May 18 is generally a great time to visit Tromsø. While there is a slight chance of rain (37%), showers are usually brief. Expect comfortable 8°C weather. As it's peak season for Tromsø, we recommend booking your stay well in advance to secure the best rates.
View the full calendar
Essential Travel Info for Tromsø
Currency
NOK
kr Norwegian krone
Language
Norwegian Nynorsk
+2 more
Driving
Right side
Connect
Tromsø has a goodcellular4G and 5G signa...
Safety
Very High Safety
GPI: 1.465
Tromsø Weather Forecast for May 18
"Mild & Comfortable. Expect average highs of 8°C. 37% chance of snow."
What to Wear in Tromsø in May
Based on historical data for May 18, Tromsø typically experiences temperatures between 2°C and 8°C. We recommend packing heavy coat, scarf, gloves along with other layers to stay comfortable. With a 37% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Tromsø
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
8°C
Daytime Peak
Average Low
2°C
Nighttime Low
Feels Like
5.9°C
❄️ Slightly colder
Snow Chance
37%
Avg 2.4mm if it snows
Snowfall
0.5 cm
~37% chance
Pressure
1013.3 hPa
High volatility
Tromsø Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 84% 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
🔴 44 min to burn
Type III-IV
🟡 66 min to burn
Type V-VI
🟢 110 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
5.3°C
Dry air
Heat Stress
Low
No heat warning
😕 Best outdoor time:
Midday (11 AM - 3 PM) when warmest
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Norway
Flight Traffic
High
94/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~62
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Tromsø
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
23:50
☀️ Noon
11:42
🌇 Sunset
23:33
⏱️ Daylight
23h 43m
Wind Speed
11.8 km/h
Light breeze
Sunshine
9.7 hrs
Direct Sun (Cloud-free)
Humidity
83%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Tromsø
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 Tromsø
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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, Tromsø on May 18 averages 8°C with a 37% precipitation probability. Wedding/Outdoor Event Score: 49/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Tromsø Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
May 25
9.8°C • 31% rain
Score
62
May 24
9.5°C • 30% rain
Score
61
May 23
9.1°C • 33% rain
Score
58
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Tromsø Worth Visiting on May 18?
Planning a trip to Tromsø on May 18? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 8°C with a 37% historical precipitation risk.
✈️ Travel Logistics: Approximately 62 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 7 vaccinations are recommended for Norway, including COVID-19.
📊 Historical Extremes: The hottest May 18 recorded in the last 30 years saw temperatures hit 12.6°C in 2019, while the coldest dropped to -1.5°C in 2025.