | 78% | 68% |
| August | 24°C / 74°F | 13°C / 55°F | 62 mm | 74% | 58% |
| September | 19°C / 66°F | 9°C / 49°F | 59 mm | 78% | 64% |
| October | 13°C / 55°F | 5°C / 40°F | 62 mm | 85% | 71% |
| November | 6°C / 43°F | 1°C / 34°F | 51 mm | 93% | 83% |
| December | 2°C / 35°F | -2°C / 28°F | 55 mm | 95% | 83% |
What to pack for June
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is June a good time to visit Olsztyn?
Compare the months in the chart above to find your ideal window.
Best time to visit Olsztyn →Other Poland cities in June
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Olsztyn weather in June. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/poland/olsztyn/june
<a href="https://weathercompare.eu/weather/poland/olsztyn/june">Olsztyn weather in June</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/poland/olsztyn" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Olsztyn weather in June"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/poland/olsztyn/june">Olsztyn weather in June</a> – WeatherCompare</p>
Olsztyn in June: quick answers
Is June a good time to visit Olsztyn?
June is a reasonable time for Olsztyn: highs around 21°C and about 81 mm of rain, though not one of the three best months.
How warm is Olsztyn in June?
Average highs are about 21°C (70°F) and average lows about 11°C (52°F), based on 10 years of daily data.
Does it rain a lot in Olsztyn in June?
Olsztyn typically gets around 81 mm of rain in June — some rain.
Figures are long-term averages for the area around Olsztyn (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.