Roslyn, in Manawatu-Wanganui, New Zealand, is home to roughly 2,700 people in the New Zealand time zone at 40.3°S latitude.
In 2025, Roslyn recorded an average annual temperature of 56°F. The hottest temperatures reached 81°F in January; the coolest were 29°F in July. Total precipitation for the year was 52 inches, with the wettest month being October.
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