August 17 sees frequent showers in St. Lucia. Historical data shows a 42% chance of rain, so pack accordingly. Temperatures average 29°C. Expect a bustling atmosphere in St. Lucia right now—this is when the city truly comes alive with visitors.
View the full calendar
Essential Travel Info for St. Lucia
Currency
XCD
$ Eastern Caribbean dollar
Language
English
Driving
Left side
St. Lucia Weather Forecast for August 17
"Warm & Sunny. Expect average highs of 28.6°C. 42% chance of rain."
What to Wear in St. Lucia in August
Based on historical data for August 17, St. Lucia typically experiences temperatures between 23.6°C and 28.6°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 42% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for St. Lucia
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
28.6°C
Daytime Peak
Average Low
23.6°C
Nighttime Low
Feels Like
33.5°C
🔥 Feels warmer
Rain Chance
42%
Avg 2.5mm if it rains
Cloud Cover
57%
Light drizzle
Pressure
1013.8 hPa
Low volatility
St. Lucia Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 94% 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
🔴 15 min to burn
Type III-IV
🟡 23 min to burn
Type V-VI
🟢 38 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
24.6°C
Humid/Sticky
Heat Index
33.5°C
Feels hotter
😐 Best outdoor time:
Morning hours (before 11 AM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Saint Lucia
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~10
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in St. Lucia
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:52
☀️ Noon
12:09
🌇 Sunset
18:26
⏱️ Daylight
12h 34m
Wind Speed
20.5 km/h
Moderate wind
Sunshine
11.2 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for St. Lucia
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 St. Lucia
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very 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
Moderate seismic activity. Occasional tremors possible.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, St. Lucia on August 17 averages 28.6°C with a 42% precipitation probability. Wedding/Outdoor Event Score: 86/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
St. Lucia Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (August 17) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is St. Lucia Worth Visiting on August 17?
Planning a trip to St. Lucia on August 17? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 28.6°C with a 42% historical precipitation risk.
✈️ Travel Logistics: Approximately 10 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Saint Lucia, including COVID-19.
📊 Historical Extremes: The hottest August 17 recorded in the last 30 years saw temperatures hit 30.4°C in 2023, while the coldest dropped to 22.6°C in 2018.