Boston, Massachusetts Weather in May
United States · May climate averages and travel tips
Avg high19°C (66°F)
Avg low9°C (47°F)
Rainfall93 mm (3.7 in)
RatingExcellent 8/10
In May, Boston has average highs of 19°C (66°F) and lows of 9°C (47°F). May is spring in United States. The month is moderately rainy, with about 93 mm (3.7 in) of rain spread over 12 days, one of the driest months of the year. You get roughly 14.4 hours of daylight and frequently cloudy skies.
Is May a good time to visit Boston?
May is a good time to visit Boston (8/10), though September is even better.
May weather at a glance
| Average high | 19°C (66°F) |
|---|---|
| Average low | 9°C (47°F) |
| Daily mean | 14°C (57°F) |
| Rainfall | 93 mm (3.7 in) |
| Rainy days (1 mm+) | 12 |
| Humidity | 79% |
| Cloud cover | 63% |
| Daylight | 14.4 hours |
| Est. sunshine | 5.9 hours/day |
| Wind | 1.6 km/h |
| vs April | 6°C warmer than April, with 14 mm less rain. |
What to pack for Boston in May
- T-shirts plus a light layer for the evening
- a sweater for cool nights
- an umbrella or rain jacket
Boston weather in other months
Jan1°C / -7°C95 mmPoorFeb2°C / -7°C88 mmPoorMar6°C / -3°C108 mmPoorApr13°C / 3°C107 mmFairMay19°C / 9°C93 mmExcellentJun24°C / 14°C109 mmGoodJul28°C / 18°C113 mmGoodAug27°C / 17°C95 mmGoodSep24°C / 13°C97 mmExcellentOct17°C / 8°C126 mmGoodNov10°C / 1°C97 mmFairDec4°C / -3°C121 mmPoor
← AprilBest time to visit BostonJune →
Better weather in May nearby
- Los Angeles, California25°C · 8 mm · Excellent
- Cabo San Lucas28°C · 1 mm · Excellent
- San Diego, California24°C · 8 mm · Excellent
- San Francisco, California19°C · 18 mm · Excellent
- Tijuana24°C · 8 mm · Excellent
- Denver, Colorado23°C · 65 mm · Excellent
Nearby in May
- The Bronx, New York20°C · 96 mm
- Queens, New York17°C · 101 mm
- Manhattan, New York20°C · 96 mm
- New York17°C · 101 mm
- Brooklyn, New York17°C · 101 mm
- Montreal17°C · 82 mm
Where else is good in May? See where to go in May.