Dunedin Weather in December

Dunedin in December sees moderate temperatures, with highs around 18°C (64°F) and overnight lows of 9°C (48°F). Rainfall is at its peak this month, around 118 mm (4.6 in) on average, so waterproofs are essential.

Rainfall in Dunedin in December

Being the wettest month, having an umbrella on standby can help you avoid getting caught in the rain. Historically, December sees about 15 days of rain, with a monthly average of 118 mm (4.6 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Dunedin in December

Daytime highs in Dunedin in December reach 18°C (64°F), with nights around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Dunedin in December

The area experiences a moderate amount of sunshine, with approximately 182 hours of sunlight expected. This means a decent mix of sun and overcast.

Wind Speed in Dunedin in December

December has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

Average water temperature in December

The water sits at 12°C (54°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. February and March typically offer the best weather for Dunedin.

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For a detailed overview over the year and the best time to visit New Zealand, check out our Dunedin's climate page.

Dunedin Temperature in December

Min Temperature 9°C (48°F)  

Max Temperature 18°C (64°F)  

Water Temperature 12°C (54°F)  

Chance of Rain 51%  

Precipitation 118 mm (4.6 in)  

Rainy days 15 days  

Humidity 73%  

Windspeed 3 m/s (6 knots)  

Sunshine 182 hours  

Percentage Sunshine 39%  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Dunedin typically stay consistent throughout December, with daily highs averaging around 18°C (64°F). Nights are cool, with lows around 10°C (50°F).

Average temperatures in December

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Historical weather for Dunedin in December

Browse day-by-day weather records for Dunedin spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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Dunedin historical weather extremes in December

Based on weather observations in Dunedin between 2003 and 2025, these are the recorded extremes during December.

• The hottest December day on record in Dunedin reached 30°C (86°F) (December 28, 2008).
• On December 18, 2004, Dunedin saw its coldest December day with temperatures maxing out at 9°C (48°F).
• Nighttime temperatures dropped to 0°C (32°F) on December 4, 2009, marking the coldest December night on record.
• The heaviest December precipitation occurred on December 28, 2010, when 55 mm (2.2 in) of precipitation fell.

What to Wear in Dunedin in December

For Dunedin in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 12°C (54°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Dunedin in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit New Zealand, check out our Dunedin's climate page.

More climate data for Dunedin

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Dunedin climate overview or explore weather in New Zealand.