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Boston

City · Massachusetts, 🇺🇸 United States
Population 675,647
Area 54 km²
Time zone America/New_York
Official website www.cityofboston.gov

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Climate & when to visit

Best time to visit: May, June, September

Select a month

Typical weather in January

Poor
  • 2° (feels like -3°) · extremes -18°–11°
  • -7° at night
  • 10 rainy days
  • 11 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Calm winds
  • 5°C · too cold to swim
  • UV index 1 · low

Typical weather in February

Poor
  • 3° (feels like -1°) · extremes -16°–12°
  • -6° at night
  • 9 rainy days
  • 11 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Calm winds
  • 3°C · too cold to swim
  • UV index 2 · low

Typical weather in March

Poor
  • 7° (feels like 3°) · extremes -12°–17°
  • -2° at night
  • 11 rainy days
  • 13 sunny days
  • 6 hours of sunshine per day
  • Dry air
  • Calm winds
  • 4°C · too cold to swim
  • UV index 3 · moderate

Typical weather in April

Fair
  • 14° (feels like 10°) · extremes -2°–22°
  • 4° at night
  • 11 rainy days
  • 11 sunny days
  • 7 hours of sunshine per day
  • Dry air
  • Calm winds
  • 6°C · too cold to swim
  • UV index 5 · moderate

Typical weather in May

Great
  • 19° (feels like 17°) · extremes 5°–29°
  • 10° at night
  • 11 rainy days
  • 11 sunny days
  • 7 hours of sunshine per day
  • Dry air
  • Calm winds
  • 10°C · too cold to swim
  • UV index 6 · high

Typical weather in June

Great
  • 24° · extremes 10°–32°
  • 15° at night
  • 11 rainy days
  • 11 sunny days
  • 8 hours of sunshine per day
  • Comfortable humidity
  • Calm winds
  • 15°C · too cold to swim
  • UV index 6 · high

Typical weather in July

Good
  • 28° (feels like 29°) · extremes 15°–34°
  • 19° at night
  • 11 rainy days
  • 13 sunny days
  • 8 hours of sunshine per day
  • Humid air
  • Calm winds
  • 18°C · cool for a dip
  • UV index 7 · high

Typical weather in August

Good
  • 27° (feels like 28°) · extremes 14°–33°
  • 18° at night
  • 10 rainy days
  • 12 sunny days
  • 8 hours of sunshine per day
  • Humid air
  • Calm winds
  • 19°C · cool for a dip
  • UV index 6 · high

Typical weather in September

Great
  • 23° · extremes 9°–30°
  • 15° at night
  • 9 rainy days
  • 14 sunny days
  • 7 hours of sunshine per day
  • Comfortable humidity
  • Calm winds
  • 17°C · too cold to swim
  • UV index 5 · moderate

Typical weather in October

Good
  • 16° (feels like 14°) · extremes 2°–24°
  • 9° at night
  • 10 rainy days
  • 11 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Calm winds
  • 14°C · too cold to swim
  • UV index 3 · moderate

Typical weather in November

Poor
  • 10° (feels like 7°) · extremes -4°–19°
  • 3° at night
  • 9 rainy days
  • 11 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Calm winds
  • 10°C · too cold to swim
  • UV index 2 · low

Typical weather in December

Poor
  • 5° (feels like 0°) · extremes -12°–14°
  • -3° at night
  • 11 rainy days
  • 9 sunny days
  • 4 hours of sunshine per day
  • Dry air
  • Calm winds
  • 8°C · too cold to swim
  • UV index 1 · low

Climate data: NASA POWER + Copernicus ERA5-Land and ERA5 · 1996–2025

Practical information

Currency
US Dollar USD $ · Card payments · Widely accepted
Emergency numbers
911 Police · Ambulance · Fire brigade
Electricity
Type A / Type B
120 V · 60 Hz
Languages
English
Tap water
Safe to drink
Driving side
Right
Calling code
+1
Learn more

Tours & Activities

Boston Common
Walk
Freedom Trail
Walk
Paul Revere House

Boston – Plan Your Days

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