September 11 is generally a great time to visit Mombasa. While there is a slight chance of rain (16%), showers are usually brief. Expect comfortable 27°C weather. As it's peak season for Mombasa, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Mombasa
Currency
KES
Sh Kenyan shilling
Language
English
+1 more
Driving
Left side
Connect
Mombasa has several post offices open M-...
Safety
Moderate Safety
GPI: 2.303
Mombasa Weather Forecast for September 11
"Warm & Sunny. Expect average highs of 27.4°C. 16% chance of rain."
What to Wear in Mombasa in September
Based on historical data for September 11, Mombasa typically experiences temperatures between 22.9°C and 27.4°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (16% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Mombasa
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
27.4°C
Daytime Peak
Average Low
22.9°C
Nighttime Low
Feels Like
30.5°C
🔥 Feels warmer
Rain Chance
16%
Avg 1.2mm if it rains
Cloud Cover
46%
Light drizzle
Pressure
1015.6 hPa
Low volatility
Mombasa Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
23.4°C
Humid/Sticky
Heat Index
30.5°C
Feels hotter
😐 Best outdoor time:
Morning hours (before 11 AM)
Marine Conditions
Jellyfish Warning
High water temps may attract jellyfish swarms.
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Kenya
Flight Traffic
High
89/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~32
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Mombasa
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:17
☀️ Noon
12:19
🌇 Sunset
18:21
⏱️ Daylight
12h 4m
Wind Speed
19 km/h
Gentle breeze
Sunshine
10.9 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Mombasa
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 Mombasa
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
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Mombasa on September 11 averages 27.4°C with a 16% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Mombasa Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 5
27.2°C • 15% rain
Score
100
September 10
27.4°C • 15% rain
Score
100
September 17
27.6°C • 14% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 11) in other destinations
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📍 Is Mombasa Worth Visiting on September 11?
Planning a trip to Mombasa on September 11? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 27.4°C with a 16% historical precipitation risk.
✈️ Travel Logistics: Approximately 32 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 13 vaccinations are recommended for Kenya, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 26.6°C (tropical bath). Wave conditions are generally surfers only with heights around 1.6m.
📊 Historical Extremes: The hottest September 11 recorded in the last 30 years saw temperatures hit 28.1°C in 2023, while the coldest dropped to 21.7°C in 2016.