May 21 is generally a great time to visit Margaret River. While there is a slight chance of rain (20%), showers are usually brief. Expect comfortable 19°C weather. Expect a bustling atmosphere in Margaret River right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for Margaret River
Currency
AUD
$ Australian dollar
Language
English
Driving
Left side
Safety
High Safety
GPI: 1.565
Margaret River Weather Forecast for May 21
"Mild & Comfortable. Expect average highs of 18.5°C. 20% chance of rain."
What to Wear in Margaret River in May
Based on historical data for May 21, Margaret River typically experiences temperatures between 12.9°C and 18.5°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (20% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Margaret River
Smart Suitcase
- Light Jacket
- Long Pants
Average High
18.5°C
Daytime Peak
Average Low
12.9°C
Nighttime Low
Feels Like
18.5°C
🌤️ Feels accurate
Rain Chance
20%
Avg 2mm if it rains
Cloud Cover
55%
Overcast
Pressure
1019 hPa
Medium volatility
Margaret River Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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
13.4°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
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Australia
Flight Traffic
High
91/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~20
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Margaret River
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
07:10
☀️ Noon
12:17
🌇 Sunset
17:25
⏱️ Daylight
10h 14m
Wind Speed
17.8 km/h
Gentle breeze
Sunshine
7.9 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Margaret River
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Margaret River
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Margaret River on May 21 averages 18.5°C with a 20% precipitation probability. Wedding/Outdoor Event Score: 94/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Margaret River Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 15
19.1°C • 19% rain
Score
96
May 16
19.2°C • 20% rain
Score
96
May 17
19.2°C • 19% rain
Score
96
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 21) in other destinations
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📍 Is Margaret River Worth Visiting on May 21?
Planning a trip to Margaret River on May 21? 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 18.5°C with a 20% historical precipitation risk.
✈️ Travel Logistics: Approximately 20 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Australia, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 20.4°C (refreshing tonic). Wave conditions are generally surfers only with heights around 2.87m.
📊 Historical Extremes: The hottest May 21 recorded in the last 30 years saw temperatures hit 22.5°C in 2022, while the coldest dropped to 9.6°C in 2025.