December 18 sees frequent showers in Jakarta. Historical data shows a 64% chance of rain, so pack accordingly. Temperatures average 30°C. Expect a bustling atmosphere in Jakarta right now—this is when the city truly comes alive with visitors.
View the full calendar
Essential Travel Info for Jakarta
Currency
IDR
Rp Indonesian rupiah
Language
Indonesian
Driving
Left side
Connect
The area code for Jakarta and the metrop...
Safety
High Safety
GPI: 1.8
Jakarta Weather Forecast for December 18
"Rainy & Overcast. Expect average highs of 29.9°C. 64% chance of rain."
What to Wear in Jakarta in December
Based on historical data for December 18, Jakarta typically experiences temperatures between 23.8°C and 29.9°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 64% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Jakarta
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
29.9°C
Daytime Peak
Average Low
23.8°C
Nighttime Low
Feels Like
38.2°C
🔥 Heat index effect
Rain Chance
64%
Avg 6.7mm if it rains
Cloud Cover
90%
Moderate rain
Pressure
1009.2 hPa
Low volatility
Jakarta Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 87% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 18:00
Type I-II
🔴 18 min to burn
Type III-IV
🟡 27 min to burn
Type V-VI
🟢 45 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
26.7°C
Humid/Sticky
Heat Index
38.2°C
Feels hotter
😕 Best outdoor time:
Morning hours (before 11 AM)
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
✅ Excellent Swimming Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Indonesia
Flight Traffic
High
95/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~590
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Jakarta
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:35
☀️ Noon
11:50
🌇 Sunset
18:04
⏱️ Daylight
12h 28m
Wind Speed
13.3 km/h
Gentle breeze
Sunshine
8.8 hrs
Direct Sun (Cloud-free)
Humidity
83%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Jakarta
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 Jakarta
Travel Comfort Index
Real-time tourism conditions
Weather Quality
🌧️ Variable
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Mild discomfort possible for arthritic conditions.
Moderate fish activity expected.
Unhealthy for sensitive groups. Consider wearing a mask outdoors.
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, Jakarta on December 18 averages 29.9°C with a 64% precipitation probability. Wedding/Outdoor Event Score: 62/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Jakarta Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
December 20
29.8°C • 61% rain
Score
64
December 21
29.8°C • 62% rain
Score
64
December 19
29.9°C • 62% rain
Score
63
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (December 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Jakarta Worth Visiting on December 18?
Planning a trip to Jakarta 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 29.9°C with a 64% historical precipitation risk.
✈️ Travel Logistics: Approximately 590 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 11 vaccinations are recommended for Indonesia, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 30.2°C (hot soup). Wave conditions are generally lake-like with heights around 0.29m.
📊 Historical Extremes: The hottest December 18 recorded in the last 30 years saw temperatures hit 34.3°C in 2023, while the coldest dropped to 22.7°C in 2015.