If you want to experience Invercargill at its best, you’ll need to plan around the weather. This southern New Zealand city stays cool and damp most of the year, but there are definitely times when the conditions feel much more inviting.
The most comfortable time to visit Invercargill is during the summer months of December through February, when temperatures are mild and the days stretch out longer.
During summer, you’ll see average highs around 18°C. Rainfall is lighter compared to the rest of the year, which makes it easier to get outside and enjoy the coast, parks, or even just a stroll without worrying about cold winds or heavy rain.
Outside of summer, the weather changes fast. March and April start to cool down and bring more rain, while June through August often feel cold, damp, and pretty windy.
Knowing these seasonal patterns makes it easier to pick the right time for your trip and get the most out of your Invercargill visit.
Best Time to Visit Invercargill for Ideal Weather
You’ll find the most comfortable weather in Invercargill during summer, when temperatures stay mild and daylight lasts long into the evening. Rain still falls, but it’s generally more pleasant than the colder, wetter winter months.
Overview of the Best Months
The best time to visit Invercargill for ideal weather is from December through February. During these months, average daytime highs reach 16–19°C (61–66°F), and nights stay cool at 9–10°C (48–50°F).
You’ll get longer days, which means more time to explore. Sunshine pops out more often than in winter, even though rain still makes a regular appearance.
On average, expect about 12–17 days with measurable rain each month. Showers don’t usually last long, so you can often wait them out.
Late November and early March can work well too. These shoulder months are a bit cooler, but you’ll run into fewer crowds if you prefer things quieter.
Weather Highlights During Peak Season
Invercargill’s summer weather is cooler than many other parts of New Zealand, but it’s still the most reliable time for outdoor fun. Mild afternoons and comfortable evenings are the norm, and temperatures rarely go above 20°C (68°F).
Rainfall stays moderate, ranging from 64 mm in January to 79 mm in February. Wet days happen, but heavy storms are rare, and most showers clear up quickly.
Wind never really disappears in Invercargill, but summer breezes sting less than winter gales. You’ll still want to pack a light jacket, since weather can shift fast.
The mix of mild temperatures and steady daylight makes this the best season for sightseeing, beach walks, and day trips.
Tourist Seasons and Visitor Trends
Tourism in Invercargill follows the weather closely. The busiest time is December to February, when both locals and travelers from abroad show up for the warmest weather.
Accommodation prices might rise a bit, but you won’t see the same heavy crowds as in bigger cities.
The shoulder months of November and March draw visitors who want decent weather and a quieter experience. Temperatures dip a few degrees, but it’s still comfortable.
Winter, from June to August, is the least popular time. Days get short, temperatures hover around 4–10°C (39–50°F), and rain picks up. Visitor numbers drop, and while that means lower costs, the weather isn’t ideal for outdoor adventures.
Monthly Weather Patterns in Invercargill
You’ll notice steady rainfall all year and only small shifts in temperature between seasons. Summers stay mild, winters get cold and damp, and spring and autumn bring frequent rain with occasional dry breaks.
Summer Weather (December to February)
Summer in Invercargill feels cooler than in much of New Zealand. Daytime average temperatures hover around 16–18°C (61–64°F), and nights drop to about 9–10°C (48–50°F).
You won’t get hot, dry weather here, but it’s usually comfortable enough for outdoor activities.
Rain is common, with 64–79 mm of precipitation per month spread over half the days. Still, you’ll see more sunshine than in other seasons, which means longer daylight for exploring.
Humidity stays moderate, and winds often sweep through the region. These breezes can make the air feel cooler, so a light jacket comes in handy, even in summer.
Autumn Weather (March to May)
Autumn brings cooler air and more unsettled days. In March, daytime highs average 16°C (61°F). By May, they drop to about 12°C (54°F).
Nights cool off steadily, hitting 7°C (45°F) by late autumn.
Rain picks up, especially in March, which can see over 150 mm of precipitation. Showers and cloudy skies are common, and dry days are pretty scarce.
April and May still get plenty of rain, though not quite as much as March.
Expect strong winds and damp weather, which can limit your outdoor plans. On the bright side, you might find fewer tourists, so local spots feel a bit more relaxed.
Winter Weather (June to August)
Winter is the coldest and toughest season for travel. Daytime highs stay around 9–10°C (48–50°F), and nights fall to 4°C (39°F).
Frosts are possible, and sometimes you’ll see a bit of snow, but it’s usually light and melts quickly.
Rainfall holds steady, with 67–100 mm per month. Wet days outnumber dry ones, and clouds often hang around.
Winds remain strong, making it feel colder than the numbers suggest.
You’ll want warm, layered clothes and waterproof gear. Outdoor activities are limited, but winter does offer a quieter city if you like having space to yourself.
Spring Weather (September to November)
Spring slowly brings warmer temperatures, but also some of the wettest months. September averages 11°C (52°F) during the day, and by November it rises to 14°C (57°F).
Nights stay cool, with lows near 5–7°C (41–45°F).
September sees about 144 mm of rain, but by November, it drops to around 77 mm. Showers happen often, but you’ll also get more dry days than in winter.
Spring winds blow strong, which makes things feel brisk. Later in spring, longer daylight and milder temps create better chances for travel.
This season often marks the shift toward more favorable weather for being outdoors.
Temperature Trends Throughout the Year
Invercargill has a cool oceanic climate with mild summers and chilly winters. Temperatures don’t swing wildly, but you’ll notice steady seasonal changes that affect how warm or cold it feels.
Average Highs and Lows by Month
Daytime highs in Invercargill range from about 19°C (66°F) in January to around 11°C (52°F) in July.
Nights are cooler, with lows near 11°C (52°F) in summer and dipping to 3°C (37°F) in winter.
Here’s a table with average temperatures by month:
Month | Avg High °C | Avg Low °C |
---|---|---|
Jan | 19 | 11 |
Feb | 19 | 11 |
Mar | 17 | 9 |
Apr | 14 | 7 |
May | 12 | 5 |
Jun | 11 | 3 |
Jul | 11 | 3 |
Aug | 12 | 4 |
Sep | 13 | 5 |
Oct | 15 | 7 |
Nov | 16 | 9 |
Dec | 18 | 10 |
You’ll want to pack layers any time of year, since nights cool off even in summer.
Seasonal Temperature Variations
Summer (December–February) brings the warmest weather, with highs near 18–19°C. It’s not hot, but it’s definitely more comfortable for being outside.
Nights stay cool, so a light jacket is a smart choice.
Autumn (March–May) cools down gradually, with highs sliding from 17°C in March to 12°C in May. Nights get colder, too.
Winter (June–August) is the coldest stretch. Highs average 11–12°C, and lows sit around 3–4°C. Frosts happen, but snow in town is rare.
Spring (September–November) warms up slowly, with highs rising from 13°C in September to 16°C in November. Nights stay cool until late spring, when it finally feels nicer to get outside.
These changes are steady and not too dramatic, so Invercargill’s weather is pretty predictable compared to places farther inland.
Rainfall and Precipitation in Invercargill
Invercargill gets steady rain all year, with no real dry season. You should expect frequent wet days no matter when you visit, though the monthly totals do change a bit.
Monthly Rainfall Overview
Rainfall in Invercargill averages about 1,150 mm (45 in) per year, spread over roughly 160 days. That means rain falls on nearly half the days in a typical year.
Here’s a look at the monthly averages:
Month | Rain (mm) | Rainy Days |
---|---|---|
January | 115 | 13 |
February | 85 | 10 |
March | 95 | 12 |
April | 95 | 12 |
May | 115 | 15 |
June | 105 | 16 |
July | 85 | 14 |
August | 75 | 13 |
September | 85 | 13 |
October | 95 | 14 |
November | 90 | 13 |
December | 105 | 14 |
Rain usually comes in short bursts or steady showers, and wind often tags along. Long dry spells are rare, so waterproof gear is always a good idea.
Wettest and Driest Months
The wettest months are usually January and May, each with about 115 mm of rain. May also brings the most rainy days, averaging 15.
August is the driest month, with about 75 mm of rain over 13 days. It’s still pretty wet, though, so you shouldn’t expect sunshine all week.
Late spring and early summer, like November and December, have moderate rainfall. These months give you long days and manageable rain, which is great for visiting.
Even in the driest months, Invercargill’s weather can surprise you. It pays to be ready for rain at any time.
Snowfall and Winter Conditions
Invercargill has cool winters, lots of frosts, steady rain, and short days. Snow almost never settles in the city, but if you’re traveling around Southland, you might run into it.
Frequency of Snow in Invercargill
You probably won’t see much snow in Invercargill itself. The city’s temperate oceanic climate keeps winter temperatures between 4°C (39°F) and 10°C (50°F), which is usually too warm for snow to stick around.
Instead, you’ll run into frosty mornings, icy roads, and damp weather from all the rain. Snow does fall sometimes, but it melts fast and doesn’t really disrupt daily life.
If you want a better shot at snow, head inland or toward the Fiordland ranges. Higher elevations and colder air make snow more common there.
Ski fields in Central Otago, about three to four hours away, offer reliable snow during winter.
Invercargill itself isn’t a snow destination, but the surrounding region gives you access to places with much harsher winter conditions.
Impact of Snow on Travel
Snow doesn’t show up often in Invercargill, so it rarely blocks roads or messes with flights. Instead, frost, ice, and heavy rain end up causing the real headaches for drivers, making roads pretty slippery.
Watch out for black ice on rural roads early in the morning. Even when it doesn’t snow, frost can make things just as risky underfoot.
Bring warm clothes and give yourself extra time to get places, just in case.
If you’re heading out of the city, especially into higher ground, snow sometimes covers mountain passes and blocks access to certain spots. Always check the MetService forecast before you hit the road for longer trips.
Invercargill’s airport almost never shuts down because of snow. But winter storms, especially with strong southerly winds, can still delay flights. It helps to keep your plans flexible so you can roll with any changes.
Other Weather Factors to Consider
The weather here isn’t just about temperature and rain. Strong winds and the nearby sea shape Invercargill’s climate, too. Sometimes, these conditions make it less comfortable outdoors or change what you can actually do during your stay.
Wind Speed and Windy Days
Thanks to its spot near the Southern Ocean, Invercargill ranks as one of the windiest cities in New Zealand. Average wind speeds usually sit between 20–30 km/h (12–18 mph), but when southerly systems blow in, gusts can get much stronger.
Honestly, you should count on windy days here, even during summer. The wind often makes it feel colder than the thermometer says, so tossing a light jacket or windbreaker in your bag year-round is a good idea.
Winter winds generally calm down a bit compared to spring, when that “southerly chill” really bites. If you want to get outside for cycling or hiking, check the wind forecast—strong gusts can make things a lot tougher than you’d expect.
Tip: On windy days, try sheltered walking tracks or parks like Queens Park in the city center. It’s a nice break from the bluster.
Sea Temperature and Coastal Climate
The sea around Invercargill stays cool all year. Average sea temperatures usually sit around 11°C (52°F) in winter and only climb to about 14–15°C (57–59°F) in summer.
Even in the warmest months, the water feels pretty chilly unless you wear a wetsuit. The cool sea actually keeps the air temperatures more moderate, so summers feel mild and winters aren’t as harsh as you might expect further inland.
That same coolness means you’ll often see clouds and dampness hanging around. If you like coastal walks or want to spot wildlife on the beaches, you’ll notice the marine climate shapes the whole experience.
Bring layers that can handle cool breezes and damp air—sea spray and mist show up a lot near the shore. If you’re planning to get in the water, it’s best to stick to short sessions or grab proper gear to stay warm in the southern chill.