| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 1.6° | -7° | 7.2mm | 5 | 22 |
| February | 4.2° | -4.5° | 3.1mm | 4 | 32 |
| March | 9.7° | 0.6° | 32.8mm | 5 | 55 |
| April | 16.3° | 6.7° | 57.6mm | 7 | 74 |
| May | 21.6° | 11.8° | — | — | 94 |
| June | 25.7° | 17.3° | 11.6mm | 8 | 84 |
| July | 27.3° | 21.2° | 227.6mm | 15 | 69 |
| August | 29° | 21.4° | 194.5mm | 10 | 72 |
| September | 25.8° | 16.2° | — | — | 94 |
| October | 20° | 9.6° | — | — | 94 |
| November | 11.1° | 3° | — | — | 66 |
| December | 3.7° | -4.4° | — | — | 32 |
January in Samch’ŏn averages a daily high of 1.6°C with nights around -7°C. Expect roughly 5 wet days totalling 7.2mm. A hard month to visit for comfort alone.
February in Samch’ŏn averages a daily high of 4.2°C with nights around -4.5°C. Expect roughly 4 wet days totalling 3.1mm. A hard month to visit for comfort alone.
March in Samch’ŏn averages a daily high of 9.7°C with nights around 0.6°C. Expect roughly 5 wet days totalling 32.8mm. Generally workable, with some weather to plan around.
April in Samch’ŏn averages a daily high of 16.3°C with nights around 6.7°C. Expect roughly 7 wet days totalling 57.6mm. Generally workable, with some weather to plan around.
May in Samch’ŏn averages a daily high of 21.6°C with nights around 11.8°C. Comfortable conditions for being outdoors all day.
June in Samch’ŏn averages a daily high of 25.7°C with nights around 17.3°C. Expect roughly 8 wet days totalling 11.6mm. Comfortable conditions for being outdoors all day.
July in Samch’ŏn averages a daily high of 27.3°C with nights around 21.2°C. Expect roughly 15 wet days totalling 227.6mm. Generally workable, with some weather to plan around.
August in Samch’ŏn averages a daily high of 29°C with nights around 21.4°C. Expect roughly 10 wet days totalling 194.5mm. Generally workable, with some weather to plan around.
September in Samch’ŏn averages a daily high of 25.8°C with nights around 16.2°C. Comfortable conditions for being outdoors all day.
October in Samch’ŏn averages a daily high of 20°C with nights around 9.6°C. Comfortable conditions for being outdoors all day.
November in Samch’ŏn averages a daily high of 11.1°C with nights around 3°C. Generally workable, with some weather to plan around.
December in Samch’ŏn averages a daily high of 3.7°C with nights around -4.4°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. Samch’ŏn peaks at 94.
Based on 30 years of records, September–October scores highest for comfort in Samch’ŏn, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 29°C.
July is the wettest, averaging 227.6mm of rain across roughly 15 wet days.
January is the coolest month, with average daily highs around 1.6°C.