May 17 is generally a great time to visit Stone Town. While there is a slight chance of rain (29%), showers are usually brief. Expect comfortable 28°C weather. As it's peak season for Stone Town, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Stone Town
Currency
TZS
Sh Tanzanian shilling
Language
English
+1 more
Driving
Left side
Safety
Moderate Safety
GPI: 2.001
Stone Town Weather Forecast for May 17
"Warm & Sunny. Expect average highs of 28.3°C. 29% chance of rain."
What to Wear in Stone Town in May
Based on historical data for May 17, Stone Town typically experiences temperatures between 24.4°C and 28.3°C. We recommend packing t-shirt, light clothing to stay comfortable. With a 29% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Stone Town
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
28.3°C
Daytime Peak
Average Low
24.4°C
Nighttime Low
Feels Like
33°C
🔥 Feels warmer
Rain Chance
29%
Avg 1.8mm if it rains
Cloud Cover
49%
Light drizzle
Pressure
1014.3 hPa
Low volatility
Stone Town Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 83% 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
🔴 160 min to burn
Type III-IV
🟡 240 min to burn
Type V-VI
🟢 400 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
24.7°C
Humid/Sticky
Heat Index
33°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 Tanzania
Flight Traffic
High
92/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~84
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Stone Town
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:26
☀️ Noon
12:21
🌇 Sunset
18:15
⏱️ Daylight
11h 49m
Wind Speed
18.7 km/h
Gentle breeze
Sunshine
10.4 hrs
Direct Sun (Cloud-free)
Humidity
81%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Stone Town
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
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Travel Health & Safety in Stone Town
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Stone Town on May 17 averages 28.3°C with a 29% precipitation probability. Wedding/Outdoor Event Score: 91/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Stone Town Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 17) in other destinations
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📍 Is Stone Town Worth Visiting on May 17?
Planning a trip to Stone Town on May 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 28.3°C with a 29% historical precipitation risk.
✈️ Travel Logistics: Approximately 84 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 10 vaccinations are recommended for Tanzania, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 28.4°C (tropical bath). Wave conditions are generally lake-like with heights around 0.48m.
📊 Historical Extremes: The hottest May 17 recorded in the last 30 years saw temperatures hit 29.9°C in 2024, while the coldest dropped to 23.9°C in 2021.