Climate and monthly weather forecast
Ashburton, New Zealand


The climate of Ashburton

Nestled in the heart of New Zealand, Ashburton falls under the Marine West Coast climate according to the Köppen climate classification. The town's climate, marked as Cfb, is characteristic of warm summers and a generous amount of rainfall spread evenly throughout the year.

Fluctuations in Ashburton's temperatures and the duration of daylight hours are as predictable as the sunrise. High temperatures range from a mild 10.7°C in the coldest month of July to a pleasant 23.7°C at the peak of summer in January. The cycle of the earth modifies the length of daylight hours in Ashburton, varying from 9 hours in June and July, gradually increasing to reach a sunlit high of 15.4 hours in December.

Rainfall decorates all months in Ashburton with a near-constant presence. Precipitation levels swing gently from 51mm in winter's core in June to the wettest month of August, which sees an average of 66mm of rainfall. Unique in its impartial distribution of rain, Ashburton's weather displays no pronounced wet or dry seasons.

The best time to visit Ashburton

One's plans may best coincide with a visit to Ashburton between December and February, traditionally considered the warmest months. The average high temperatures during this phase lie in the range of 22°C to 23.7°C while rainfall remains a moderate 56mm to 58mm. Holidaymakers inclined to long sunny days would rejoice - daylight hours expand from 14.7 hours in November, peak at 15.4 hours in December, before contracting to 13.3 hours in February.

The worst time to visit Ashburton

Visiting Ashburton in the cold and damp months from June to August may prove less appealing to the outdoor enthusiast. Average high temperatures during this time hover from 10.7°C to 12.3°C, whilst average lows can venture down to 0.5°C in July. The windows of daylight become shorter, from 9.3 hours in August down to a narrow 9 hours in June and July. Additionally, rainfall precipitates a high of 66mm in August, providing an advantage to those favoring cozy indoor activities.

Spring weather in Ashburton

The annual rebirth of Spring in Ashburton, marked by September through November, initiates a noted reprise in temperature from the preceding chilly winter. The average highs progressively warm each month from 15.2°C in September to 19.9°C by November. September receives 44mm of rainfall, increasing slightly to 58mm by November. Daylight becomes more abundant, expanding from 11.8 hours in September to reach 14.7 hours in November.

Summer weather in Ashburton

Summer in Ashburton, spanning from December to February, delivers on the promise of warm days, cooler nights, and an abundant gift of daylight hours. The average high temperatures gently recede from their December peak of 23.7°C, to pleasant conditions of 23°C in January and 21°C in February. Rainfall during these months somewhat increases from 56mm in December to 63mm in February. December gifts the most daylight, boasting a generous 15.4 hours.

Autumn weather in Ashburton

The season of mellow fruitfulness seizes Ashburton from March till May. The average high temperatures start dropping from 17.9°C in March, to a cool 13.9°C in May. The rainfall rises over the autumnal months, beginning with 66mm in March and reaching 62mm in May. Daylight hours diminish from 10.9 hours in March, to a humble 9.6 hours by the end of May.

Winter weather in Ashburton

Winter weaves its cold spell on Ashburton from June to August. Average high temperatures slump to 11.2°C in June, falling further to the year's low of 10.7°C in July before rising slightly to 12.3°C in August. Notably, average low temperatures touch down to near freezing levels of 0.5°C in July. Although June receives the least rainfall of 51mm, August tops the year with 66mm. The scarce daylight huddles at 9 hours in June and July, rising to 9.3 hours by August.

Weather in January

The New Year in Ashburton, New Zealand, brings weather conditions marked by warmth and a lingering sun. With highs of 23.7°C, January claims the title of the hottest month. The town experiences less sunlight in the preceding December and experiences even less by the time February rolls in. Weather in January »

Weather in February

February in Ashburton experiences the downward shift of the weather curve set by January. Despite the marginal decrease from 23.7°C to 23°C, it still ranks among the hotter months. The decrease in sunlight hours signals the approaching end of summer. Weather in February »

Weather in March

As autumn edges in, March in Ashburton sees further lowering of temperatures with a pronounced shift from February. The rainfall moves on an upward trajectory, curving from 54mm in February to 63mm in March. This marks the beginning of a phase where residents must adapt to reduced sunlight and progressively colder conditions. Weather in March »

Weather in April

With April, Ashburton's weather assumes definite autumnal characteristics. The month sees a considerable drop in temperature to 17.9°C bringing with it a notable chill in the air. The rainfall remains fairly constant, with only a marginal increase from the previous month. Weather in April »

Weather in May

May's arrival in Ashburton heralds colder temperatures and the onset of early winter. The temperature reduction is felt more evidently than in April. The daylight period contracts further, leading to longer and colder nights. Residents anticipate more rainfall, despite no appreciable increase from the preceding month. Weather in May »

Weather in June

June in Ashburton conforms to the classic expectations of winter. The bar of daylight hours drops to its lowest point at 9 hours, matching the lower temperatures. Without any significant rise in rainfall, the overall weather conditions stabilize into a cold climate. Weather in June »

Weather in July

July remains entwined in the throes of winter in Ashburton. The downward temperature trend reaches a low point, with the coldest month averaging around 10.7°C. The majority of the daylight hours have retreated, with only a slight improvement from June. Weather in July »

Weather in August

August in Ashburton marks the end of winter and the early indication of spring. The temperature sees a slight rise while the rain increases compared to July. Daylight hours take on an upward ascent, though still significantly fewer than in the summer months. Weather in August »

Weather in September

September in Ashburton witnesses the full force of spring. A marked increase in temperatures heralds the arrival of more pleasant weather. The rainfall drops sharply from 66mm from the preceding August to 44mm setting the stage for drier conditions. Weather in September »

Weather in October

Ashburton's October bears the full bloom of spring, teetering on the edge of summer. The town sees a considerable boost in temperature compared to September, foreshadowing the coming warmth. Rainfall remains similar to September's, ensuring a balance between hot and wet conditions. Weather in October »

Weather in November

With November's arrival, Ashburton comes quite close to summer-like conditions. The temperature continues to rise. Despite being overshadowed by January in terms of maximum temperature, it comes close in terms of warmth. However, the rainfall aligns more with the figures of the colder months, unlike the decreasing trend witnessed in several summertime months. Weather in November »

Weather in December

December in Ashburton showcases typical summer weather. The temperature wedge between November and December is small. With the highest sunlight hours of 15.4, December stands as the sunniest month of the year. On the other hand, rainfall patterns fall in line with those of the colder months, serving as an anomaly in an otherwise summer-dominated month. Weather in December »


What part of the year is the hottest in Ashburton?

The warmest month in Ashburton, New Zealand, is January, with an average high-temperature of 23.7°C and an average low-temperature of 11.1°C.

How much does it rain in Ashburton?

Throughout the year, 696mm of rain is accumulated.

When is Daylight Saving Time (DST) in Ashburton?

On Sunday, 02. April 2023, at 3:00 am, Daylight Saving Time ends in Ashburton, New Zealand, and the time zone changes from NZDT to NZST. The next Daylight Saving Time starts on Sunday, 24. September 2023, at 2:00 am, and the time zone reverts from NZST to NZDT.

What is the month with the shortest days in Ashburton?

With an average of 9h and 0min of daylight, June has the shortest days of the year in Ashburton.

What part of the year is the coldest in Ashburton?

With its average high temperature of 10.7°C and a low of 0.5°C, July is regarded as the coldest month in Ashburton, New Zealand.

What is the rainiest month in Ashburton?

August is the month with the most rainfall, with 66mm of accumulated precipitation.

What is the driest month in Ashburton?

The month with the least rainfall is September, when 44mm of precipitation is typically aggregated.

When are the longest days in Ashburton?

With an average of 15h and 24min of daylight, December has the longest days of the year.

Average rainfall
Ashburton, New Zealand

Average rainfall - Ashburton, New Zealand

The wettest month (with the highest rainfall) is August (66.1mm).
The driest month (with the least rainfall) is September (43.7mm).


Average daylight
Ashburton, New Zealand

Average daylight - Ashburton, New Zealand

The month with the longest days is December (Average daylight: 15h and 24min).
The month with the shortest days is June (Average daylight: 9h and 0min).


Ashburton, New Zealand

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