May 18 is generally a great time to visit Wellington. While there is a slight chance of rain (26%), showers are usually brief. Expect comfortable 14°C weather. Wellington is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Wellington
Currency
NZD
$ New Zealand dollar
Language
English
+2 more
Driving
Left side
Safety
Very High Safety
GPI: 1.269
Wellington Weather Forecast for May 18
"Mild & Comfortable. Expect average highs of 14.4°C. 26% chance of rain."
What to Wear in Wellington in May
Based on historical data for May 18, Wellington typically experiences temperatures between 11°C and 14.4°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 Wellington
Smart Suitcase
- Light Jacket
- Long Pants
Average High
14.4°C
Daytime Peak
Average Low
11°C
Nighttime Low
Feels Like
14.1°C
🌤️ Feels accurate
Rain Chance
26%
Avg 1mm if it rains
Cloud Cover
51%
Overcast
Pressure
1014.9 hPa
High volatility
Wellington Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 93% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 200 min to burn
Type III-IV
🟡 300 min to burn
Type V-VI
🟢 500 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
10.4°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
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in New Zealand
Flight Traffic
High
85/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~97
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Wellington
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
08:25
☀️ Noon
13:18
🌇 Sunset
18:11
⏱️ Daylight
9h 45m
Wind Speed
27.5 km/h
Moderate wind
Sunshine
6.9 hrs
Direct Sun (Cloud-free)
Humidity
77%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Wellington
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Wellington
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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, Wellington on May 18 averages 14.4°C with a 26% precipitation probability. Wedding/Outdoor Event Score: 87/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Wellington Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 20
14.2°C • 22% rain
Score
89
May 12
14.6°C • 22% rain
Score
88
May 19
14.3°C • 22% rain
Score
88
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 18) in other destinations
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📍 Is Wellington Worth Visiting on May 18?
Planning a trip to Wellington on May 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 14.4°C with a 26% historical precipitation risk.
✈️ Travel Logistics: Approximately 97 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 15.5°C (polar plunge). Wave conditions are generally surfers only with heights around 1.69m.
📊 Historical Extremes: The hottest May 18 recorded in the last 30 years saw temperatures hit 18.1°C in 2022, while the coldest dropped to 9.2°C in 2020.