Monthly climate guide
Mykolaiv weather in September
September in Mykolaiv is typically warm, with average daytime highs around 25°C (78°F) and night-time lows near 13°C (56°F). The month usually brings about 25 mm of rain (fairly dry) and is a mix of sun and cloud. Daytime highs are 6°C cooler than August and 9°C warmer than October.
What stands out in September
- Expect a big gap between day and night — about 12°C.
- Temperatures are falling — expect highs around 9°C lower by October.
- Mykolaiv is usually about 3°C warmer than Kremenchuk, 260 km away, in September.
- Seasonally, September counts as early autumn in Mykolaiv.
Avg high
25°C
78°F
Avg low
13°C
56°F
Rainfall
25 mm
fairly dry
Humidity
56%
relative
Sky
43%
cloud · a mix of sun and cloud
Mykolaiv weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 1°C / 33°F | -6°C / 21°F | 44 mm | 90% | 84% |
| February | 4°C / 39°F | -4°C / 24°F | 28 mm | 85% | 80% |
| March | 10°C / 50°F | 0°C / 31°F | 29 mm | 76% | 65% |
| April | 17°C / 63°F | 5°C / 42°F | 35 mm | 67% | 54% |
| May | 24°C / 75°F | 12°C / 54°F | 45 mm | 64% | 51% |
| June | 29°C / 83°F | 17°C / 62°F | 56 mm | 57% | 48% |
| July | 31°C / 88°F | 19°C / 66°F | 42 mm | 52% | 40% |
| August | 32°C / 89°F | 18°C / 65°F | 19 mm | 47% | 33% |
| September | 25°C / 78°F | 13°C / 56°F | 25 mm | 56% | 43% |
| October | 17°C / 62°F | 6°C / 43°F | 35 mm | 71% | 62% |
| November | 9°C / 48°F | 1°C / 34°F | 27 mm | 82% | 76% |
| December | 4°C / 39°F | -2°C / 28°F | 32 mm | 88% | 81% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
Is September a good time to visit Mykolaiv?
Compare the months in the chart above to find your ideal window.
Best time to visit Mykolaiv →Other Ukraine cities in September
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Mykolaiv weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/ukraine/mykolaiv/september
<a href="https://weathercompare.eu/weather/ukraine/mykolaiv/september">Mykolaiv weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/ukraine/mykolaiv" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Mykolaiv weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/ukraine/mykolaiv/september">Mykolaiv weather in September</a> – WeatherCompare</p>
Mykolaiv in September: quick answers
Is September a good time to visit Mykolaiv?
Yes. September is one of the best months for Mykolaiv, with highs around 25°C and about 25 mm of rain.
How warm is Mykolaiv in September?
Average highs are about 25°C (78°F) and average lows about 13°C (56°F), based on 10 years of daily data.
Does it rain a lot in Mykolaiv in September?
Mykolaiv typically gets around 25 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Mykolaiv (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.