| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.7° | -5.8° | — | — | 27 |
| February | 2.1° | -5.2° | — | — | 28 |
| March | 8.1° | 0.8° | — | — | 54 |
| April | 13.2° | 5.2° | — | — | 72 |
| May | 19.6° | 11.1° | — | — | 93 |
| June | 25° | 16.7° | — | — | 94 |
| July | 27.6° | 20.4° | — | — | 92 |
| August | 27.2° | 20.4° | — | — | 93 |
| September | 23.9° | 16.7° | — | — | 94 |
| October | 17.2° | 9.8° | — | — | 85 |
| November | 10° | 3.1° | — | — | 62 |
| December | 3.5° | -2.7° | — | — | 34 |
January in South Shore averages a daily high of 0.7°C with nights around -5.8°C. A hard month to visit for comfort alone.
February in South Shore averages a daily high of 2.1°C with nights around -5.2°C. A hard month to visit for comfort alone.
March in South Shore averages a daily high of 8.1°C with nights around 0.8°C. Demanding conditions — pack for it and plan indoor options.
April in South Shore averages a daily high of 13.2°C with nights around 5.2°C. Generally workable, with some weather to plan around.
May in South Shore averages a daily high of 19.6°C with nights around 11.1°C. Comfortable conditions for being outdoors all day.
June in South Shore averages a daily high of 25°C with nights around 16.7°C. Comfortable conditions for being outdoors all day.
July in South Shore averages a daily high of 27.6°C with nights around 20.4°C. Comfortable conditions for being outdoors all day.
August in South Shore averages a daily high of 27.2°C with nights around 20.4°C. Comfortable conditions for being outdoors all day.
September in South Shore averages a daily high of 23.9°C with nights around 16.7°C. Comfortable conditions for being outdoors all day.
October in South Shore averages a daily high of 17.2°C with nights around 9.8°C. Comfortable conditions for being outdoors all day.
November in South Shore averages a daily high of 10°C with nights around 3.1°C. Generally workable, with some weather to plan around.
December in South Shore averages a daily high of 3.5°C with nights around -2.7°C. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. South Shore peaks at 94.
Based on 30 years of records, May–September scores highest for comfort in South Shore, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 27.6°C.
January is the wettest, averaging —mm of rain across roughly — wet days.
January is the coolest month, with average daily highs around 0.7°C.