+42.3334° · -71.0495° · ELEV 0m

South Boston

United States · Massachusetts

Monthly weather averages for South Boston, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.

№ 01

Climate Overview

July → January

South Boston has a temperate climate. The warmest month is July (27°C average high) and the coolest is January (3°C).

№ 02

Rainfall by Month

1174 mm / year

South Boston sees 1174 mm of rain a year. The wettest month is October (124 mm); the driest is May (71 mm).

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№ 03

Best Time to Visit

May–August
May–August
10°C – 27°C · 11.0h sun

The best time to visit South Boston is May–August, when temperatures average 10°C–27°C with 11.0 sunshine hours per day.

№ 04

Monthly Breakdown

12 months · °C · mm · hours
Monthly climate normals for South Boston, United States — click a column to sort
January2.8°C-4.6°C99 mm6.0 h07:1016:36
February4.0°C-4.6°C97 mm6.6 h06:4017:15
March6.8°C-1.6°C101 mm8.1 h06:5618:49
April12.5°C4.2°C106 mm8.6 h06:0319:24
May18.8°C9.9°C71 mm10.3 h05:2319:58
June23.7°C15.1°C85 mm11.3 h05:0620:22
July27.3°C19.1°C103 mm11.5 h05:2020:19
August26.7°C18.8°C73 mm11.0 h05:5119:46
September22.7°C15.4°C104 mm9.0 h06:2418:55
October17.0°C9.8°C124 mm7.3 h06:5618:03
November10.4°C2.9°C91 mm6.5 h06:3416:22
December6.0°C-0.8°C120 mm5.6 h07:0616:12

Nearby cities

View monthly climate averages for nearby cities or compare them with South Boston.

Temperature, rainfall and sunshine, month by month.