Winter
Dec → Feb3 to 6°
nights -5 to -2°
- 9 rainy days · 92 mm
When is the best time to visit Boston?
- Jan3°not recommended
- Feb4°not recommended
- Mar8°not recommended
- Apr14°fair
- May19°recommended
- Jun25°recommended
- Jul28°fair
- Aug27°fair
- Sep23°recommended
- Oct17°recommended
- Nov11°fair
- Dec6°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Boston, month by month
The table of averages, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 3° | -5° | 86 mm | 9 d | |
| February | 4° | -4° | 82 mm | 8 d | |
| March | 8° | 0° | 106 mm | 9 d | |
| April | 14° | 5° | 92 mm | 9 d | |
| May | 19° | 10° | 83 mm | 9 d | ✓ |
| June | 25° | 15° | 99 mm | 8 d | ✓ |
| July | 28° | 19° | 83 mm | 7 d | |
| August | 27° | 18° | 82 mm | 7 d | |
| September | 23° | 15° | 90 mm | 7 d | ✓ |
| October | 17° | 9° | 102 mm | 8 d | ✓ |
| November | 11° | 3° | 93 mm | 8 d | |
| December | 6° | -2° | 109 mm | 9 d |
The four seasons in Boston, in figures
What the 2015-2024 averages (Boston Logan Airport) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May8 to 19°
nights 0 to 10°
- 9 rainy days · 94 mm
Summer
Jun → Aug25 to 28°
nights 15 to 19°
- 7 rainy days · 88 mm
Autumn
Sep → Nov11 to 23°
nights 3 to 15°
- 8 rainy days · 95 mm
Book early for May to June and September to October
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Boston, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 15h16 of daylight, in December 9h05, a difference of 6h10.
9h24Jan
10h30Feb
11h48Mar
13h19Apr
14h35May
15h16Jun
14h59Jul
13h53Aug
12h25Sep
10h58Oct
9h42Nov
9h05Dec
Calculated for the latitude of the reference point "Boston Logan Airport" (42.36°). Values on the 15th of each month, local solar time.
What to do in Boston, month by month
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sightseeing & walks | ||||||||||||
| Long days |
favourablewith compromisesunfavourable
- Sightseeing & walks: March, April, May, June, July, August, September, October, November
- Long days: May, June, July
Grid derived from the climate averages (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended3°-5° at night
- 86 mm · 9 d
Low season, lower prices
February
Not recommended4°-4° at night
- 82 mm · 8 d
Low season, lower prices
March
Not recommended8°0° at night
- 106 mm · 9 d
Low season, lower prices
April
Fair14°5° at night
- 92 mm · 9 d
Low season, lower prices
May
Recommended19°10° at night
- 83 mm · 9 d
Busy, without the crush
June
Recommended25°15° at night
- 99 mm · 8 d
Busy, without the crush
July
Fair28°19° at night
- 83 mm · 7 d
Busy, without the crush
August
Fair27°18° at night
- 82 mm · 7 d
Busy, without the crush
September
Recommended23°15° at night
- 90 mm · 7 d
Busy, without the crush
October
Recommended17°9° at night
- 102 mm · 8 d
Busy, without the crush
November
Fair11°3° at night
- 93 mm · 8 d
Low season, lower prices
December
Not recommended6°-2° at night
- 109 mm · 9 d
Quiet, then the holidays
Read the twelve months in detail
January. Deep winter: 3 °C at the warmest of the day, -5 °C at night. Expect 9 days of rain in the month (86 mm). Low season: fewer people, lower prices.
February. Deep winter: 4 °C at the warmest of the day, -4 °C at night. Expect 8 days of rain in the month (82 mm). Low season: fewer people, lower prices.
March. Cool: 8 °C at best, 0 °C at night. Expect 9 days of rain in the month (106 mm). Low season: fewer people, lower prices.
April. Cool: 14 °C at best, 5 °C at night. Expect 9 days of rain in the month (92 mm). Low season: fewer people, lower prices.
May. Mild, 19 °C in the afternoon and 10 °C early in the morning. Expect 9 days of rain in the month (83 mm). Busy season, without the crush.
June. 25 °C in the afternoon and 15 °C at night. Expect 8 days of rain in the month (99 mm). Busy season, without the crush.
July. 28 °C in the afternoon and 19 °C at night. Rain stays light: 83 mm over 7 days. Busy season, without the crush.
August. 27 °C in the afternoon and 18 °C at night. Rain stays light: 82 mm over 7 days. Busy season, without the crush.
September. Mild, 23 °C in the afternoon and 15 °C early in the morning. Rain stays light: 90 mm over 7 days. Busy season, without the crush.
October. Cool: 17 °C at best, 9 °C at night. Expect 8 days of rain in the month (102 mm). Busy season, without the crush.
November. Cool: 11 °C at best, 3 °C at night. Expect 8 days of rain in the month (93 mm). Low season: fewer people, lower prices.
December. Deep winter: 6 °C at the warmest of the day, -2 °C at night. Expect 9 days of rain in the month (109 mm). Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Boston?
May to June and September to October: over these months, average highs range from 17 to 25 °C, with 8 days of rain a month on average (2015-2024 averages, Boston Logan Airport).
Which month should you avoid in Boston?
December: it is the wettest of the months to avoid, with 109 mm over 9 days of rain on average over 2015-2024 at the reference point (Boston Logan Airport).
What is the hottest month in Boston?
July, with 28 °C on average in the afternoon and 19 °C at night. 2015-2024 averages (Boston Logan Airport).
What is the coldest month in Boston?
January, with 3 °C at best during the day and -5 °C at night. 2015-2024 averages (Boston Logan Airport).
What is the driest month in Boston?
February: 82 mm over 8 days of rain, against 109 mm in December, the wettest month.
Plan this trip
📒 The free printable Boston guide: itinerary, map, where to sleep→
🧭 When to visit the American West: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: mdl70 / CC BY-SA 2.0 (Wikimedia Commons) · Devilstocksoup / CC BY-SA 3.0 (Wikimedia Commons) · Marco Almbauer / Public domain (Wikimedia Commons) · Todd Van Hoosear / CC BY-SA 2.0 (Wikimedia Commons) · Mobilus In Mobili / CC BY-SA 2.0 (Wikimedia Commons)