Gunsan weather by month & the best time to visit
🇰🇷 South Korea · beach resort · humid subtropical climate
The best time to visit Gunsan is October — its sunniest month (Sunshine Score 79/100), with May close behind. Gunsan averages about 1,884 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 56 mm of rain in October.
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- Sun hours / year
- 1,884
- Sunniest month
- October
- Peak score
- 79/100
- Rain / year
- 1,267 mm
- Snow / year
- ≈22 cm
- Midday UV at peak
- 7 (high)
- Sea at warmest
- 32°C / 90°F
- Population
- 265k
- Elevation
- 6 m
When is the best time to visit Gunsan?
For sunshine, the best time to visit Gunsan is October, then May. The dullest month is January (0/100, 27 mm of rain). The full month-by-month picture is in the table below.
How sunny is Gunsan?
Gunsan gets a moderate 1,884 hours of sunshine a year. 79 Sunshine Score points separate October (79) from January (0), so the month you pick matters. It ranks #12 of 14 destinations in South Korea for annual sunshine, below the national median of 1,959 hours. Rain has a clear season: the wettest stretch, around July, carries about 56% of the annual 1,267 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | -5° / 23°F | 27 mm | 2 | 5° / 41°F |
| February | 0 | 6° / 43°F | -3° / 27°F | 39 mm | 3 | 6° / 43°F |
| March | 20 | 11° / 52°F | 0° / 32°F | 50 mm | 4 | 7° / 45°F |
| April | 56 | 17° / 63°F | 5° / 41°F | 85 mm | 5 | 14° / 57°F |
| May | 74 | 23° / 73°F | 11° / 52°F | 85 mm | 6 | 19° / 66°F |
| June | 65 | 27° / 81°F | 17° / 63°F | 136 mm | 6 | 24° / 75°F |
| July | 62 | 29° / 84°F | 21° / 70°F | 317 mm | 6 | 27° / 81°F |
| August | 62 | 30° / 86°F | 22° / 72°F | 261 mm | 7 | 32° / 90°F |
| September | 65 | 25° / 77°F | 17° / 63°F | 134 mm | 5 | 29° / 84°F |
| October | 79 | 20° / 68°F | 10° / 50°F | 56 mm | 4 | 22° / 72°F |
| November | 34 | 13° / 55°F | 3° / 37°F | 45 mm | 2 | 17° / 63°F |
| December | 0 | 5° / 41°F | -3° / 27°F | 32 mm | 2 | 10° / 50°F |
Sea temperature in Gunsan by month
The sea off Gunsan is warmest in August at around 32°C / 90°F, and coolest in January at 5°C / 41°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Gunsan on the interactive sunshine globe →
Nearby places for sunshine
- Gwangju South Korea · 88 km · best in Oct · 1,884 h sun/yr
- Cheongju South Korea · 120 km · best in May · 1,963 h sun/yr
- Yeosu South Korea · 149 km · best in Oct · 2,024 h sun/yr
- Seoul South Korea · 175 km · best in Jun · 2,037 h sun/yr
- Daegu South Korea · 184 km · best in Oct · 2,111 h sun/yr
- Busan South Korea · 225 km · best in Oct · 2,112 h sun/yr
Nearest destinations
- Muan (Piseo-ri) South Korea · 104 km · 1,890 h sun/yr · best in Oct
- Sacheon South Korea · 160 km · 2,112 h sun/yr · best in Oct
Head-to-head
How Gunsan compares month by month: Gunsan vs Seoul · Gunsan vs Cheongju · Gunsan vs Gwangju · Gunsan vs Jeju City · all comparisons
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