The best time to visit South Boston
Month-by-month climate averages for South Boston, MA, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit South Boston is usually May, June, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest November rain is behind you.
South Boston is warmest in July (highs near 81°F) and coldest in February (lows around 22°F), with roughly 49 inches of precipitation across the year and November the wettest month. The sweet spot for most visitors is May, June, September and October. Expect overnight frost in January, February, March and December.
These are long-run averages. For the actual days you are travelling, check the live South Boston forecast - and note how much the models agree, because that tells you how much to trust it.
South Boston weather by month
what to expect in South Boston through the year, 1991-2020 averagesHere is South Boston's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to South Boston by season.