Invercargill Weather

Discover our local weather patterns and unique climate

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Understanding Invercargill’s Weather and Climate: A Comprehensive Guide

Invercargill, the southernmost city of New Zealand, offers a unique climate shaped by its proximity to the Southern Ocean and the dramatic landscapes of the Southland region. Known for its temperate oceanic climate, the city experiences mild temperatures, consistent rainfall, and seasonal variations that make it a fascinating destination for residents and visitors alike. This comprehensive guide explores Invercargill’s weather patterns in detail, offering insights into what to expect in this remarkable city.


Geographic Influence on Invercargill’s Climate

Invercargill’s location at the southern tip of the South Island gives it a climate heavily influenced by the Southern Ocean. The city’s position shields it from extreme temperatures while exposing it to frequent weather systems and winds originating from the Tasman Sea. This maritime influence ensures a relatively stable climate year-round, but it also brings frequent rain and dynamic weather changes.


Temperature Overview

Invercargill is known for its mild temperatures throughout the year, with a narrow range between summer and winter averages.

Average Monthly Temperatures

Month Average High (°C) Average Low (°C)
January 18.9 9.4
February 18.8 9.3
March 17.5 7.8
April 15.1 5.8
May 12.6 4.0
June 10.1 2.0
July 9.7 1.2
August 11.1 2.2
September 13.1 3.9
October 14.4 5.5
November 15.8 6.8
December 17.9 8.4

Temperature Extremes

  • Highest Recorded Temperature: 33.8°C on 2 January 1948.
  • Lowest Recorded Temperature: -6.3°C in June 1995.

Invercargill’s mild summer days and cool winters create an inviting climate for outdoor enthusiasts year-round.


Rainfall Patterns

Rain is a consistent feature of Invercargill’s climate, contributing to the lush greenery of the Southland region.

Average Monthly Rainfall

Month Rainfall (mm)
January 128
February 85
March 95
April 95
May 115
June 105
July 83
August 86
September  95
October 127
November 115
December 95

Rainy Days

  • Annual Average: Approximately 161 days of measurable precipitation.

Rainfall is evenly distributed across the year, although the winter months tend to see fewer rainy days compared to spring and summer.


Sunshine Hours

Invercargill’s southern latitude means fewer sunshine hours compared to other New Zealand cities, but its brighter days are well worth the wait.

Average Monthly Sunshine Hours

Month Sunshine Hours
January 192
February 168
March 124
April 120
May 93
June 75
July 93
August 124
September    120
October 155
November 180
December 186
  • Annual Total Sunshine Hours: Approximately 1,680 hours.
  • Sunniest Month: January, with an average of 6 hours per day.

Wind Conditions

The westerly winds, also known as the “Roaring Forties,” are a defining feature of Invercargill’s climate.

Key Wind Statistics

  • Average Wind Speed: 19 km/h (12 mph) annually.
  • Strongest Winds: The city has recorded gusts up to 133 km/h (83 mph) during major storms.

The consistent breeze keeps temperatures comfortable during summer and adds to the region’s dynamic weather.


Seasonal Variations

Summer (December to February)

  • Temperature: Highs around 18.9°C; lows around 9.4°C.
  • Rainfall: Moderate, with January being one of the wetter months.
  • Sunshine: Peak hours, averaging 6 per day.

Autumn (March to May)

  • Temperature: Cooling trend, with May averaging highs of 12.6°C.
  • Rainfall: Consistent, with autumn often seeing vibrant foliage.
  • Sunshine: Gradual decline to 3-4 hours per day in May.

Winter (June to August)

  • Temperature: Coldest period, with July averaging highs of 9.7°C and lows of 1.2°C.
  • Rainfall: Lower compared to other seasons, but frosty mornings are common.
  • Sunshine: Minimal, with 2-3 hours per day.

Spring (September to November)

  • Temperature: Warming trend, with November averaging highs of 15.8°C.
  • Rainfall: Increasing, particularly in October.
  • Sunshine: Steady improvement, with November averaging 6 hours per day.

Snowfall and Frost

Snowfall is rare but not unheard of in Invercargill, with light dustings occurring in winter.

  • Snow Days: Approximately 2 per year on average.
  • Frost: Clear winter nights frequently lead to frost formation, particularly in June and July.

Sea Temperatures

Invercargill’s coastal location ensures consistently cool sea temperatures.

Month Sea Temperature (°C)
January 13
February 14
March 13
April 12
May 11
June 9
July 8
August 8
September  9
October 10
November 11
December 12

The waters around Invercargill are ideal for hardy swimmers, surfers, and marine wildlife enthusiasts.


Tips for Visiting Invercargill

  1. Pack Layers: Invercargill’s weather can change rapidly, so bring clothing for all conditions.
  2. Check Forecasts: Local weather forecasts are essential for planning outdoor activities.
  3. Explore Year-Round: Each season offers its own unique charm, from summer hikes to winter frosts.

Conclusion

Invercargill’s weather and climate are as unique as the city itself. From its mild summers to its crisp winters, the city’s temperate oceanic climate ensures there’s something to enjoy year-round. Whether you’re exploring its scenic walking tracks, enjoying its vibrant gardens, or simply soaking in its laid-back charm, understanding Invercargill’s weather helps you make the most of your visit.

Pack your sense of adventure and embrace the dynamic beauty of Invercargill’s climate—you won’t be disappointed!