When is the best time to go to Koesan
The chart above shows the best time of year to visit Koesan, South Korea. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Koesan
Koesan weather by month
Please note our recommendations for when to visit Koesan are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 1°C | 27mm | 6.3hrs | 10.9hrs |
The climate in Koesan during January can be summarized as cold and dry.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Koesan.
January is in the winter in Koesan and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (33°F), whilst at night -10°C (14°F) is normal.
On average January is the driest month of the year in Koesan with around 27mm 1.1 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 3°C | 30mm | 6.9hrs | 11.7hrs |
February in Koesan is generally reasonably dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Koesan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the winter in Koesan and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 4°C (38°F), whilst at night -8°C (19°F) is normal.
On average February is the 2nd driest month of the year in Koesan with around 30mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 9°C | 52mm | 7.7hrs | 12.8hrs |
The weather in March in Koesan is characteristically cool and reasonably dry.
Based on weather alone, this is probably a time of year to avoid going to Koesan for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
March is in the spring in Koesan and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 10°C (50°F), whilst at night -2°C (28°F) is normal.
On average March is the 3rd driest month of the year in Koesan with around 52mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 16°C | 90mm | 8.4hrs | 14hrs |
Koesan's weather in April is typically mild and a little damp in nature.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Koesan.
April is in the spring in Koesan and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 4°C (39°F) is normal.
On average April is the 4th driest month of the year in Koesan with around 90mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.4 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 92mm | 9.1hrs | 15hrs |
May is a a little damp month in Koesan and the temperature is generally mild.
It is perhaps the perfect month to visit Koesan, with some surprisingly good weather at this time of year.
May is in the spring in Koesan and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (73°F), whilst at night 10°C (49°F) is normal.
On average May is the 5th driest month of the year in Koesan with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 24°C | 154mm | 8.3hrs | 10.9hrs |
June in Koesan is generally wet with the temperature being warm.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Koesan.
June is in the summer in Koesan and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 16°C (60°F) is normal.
On average June is the 6th driest month of the year in Koesan with around 154mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 26°C | 309mm | 6.8hrs | 11.7hrs |
July in Koesan is generally very wet with the temperature being hot.
Based on weather alone, this is probably a time of year to avoid going to Koesan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
July is in the summer in Koesan and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (84°F), whilst at night 20°C (68°F) is normal.
On average July is the 6th wettest month of the year in Koesan with around 309mm 12.2 inches of rain making it a very wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 26°C | 243mm | 7.4hrs | 12.8hrs |
The weather in August in Koesan is characteristically hot, humid and very wet.
Based on weather alone, this is probably a time of year to avoid going to Koesan for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
August is in the summer in Koesan and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (85°F), whilst at night 20°C (68°F) is normal.
On average August is the 5th wettest month of the year in Koesan with around 243mm 9.5 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.4 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 22°C | 136mm | 7.3hrs | 14hrs |
Koesan's weather in September is typically warm and wet in nature.
Based on weather alone, this is probably a time of year to avoid going to Koesan for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
September is in the fall / autumn in Koesan and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 25°C (77°F), whilst at night 13°C (56°F) is normal.
On average September is the 4th wettest month of the year in Koesan with around 136mm 5.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 17°C | 47mm | 7.4hrs | 15hrs |
October is a reasonably dry month in Koesan and the temperature is generally mild.
It is perhaps the perfect month to visit Koesan, with some inordinately good weather at this time of year.
October is in the fall / autumn in Koesan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 19°C (67°F), whilst at night 6°C (42°F) is normal.
On average October is the 3rd wettest month of the year in Koesan with around 47mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.4 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 10°C | 45mm | 5.9hrs | 10.9hrs |
November in Koesan is generally reasonably dry with the temperature being cool.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Koesan.
November is in the fall / autumn in Koesan and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cold 11°C (51°F), whilst at night -1°C (30°F) is normal.
On average November is the 2nd wettest month of the year in Koesan with around 45mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 3°C | 27mm | 5.9hrs | 11.7hrs |
December in Koesan is generally dry with the temperature being cold.
Although outside the main holiday season, there is still plenty of relatively acceptable weather around this time of year. This makes it an okay time to visit Koesan.
December is in the winter in Koesan and is typically the warmest month of the year. Daytime maximum temperatures average around a freezing 4°C (39°F), whilst at night -7°C (19°F) is normal.
On average December is the wettest month of the year in Koesan with around 27mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
Other monthly averages
Koesan weather stats
| Hottest month: | August | 29°C 84.2°F |
|---|---|---|
| Driest month: | December | 27mm 1.1ins |
| Sunniest month: | March | 7.7hrs |
| Coldest month: | January | 0.5°C 32.9°F |
| Wettest month: | July | 309mm 12.2ins |
| Warmest sea: | August | 25.6°C 78.1°F |
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