Belfast climate
Can cool summers and a long Maine winter fit your household?
The current rows show a 75°F average summer high, 0.4 modeled days above 90°F, a 17.8°F average winter low, and about 139 days below freezing. Humidity is 83%, comfortable months number four, and solar exposure is 1,364 peak-sun hours. Summer Feel is Excellent at 4.8, while Winter Feel is Poor at 1.
June through September are best, while January, February, and December are toughest. Air Quality is Excellent at 4.9 out of 5 with modeled PM2.5 of 4.3 µg/m³, but allergy levels are Poor. A home visit should include heating, insulation, pipes, snow, footing, light, indoor life, power, and the route to care.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Moderate
2.5 / 5
- Average Summer High
- 75°F
- Days Above 90°F
- 0 days/year
- Summer Feel
- Excellent
Mild · 75°F
Excellent
4.8 / 5
- Average Winter Low
- 18°F / -8°C
- Days Below Freezing
- 139 days/year
- Winter Feel
- Poor
Poor
Poor
1 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 83%
- Comfortable Months
- 4 months
- Solar Exposure
- 1364 peak sun hrs/yr
Poor
Poor
Poor
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.9 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 4.3 µg/m³ 2021-2025 modeled average
- Best Months
- Jun, Jul, Aug, Sep
- Toughest Months
- Feb, Jan, Dec
- Heat Risk
- Low
- Drought Risk
- Low
- Weather Volatility
- Moderate
Excellent · 4.3 µg/m³ 2021-2025 modeled average
Very Good
3.2 / 5
Belfast in everyday life
Could Belfast work for you?
What may work well
- Cool summers, few modeled hot days, low heat risk, and excellent modeled air quality can suit a heat-averse household.
- The harbor, library, museum, and historic collections provide indoor and outdoor choices across the year.
- The climate rows make heating and winter access questions concrete.
What to think about
- Winter Feel is Poor at 1, with about 139 freezing days, high humidity, limited solar exposure, snow, and ice.
- Cold-season power, heating, footing, roads, and hospital access need a strong plan.
- Climate averages are planning anchors, not a property forecast.
Turn Belfast weather into a home decision
Inspect heat and power
Ask for seasonal bills, heating source, insulation, windows, pipes, backup power, repairs, and maintenance responsibility.
Walk the winter route
Check snow, ice, slopes, lighting, parking, groceries, pharmacy, primary care, hospital travel, and the return route.
Plan indoor life
Keep library, museum, arts, dining, exercise, medicine access, air information, and a comfortable place to rest for difficult days.
Compare two seasons
Visit during a bright summer month and a cold month so the household can judge light, heating, footing, access, energy, and social life.
Questions retirees ask
Is Belfast weather suitable for retirement?
The rows show an excellent cool summer but a poor winter, with a 75°F average high, 17.8°F average low, and about 139 freezing days. Winter tolerance is central to the fit.
Which months look best?
June through September are best in the current rows. January, February, and December are toughest. Visit in both a warm month and a cold month.
What should the home provide?
Reliable heat, insulation, pipe protection, snow and ice service, safe footing, lighting, power resilience, indoor life, and a dependable care route.
Should air quality affect the choice?
Modeled PM2.5 is 4.3 µg/m³ and Air Quality is rated Excellent, while allergy levels are Poor. Follow current information and confirm ventilation and filtration.
Belfast offers a cool-summer coastal setting, but the right home must make deep winter, heating, snow, light, power, indoor life, and care access manageable.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk, Weather Volatility
- Open-Meteo / Copernicus CAMS, checked against U.S. EPA AirData
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- Federal Emergency Management Agency National Risk Index
Used for Drought Risk
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Partner with Retirement ListsResearch and writing byGrant Gibson
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