Wairau Valley Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Wairau Valley.

Climate overview of Wairau Valley

Wairau Valley, Marlborough Sounds, New Zealand, experiences significant temperature variation throughout the year. Summers bring daytime highs of 21°C (70°F) in January, while winters cool to 10°C (50°F) in July.

The city has a wet climate, receiving around 1360 mm (54 in) of rain/snowfall per year. Despite the high annual total, it has pleasant summers and cold winters. October is the wettest month. The most sunshine falls in January, with an average of 8.9 hours of daily sunshine.

Wairau Valley Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Wairau Valley - and find the best time to visit.

Monthly Temperature in Wairau Valley

Depending on the time of the year, temperatures range from pleasant to chilly in Wairau Valley. On average, daytime temperatures range from a pleasant 21°C (70°F) in January to a chilly 10°C (50°F) in July.

Nighttime temperatures range from 10°C (50°F) in January to 0°C (32°F) in July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Wairau Valley

Wairau Valley has a relatively rain/snowy climate with high precipitation levels, averaging 1360 mm (54 in) of rain/snowfall annually. The wettest period in Wairau Valley occurs in October, which receives around 138 mm (5.4 in) of precipitation. During the driest month, March, Wairau Valley experiences moderate rainfall, totaling 92 mm (3.6 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Wairau Valley Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Wairau Valley

In Wairau Valley, summer days are longer and more sunny, with daily sunshine hours peaking at 8.9 hours in January. As the darker season arrives, the brightness of the sun becomes less. June sees a soft sun for only 4.8 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Nelson, New Zealand (38 KM, 23 Miles).

Daily hours of sunshine

Data from: Nelson, New Zealand (38 KM, 23 Miles).

Humidity in Wairau Valley by Month

Best Time to Visit Wairau Valley

For comfortable weather, consider visiting Wairau Valley in February. Conditions are usually least favourable in May, June, July, August and September.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: February
  • Warmest weather: January and February
  • Most sunshine: January
  • Seasonal pattern: Pleasant summers and cold winters
  • Coldest conditions: July, with freezing nights around 0°C (32°F).

Frequently asked questions about the climate in Wairau Valley

What is the best time to visit Wairau Valley?

February typically offers the most optimal weather in Wairau Valley. In contrast, May, June, July, August and September tend to have less optimal conditions. Wairau Valley has pleasant summers and cold winters.

What temperatures can I expect in Wairau Valley?

Daytime highs range from 10°C (50°F) in July to 21°C (70°F) in January. Nighttime lows range from 0°C (32°F) to 10°C (50°F). Temperatures vary considerably through the year.

How much rain does Wairau Valley get?

Annual rainfall is around 1360 mm (54 in). October is the wettest month with 138 mm (5.4 in), while March is the driest with 92 mm (3.6 in).

How sunny is Wairau Valley?

Wairau Valley receives around 2,502 hours of sunshine per year. January is the sunniest month with 268 hours, while June is the cloudiest with just 144 hours. Overall, Wairau Valley enjoys abundant sunshine.

Wairau Valley 3-Day Forecast

Wairau Valley on the map

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