Winters in Ibaraki are cool and temperate, with January averaging around 6°C. Mornings can be chilly, but temperatures can rise significantly by afternoon. Spring brings gradual warming, with April and May enjoying mild highs often above 20°C. Summers are hot and humid, with June and July frequently reaching highs over 30°C. As autumn approaches, temperatures drop back down to more moderate levels, mirroring the spring trend in reverse.