Boston Weather Guide

Boston is a great place to visit 11 months of the year – just don’t go during the coldest month of the year in January. The winters can be miserable and you will be too. Wait for the breezy and balmy summertime when major festivals and events are in full swing. Autumn or fall is a peak season for keen walkers of the Freedom Trail who are also treated to the array of bright colours of the New England foliage.

Season and Clothing

Summer: June to August

Summer is a great time to hang out Boston’s great green spaces with a picnic and a good book, people watch at an outdoor cafe or hit up the open-air markets in SoWa. Be part of a 130-year-old tradition and take a Swan Boat ride on the pond in the Boston Public Garden - the country’s first public botanical garden. The hottest month of summer is July when temperatures reach nearly 30 degrees Celsius. The MBTA can take you to nearby Revere Beach for sun and sand and a day out of the city – especially handy when the humidity starts to creep up.

Average temperatures: 15 – 28 degrees Celsius.
Appropriate clothing: Bostonians dress smartly and simply. Prepare for hot and humid days and cool nights. Pack comfy walking shoes for pounding the pavement.
Don't forget: Your bathing suit, sunscreen, sunglasses and a hat.

Autumn: September to November

Many could argue Boston is at its most beautiful in the fall when the city’s foliage puts on quite a show. New England is famous for its autumn colours, and it’s a great time to walk around the city or head to Harvard and the quaint Massachusetts towns outside Boston. For sports fans, the New England Patriots kick off the football season at Gillette Stadium and the Red Sox chase another World Series title at Fenway Park.

Average temperatures: 3 - 23 degrees Celsius.
Appropriate clothing: It can still be very warm in early fall and a cold snap can move in late in the season. Be prepared for anything. Layers and enclosed shoes are a good idea.
Don't forget: Sunglasses and a coat.

Winter: December to February

Outside of the coldest month of January, the rest of winter is cold but clear and perfect for romantic strolls on the cobblestone and lamp-lit streets of Beacon Hill. It’s also when Boston residents retreat indoors for theatre, museums, wine and food festivals and holiday celebrations. New England in the winter can feel like you’ve stepped back in time as light snow gathers on cobblestone streets and red brick terrace houses. Temps down to -15 degrees Celsius is not uncommon in the peak of winter – you want to be well prepared to frolic in the ice and snow.

Average temperatures: -5 - 5 degrees Celsius.
Appropriate clothing: Warm layers and waterproof boots.
Don't forget: A scarf, gloves and a big coat.

Spring: March to May

For the locals, spring in Boston really begins with the first pitch at Fenway Park. As the ice melts and the flowers bloom, the city creeps back into the open with outdoor dining and park life back on the agenda. Impatient beachgoers head south to Cape Cod and get started on surfing, fishing, swimming and boating activities. However, the season’s signature event is the annual Boston Marathon on Patriot’s Day.

Average temperatures: 0 - 19 degrees Celsius.
Appropriate clothing: The weather can be unpredictable. Wear layers that can be removed or added. An umbrella is a good idea for May showers.
Don't forget: Comfy shoes for walking. Depending how early in the season you visit, you may need a heavier jacket.