December 20 is generally a great time to visit Christchurch. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 20°C weather. As it's peak season for Christchurch, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Christchurch
Currency
NZD
$ New Zealand dollar
Language
English
+2 more
Driving
Left side
Safety
Very High Safety
GPI: 1.269
Christchurch Weather Forecast for December 20
"Mild & Comfortable. Expect average highs of 19.5°C. 26% chance of rain."
What to Wear in Christchurch in December
Based on historical data for December 20, Christchurch typically experiences temperatures between 11.7°C and 19.5°C. We recommend packing light jacket, long pants to stay comfortable. With a 26% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Christchurch
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.5°C
Daytime Peak
Average Low
11.7°C
Nighttime Low
Feels Like
19.5°C
🌤️ Feels accurate
Rain Chance
26%
Avg 1.6mm if it rains
Cloud Cover
64%
Overcast
Pressure
1010.1 hPa
Medium volatility
Christchurch Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 21:00
Type I-II
🔴 17 min to burn
Type III-IV
🟡 26 min to burn
Type V-VI
🟢 43 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
13.9°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in New Zealand
Flight Traffic
High
87/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~109
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Christchurch
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:45
☀️ Noon
13:27
🌇 Sunset
21:10
⏱️ Daylight
15h 25m
Wind Speed
23.6 km/h
Moderate wind
Sunshine
10.6 hrs
Direct Sun (Cloud-free)
Humidity
70%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Christchurch
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Christchurch
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Active seismic zone. Multiple earthquakes per year.
Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Christchurch on December 20 averages 19.5°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 92/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Christchurch Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
December 13
20.2°C • 14% rain
Score
100
December 27
20°C • 20% rain
Score
96
December 14
20.2°C • 18% rain
Score
95
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 20) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Christchurch Worth Visiting on December 20?
Planning a trip to Christchurch on December 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.5°C with a 26% historical precipitation risk.
✈️ Travel Logistics: Approximately 109 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for New Zealand, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 18.2°C (refreshing tonic). Wave conditions are generally lake-like with heights around 0m.
📊 Historical Extremes: The hottest December 20 recorded in the last 30 years saw temperatures hit 26.2°C in 2023, while the coldest dropped to 7.7°C in 2016.