Oster, Ukraine in May has mild conditions, with highs averaging 19.3°C (67°F) and noticeably cooler mornings. Rain falls on about 10 days this month.
This month falls at the end of Spring.
Daily highs in May gradually rise from around 19°C (66°F) at the start to 22°C (72°F) by month's end.
Rainfall is heaviest during the last third of the month, while the first third tends to be drier.
Expect around 11.8h of sunshine at the start of May, decreasing to 11.3h by the end.
The warmest days tend to fall around the 31th, averaging 22.2°C (72°F).