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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Current Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Blenheim weather is defined by abundant sunshine and low rainfall, making it one of New Zealand’s driest and sunniest towns. The live forecast above shows current conditions, but the broader pattern is clear: warm, dry summers and cool, crisp winters with reliable sunshine throughout the year.
What makes Blenheim’s climate distinctive?
Blenheim sits in the rain shadow of the Richmond Range and Kaikōura Ranges, which block much of the moisture from prevailing westerly winds. The result is a climate closer to that of inland Canterbury than coastal Marlborough — roughly 650 mm of rain annually and around 2,400 hours of sunshine. Summers are warm with average highs near 24°C; winters are cool with overnight lows often falling below 2°C and morning frosts common. If you are checking weather in Blenheim today and tomorrow, expect clear skies most of the year, though afternoon sea breezes can cool the town in summer.
How to plan around Blenheim weather
For the most up-to-date outlook, check the weather in Blenheim 7 days or use the live forecast above. If you need finer detail, the weather in Blenheim hourly view helps with outdoor plans in wine country. For a longer view, the weather in Blenheim 14 days and weather in Blenheim New Zealand 10 days forecasts give a reliable sense of approaching fronts. The official Blenheim weather Metservice feed is the authoritative source for warnings. Travellers from Australia can compare conditions with Australia weather hub or see how today stacks up against Melbourne Weather.
What is the best time to visit Blenheim?
Late summer (February–March) offers the warmest, most settled weather for exploring the Marlborough wine region. Spring (October–November) is also pleasant, with fewer crowds and blossoming vineyards.
Does Blenheim get much rain?
No — Blenheim is one of New Zealand’s driest towns, averaging only about 650 mm of rain per year. Most rain falls in winter and early spring, but heavy downpours are uncommon.
How cold does Blenheim get in winter?
Winter days are cool but not severe, with highs around 12–13°C. Overnight lows frequently drop below 2°C, and frost is common on calm, clear mornings from June through August.