Last updated: August 31, 2025
In May, Blenheim, New Zealand experiences a blend of mild temperatures and noticeable humidity, creating a unique climate profile. With a maximum temperature reaching 19°C (67°F) and an average of 11°C (52°F), the weather is typically cool, with lows dipping to 1°C (35°F). The month sees 76 mm (3.0 in) of precipitation over 8 days, contributing to the region's lush landscape. Humidity hovers around 84%, adding a touch of dampness to the crisp autumn air. This combination of factors makes May an intriguing time for residents and visitors alike, as the changing season envelops Blenheim in a refreshing ambiance.
As May unfolds in Blenheim, New Zealand, temperatures start to reflect the transition into winter, presenting a noticeable coolness compared to the warmth of summer months. The minimum temperature drops to a chilly 1°C (35°F), while the average hovers around a modest 11°C (52°F). Although daytime highs can still reach 19°C (67°F), the overall trend signals the onset of cooler days. This gradual decline in warmth is in stark contrast to the previous months, where averages lingered in the low to mid-teens. As autumn gives way to winter, May invites residents and visitors to wrap up warmly, embracing the crisp air and the changing colors of the season.
In May, Blenheim experiences a moderate precipitation level of 76 mm (3.0 in), falling on eight days, which reflects a slight decrease compared to the previous month. This represents a continuation of the trend observed throughout the autumn months, with April peaking at 98 mm (3.9 in). Following this pattern, the rainfall ensures the landscape remains lush, even as the region transitions toward winter. As temperatures drop, May's rains are often welcomed after the drier spells earlier in the year, while still aligning closely with the precipitation levels seen in both October and June, creating a consistent rhythm in Blenheim's climate that residents and visitors alike can appreciate.
As May arrives in Blenheim, New Zealand, residents experience a noticeable increase in humidity, climbing to 84%. This rise marks a defining shift from the earlier months, reflecting the transition into the cooler season where dampness becomes more pronounced. Following April's relative humidity of 80%, May sets the stage for the winter months ahead, which often see humidity levels peaking at 86% in June and July. Interestingly, although May carries the highest humidity level for this month in the year, it still maintains a remarkably stable trend alongside the summer months, which consistently hover around 79%. This gradual increase underscores the dynamic weather patterns that residents can expect as autumn unfolds into winter.
In May, Blenheim, New Zealand, experiences a moderate UV Index of 4, allowing for a relatively safe outdoor experience with a burn time of approximately 30 minutes. This marks a noticeable transition from the extreme levels recorded in the peak summer months of January and February, where the UV Index soared to 13. Following this trend, the UV Index begins to decrease gradually as winter approaches, with June and July showing a low UV Index of 2. As the month progresses, residents and visitors are encouraged to embrace the milder sun exposure while remaining aware of changing conditions. For more detailed information, check out the Blenheim UV Index.
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May in Blenheim, New Zealand, marks a gentle transition as the sunniest months begin to wane. With 220 hours of sunshine, May maintains a bright charm, although it noticeably trails the earlier months of the year. Following the sun-drenched heights of January and February, which boast over 300 hours each, the sunny spells gradually decline, dropping to June's cooler 181 hours. This trend reflects a natural ebb as winter approaches, yet the warmth of Blenheim's sunshine lingers, offering glimpses of light and warmth even as the days shorten. While May might not shine as brightly as its summer predecessors, it still delights with its soft, golden rays—a perfect prelude to winter's embrace.
In Blenheim, New Zealand, the month of May showcases a 48% chance of sunny weather, making it one of the more promising months as autumn progresses. While this figure is slightly below the year's earlier peaks in January and April, it still presents a favorable comparison to the approaching winter months. The trend reveals a gradual decline in sunshine probability from summer's vibrant peak, peaking at 55% in January, before stabilizing around the mid-40s through the winter months. As May arrives, residents can enjoy a balance of sunshine amidst the lush, autumnal scenery, maintaining a spirit of optimism for beautiful outdoor days.
As the months progress in Blenheim, New Zealand, the daylight duration reveals distinct seasonal patterns that reflect the shifting rhythms of nature. In January, the sun graces the skies for a generous 14 hours, allowing for vibrant summer days. However, as we transition into February and March, daylight gradually decreases to 13 and 12 hours, respectively, heralding the end of summer bliss. By April, the daylight dips further to 10 hours, signaling the onset of autumn. In May, daylight continues to contract, reaching 9 hours, a trend that persists through June and July. Yet, as winter gives way to early spring in August, daylight subtly begins to lengthen again, returning to 10 hours. This gradual increase continues through September and October, culminating once more in the warmer months, where November and December reward residents with 14 and 15 hours of daylight, respectively—a cycle that beautifully captures the essence of Blenheim's climate throughout the year.
In Blenheim, New Zealand, the winds in May present a gentle yet invigorating breath of spring, with an average wind speed of 4.1 m/s (9 mph). As the transition from autumn to winter unfolds, May experiences a slight uptick in wind compared to the previous months, continuing the trend of relatively stable wind patterns since January. Interestingly, while the months of April and June see even calmer winds at 3.9 m/s and 4.0 m/s respectively, May holds its own as a brisk interlude before the chillier months set in. This subtle yet noticeable shift encourages both locals and visitors to embrace the refreshing breezes that characterize this vibrant season in the Marlborough region.
Weather in Blenheim varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Blenheim, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in May and January, there are notable differences in temperature and precipitation. May typically experiences cooler conditions, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 19°C (67°F), averaging around 11°C (52°F). It also has higher humidity at 84% and more rainfall, averaging 76 mm (3.0 in) over roughly 8 days. In contrast, January is warmer, with a temperature range from a minimum of 7°C (45°F) to a maximum of 29°C (84°F), an average of 17°C (63°F), and less precipitation at 41 mm (1.6 in) over about 6 days, accompanied by slightly lower humidity at 79%. For more detailed insights into January's climate, you can visit Blenheim weather in January.
In comparing the weather of May and February, we can observe distinct differences in temperature and precipitation patterns. February typically enjoys milder temperatures, with minimums around 8°C (46°F) and maximums reaching up to 28°C (82°F), resulting in an average of 17°C (63°F). In contrast, May is cooler, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 19°C (67°F) and an average of 11°C (52°F). While February has slightly less precipitation at 67 mm (2.6 in) over 6 days, May sees more rainfall at 76 mm (3.0 in) across 8 days, contributing to higher humidity levels of 84% compared to February's 79%. For more details on February's weather, you can check Blenheim weather in February.
In comparing the weather between March and May, March tends to be warmer overall, with average temperatures reaching 15°C (60°F) and highs up to 24°C (76°F), while May experiences cooler temperatures, averaging 11°C (52°F) with maximums at 19°C (67°F). Notably, March has a higher minimum temperature of 7°C (44°F) compared to May’s chilly minimum of 1°C (35°F). Precipitation levels are also slightly lower in March, with 66 mm (2.6 in) recorded over 8 days, whereas May sees a total of 76 mm (3.0 in) over the same number of days. Humidity is relatively high in both months, but May edges out with 84% compared to March's 79%. For a detailed look at March weather, you can check Blenheim weather in March.
May weather is generally cooler than April, with a minimum temperature of 1°C (35°F) compared to April's milder 4°C (39°F). The average temperature in May is 11°C (52°F), which is slightly lower than April's average of 13°C (56°F). Additionally, while both months experience precipitation on 8 days, May sees 76 mm (3.0 inches) of rain, which is less than April's 98 mm (3.9 inches). Humidity levels are slightly higher in May at 84%, compared to April's 80%. For more details on April weather specifically, you can check Blenheim weather in April.
May and June exhibit similar weather patterns, though June tends to be slightly cooler. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). This month experiences approximately 76 mm (3.0 in) of precipitation over 8 days, and humidity levels are around 84%. In contrast, June sees a slight dip in temperatures, with a minimum of 1°C (35°F), an average of 9°C (48°F), and a maximum of 17°C (63°F). Precipitation increases slightly to 77 mm (3.0 in) over 10 days, while humidity rises to 86%. For more details on June weather, check out Blenheim weather in June.
In comparing the weather between May and July, we see notable differences in temperature and precipitation patterns. May experiences milder temperatures with an average of 11°C (52°F) and a maximum of 19°C (67°F), while July sees cooler averages, peaking at 15°C (59°F) and dropping to a maximum of 8°C (47°F). Both months are marked by significant precipitation, but July is slightly wetter, with 97 mm (3.8 in) of rainfall over 12 days compared to May's 76 mm (3.0 in) over 8 days. Humidity remains high in both months, hovering around 84% in May and slightly increasing to 86% in July. For more details, you can check Blenheim weather in July.
May and August present a transition in weather patterns, with both months featuring cool temperatures and significant humidity. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 19°C (67°F), averaging around 11°C (52°F), while August sees slightly lower averages, with minimums at 1°C (34°F), maximums at 18°C (65°F), and overall averages of 9°C (48°F). Precipitation levels are quite similar, with May receiving 76 mm (3.0 in) over 8 days and August accumulating 73 mm (2.9 in) over a slightly longer span of 10 days. Despite these minor differences, both months maintain high humidity levels, hovering around 84% in May and 83% in August. For more details on August weather, you can check Blenheim weather in August.
May and September exhibit similar weather patterns, but there are some notable differences. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). The month sees an average precipitation of 76 mm (3.0 in) over about 8 days, and humidity is relatively high at 84%. Conversely, September experiences slightly cooler temperatures, with a minimum of 1°C (34°F), an average of 10°C (50°F), and a maximum of 18°C (65°F). Precipitation increases to 82 mm (3.2 in) over roughly 10 days, with humidity remaining comparable at 83%. For further details on September's weather, you can check Blenheim weather in September.
May and October present similar weather patterns, with both months featuring comparable average temperatures and precipitation levels. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 19°C (67°F), while October sees slightly warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 20°C (69°F). Both months experience around 76 mm (3.0 in) of rainfall, though October has a few more rainy days, averaging 11 days of precipitation compared to May's 8 days. Humidity levels are also close, with May at 84% and October slightly lower at 82%. For more detailed insights into the October climate, you can check Blenheim weather in October.
In comparing the weather of May and November, we can see distinct differences in temperature and precipitation patterns. May features cooler temperatures, with averages around 11°C (52°F) and maximums reaching only 19°C (67°F). In contrast, November enjoys milder conditions, with average temperatures of 14°C (57°F) and highs up to 24°C (75°F). While both months experience a similar amount of precipitation—with May receiving 76 mm (3.0 in) over 8 days and November slightly higher at 81 mm (3.2 in) over 11 days—November’s humidity is slightly lower at 82% compared to May’s 84%. For a more detailed look at November's climate, you can visit Blenheim weather in November.
May and December present distinct weather patterns, highlighting the transition from early spring to late summer. In May, temperatures range from a cool minimum of 1°C (35°F) to a pleasant maximum of 19°C (67°F), with an average of 11°C (52°F). This month experiences about 76 mm (3.0 in) of precipitation over 8 days, accompanied by a humidity level of 84%. In contrast, December offers warmer weather, with temperatures peaking between 6°C (43°F) and 25°C (77°F), leading to an average of 16°C (61°F). Despite being warmer, December tends to be wetter, with 101 mm (4.0 in) of rainfall spread over 12 days and humidity slightly lower at 81%. For more detailed insights, you can check Blenheim weather in December.
As May blankets Blenheim in a cooler embrace, the transition from the warmth of previous months becomes evident. With temperatures dipping, the crisp air invites cozy layers and warm beverages, contrasting sharply with the milder springs and sultry summers. The increased humidity and notable precipitation, averaging 76 mm over 8 days, signal the approach of winter, making May the month of unexpected rain showers. This shift creates a vibrant landscape, painting the region in lush greens while offering a serene escape from the bustling tourist season. For a comprehensive guide to the climate in this beautiful area, visit Blenheim Climate.