Climate Insights for Nelson Airport

The climate in Nelson Airport is cool. The average annual temperature is 7°C and approximately 436mm of precipitation falls per year. June is the wettest month, receiving around 82mm of rainfall. Nelson Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -12°C. Snowfall occurs from January to December, with around 104cm accumulating over the season.

Nelson Airport has a wide annual temperature range, spanning 43°C from the coldest to warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 23°C. The coldest month is February, when overnight lows fall to -12°C and the daily average is -8°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 9°C shift in average temperatures.

Nelson Airport is a relatively dry area, receiving approximately 436mm of precipitation annually, which averages out to around 36mm per month. The wettest month is June, averaging 82mm of rainfall. September and May also tend to see above-average precipitation. The driest month is January, with just 15mm. That's 66mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 104cm accumulating over the season. February typically sees the most snow at around 26cm.

Nelson Airport is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Nelson Airport, which began on June 21, 2026. Nelson Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 31°C, while the coldest stretch bottoms out in February near -12°C. Autumn is next, beginning on September 23, 2026 — 80 days from now.

The best time to visit Nelson Airport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 46mm per month. By contrast, February can be quite cold with temperatures dropping to -12°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Nelson Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.