December 18 is statistically one of the best days of the year in Stellenbosch. With minimal rain risk (11%) and pleasant highs of 27°C, it's ideal for outdoor adventures. Stellenbosch is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Stellenbosch
Currency
ZAR
R South African rand
Language
Afrikaans
+10 more
Driving
Left side
Safety
Moderate Safety
GPI: 2.283
Stellenbosch Weather Forecast for December 18
"Warm & Sunny. Expect average highs of 27°C. 11% chance of rain."
What to Wear in Stellenbosch in December
Based on historical data for December 18, Stellenbosch typically experiences temperatures between 15.2°C and 27°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (11% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Stellenbosch
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
27°C
Daytime Peak
Average Low
15.2°C
Nighttime Low
Feels Like
28.4°C
🔥 Minor difference
Rain Chance
11%
Avg 0.4mm if it rains
Cloud Cover
31%
Overcast
Pressure
1014.2 hPa
Low volatility
Stellenbosch Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 79% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30+ required, seek shade
05:00 - 10:00
16:00 - 19:00
Type I-II
🔴 10 min to burn
Type III-IV
🟡 15 min to burn
Type V-VI
🟢 25 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
19.6°C
Noticeable
Heat Index
28.4°C
Feels hotter
🙂 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in South Africa
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~129
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Stellenbosch
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:30
☀️ Noon
12:42
🌇 Sunset
19:54
⏱️ Daylight
14h 24m
Wind Speed
20.6 km/h
Moderate wind
Sunshine
12.7 hrs
Direct Sun (Cloud-free)
Humidity
64%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Stellenbosch
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Stellenbosch
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
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, Stellenbosch on December 18 averages 27°C with a 11% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Stellenbosch Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (December 18) in other destinations
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📍 Is Stellenbosch Worth Visiting on December 18?
Planning a trip to Stellenbosch on December 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 27°C with a 11% historical precipitation risk.
✈️ Travel Logistics: Approximately 129 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 9 vaccinations are recommended for South Africa, including COVID-19.
📊 Historical Extremes: The hottest December 18 recorded in the last 30 years saw temperatures hit 35.6°C in 2021, while the coldest dropped to 12°C in 2024.