| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.1° | — | 3mm | 2 | 48 |
| February | 7.2° | — | 7.6mm | 2 | 55 |
| March | 11.8° | — | 98.2mm | 12.5 | 49 |
| April | 18.1° | — | 110mm | 9 | 76 |
| May | 22.9° | — | 197mm | 8 | 84 |
| June | 25.3° | — | 79.2mm | 8 | 84 |
| July | 28.5° | — | 428.9mm | 20.2 | 64 |
| August | 28.9° | — | 374.1mm | 15 | 62 |
| September | 24.7° | — | — | — | 94 |
| October | 20.6° | — | — | — | 94 |
| November | 14° | — | — | — | 75 |
| December | 7.5° | — | — | — | 54 |
January in Gangneung averages a daily high of 5.1°C. Rain is rare — about 2 wet days and 3mm across the month. Demanding conditions — pack for it and plan indoor options.
February in Gangneung averages a daily high of 7.2°C. Rain is rare — about 2 wet days and 7.6mm across the month. Generally workable, with some weather to plan around.
March in Gangneung averages a daily high of 11.8°C. Expect roughly 12.5 wet days totalling 98.2mm. Demanding conditions — pack for it and plan indoor options.
April in Gangneung averages a daily high of 18.1°C. Expect roughly 9 wet days totalling 110mm. Comfortable conditions for being outdoors all day.
May in Gangneung averages a daily high of 22.9°C. Expect roughly 8 wet days totalling 197mm. Comfortable conditions for being outdoors all day.
June in Gangneung averages a daily high of 25.3°C. Expect roughly 8 wet days totalling 79.2mm. Comfortable conditions for being outdoors all day.
July in Gangneung averages a daily high of 28.5°C. Expect roughly 20.2 wet days totalling 428.9mm. Generally workable, with some weather to plan around.
August in Gangneung averages a daily high of 28.9°C. Expect roughly 15 wet days totalling 374.1mm. Generally workable, with some weather to plan around.
September in Gangneung averages a daily high of 24.7°C. Comfortable conditions for being outdoors all day.
October in Gangneung averages a daily high of 20.6°C. Comfortable conditions for being outdoors all day.
November in Gangneung averages a daily high of 14°C. Comfortable conditions for being outdoors all day.
December in Gangneung averages a daily high of 7.5°C. Demanding conditions — pack for it and plan indoor options.
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. Gangneung peaks at 94.
Based on 30 years of records, September–October scores highest for comfort in Gangneung, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 28.9°C.
July is the wettest, averaging 428.9mm of rain across roughly 20.2 wet days.
January is the coolest month, with average daily highs around 5.1°C.