Climate and monthly weather forecast
Gunsan, South Korea

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The climate of Gunsan

Gunsan, located in South Korea, experiences a Humid subtropical climate that does not have a dry season, classified as Cfa in the Köppen climate classification system. This climate type means that precipitation is significant, no month lies below 30mm (1.18"). Throughout the year, Gunsan undergoes marked weather changes due to the absence of a dry season and the varying proximity to the sea, influencing the temperatures and the relative humidity.

Temperature fluctuations throughout the year characterize the climate in Gunsan with a substantial variance in temperature, particularly apparent between winter and summer. Peak temperatures range from 3.5°C (38.3°F) to 28.1°C (82.6°F) while minimum temperatures swing between -1°C (30.2°F) and 23.3°C (73.9°F). The relative humidity corroborates the high-moisture content of the area, hovering between 64% to 86% monthly.

Rainfall distribution is considerable, as expected in a humid area with no dry season, aggregating between 19mm (0.75") and 184mm (7.24") monthly. The humidity results in an average of 5 to 19.3 rainfall days per month. Furthermore, snowfall registers from November to March with the heaviest percentage in late winter. The sea temperature has a spectrum ranging from 5.3°C (41.5°F) to 25.2°C (77.4°F), reinforcing the impression of the coastal influence on the climate, especially regarding humidity and temperature.

The best time to visit Gunsan

Considering the overall weather parameters, the best time to visit Gunsan is during late Spring and early Summer. During these months, from April to June, the weather is pleasing as the city experiences mild temperatures between 9.5°C (49.1°F) to 24.2°C (75.6°F) and lower rainfall amounts, ranging from 34mm (1.34") to 66mm (2.6"). Moreover, April’s daylight stretches for 13.1 hours and in June, the daylight continues for 14.6 hours, providing plenty of time for outdoor activities.

The worst time to visit Gunsan

Based on weather conditions, July and August are the least hospitable months to visit Gunsan. These months witness the highest rainfall accumulation that soars upto 184mm (7.24") in July and tapers off to 146mm (5.75") in August. Furthermore, the temperatures reach their maximum values, especially in August, when mercury strikes 28.1°C (82.6°F). Humidity amplifies pushing the comfort to the lower end by reaching upto 86% in July and then subsiding to 83% in August, making these months less suitable for travelers.

Spring weather in Gunsan

Springtime in Gunsan signals a noticeable shift in temperatures, hospitalizing a smooth transition from freezing to warmer months. March hosts an average low at 4.1°C (39.4°F) and a high at 9.5°C (49.1°F) while, by May, the temperatures warm up to accommodate lows of 13.4°C (56.1°F) and highs of 20°C (68°F). The rainfall in spring sees a gradual increase from 34mm (1.34") in March to 47mm (1.85") in May.

Summer weather in Gunsan

Summers in Gunsan are characterized by high temperatures and significant amounts of rainfall. Starting from June, the temperature lows average around 18.2°C (64.8°F), reaching a peak of 28.1°C (82.6°F) in August. Correspondingly, the rainfall rises in the summer months, peaking at 184mm (7.24") in July. Summer is also the time when humidity levels are at their highest, resulting in muggy and uncomfortable conditions.

Autumn weather in Gunsan

Autumn brings a gradual decrease in temperatures and rainfall in Gunsan. As the season progresses from September to November, the temperatures drop from 18.6°C (65.5°F) to 7.9°C (46.2°F) as the lows and from 24.1°C (75.4°F) to 12.6°C (54.7°F) as the highs. The rainfall dips from September's high of 74mm (2.91") to November's relatively low 32mm (1.26").

Winter weather in Gunsan

Winter in Gunsan displays a remarkable drop in temperatures with cold conditions. From December to February, the temperature fluctuates between a low of -1°C (30.2°F) and a high of 5.4°C (41.7°F), indicating chilly weather. Notably, December and January record an average snowfall of 44mm (1.73") and 34mm (1.34"), respectively. The precipitation levels retract during winter months with December reporting a rainfall of 31mm (1.22").

Weather in January

January in Gunsan, South Korea is characterized by chilly conditions and average snowfall. Snowfall around 34mm (1.34") with snowfall days about 8.8 days, is a common occurrence, making the landscape a winter wonderland. The month is filled with relatively short days, foreshadowing the heart of winter. Weather in January »

Weather in February

In February, the winter chill lessens slightly in Gunsan, but does not completely disappear. There's a noticeable jump in the duration of daylight hours, yielding slightly longer days. Snowfall is markedly less than in January, signifying the slow transition towards milder weather conditions. Weather in February »

Weather in March

March brings in the spring season in Gunsan, evident from a significant rise in temperature. It is during this month that snowfall practically disappears, being reduced to 3mm (0.12"), as winter gives way to more temperate conditions. Weather in March »

Weather in April

Being deeper into the spring season, April tends to be pleasantly warmer and more humid in Gunsan. There is no record of snowfall, marking the definitive end of the winter phase and signaling the complete arrival of spring. Rainfall becomes more pronounced, suggesting the increase in precipitation inherent to this period. Weather in April »

Weather in May

May sees even longer daylight hours and the weather warms up as summer starts peeking around the corner in Gunsan. Rainfall persists and intensifies, reflecting the typical characteristics of late spring and early summer weather. The month has noticeably higher humidity levels, as warmer days encourage more moisture in the air. Weather in May »

Weather in June

The advent of June brings in the official start of summer in Gunsan. The city toasts with high humidity, making it one of the most humid months of the year. The warmer temperatures invite more rainfall, adding to the humidity but also refreshing the surroundings. Weather in June »

Weather in July

July in Gunsan experiences the first peak of the summer and is the wettest month of the year with rainfall reaching 184mm (7.24"). The outdoor scenario is marked by high humidity which makes days feel considerably warmer. Despite the balmy conditions, tourism is seen thriving in the city, as frequent rainfall does not seem to hinder the footfall of visitors. Weather in July »

Weather in August

As the last official month of summer, August in Gunsan continues to witness warm temperatures and high humidity. However, rainfall sees a drop from the preceding month, even though it is still substantially high. The sea temperature rises considerably, making it an excellent time for beach and water activities. Weather in August »

Weather in September

September in Gunsan is a transitional period between summer and autumn, making it one of the best months to visit the city. The drop in temperature becomes more evident, indicating the wrap-up of the summer season. The humidity follows a declining trend, creating a more comfortable atmosphere. Weather in September »

Weather in October

In October, the beautiful autumn season is in full swing in Gunsan. The month features significantly lower rainfall than previous months, ushering in drier weather. Simultaneously, the decrease in cloud cover invites more sunshine, giving the city a warm and inviting glow. Weather in October »

Weather in November

November in Gunsan embraces the magnificence of late autumn with its crisp climate and shortening daylight hours. The temperature continues its downward trend, signaling the approach of winter. The fluctuating weather is a signal of the major transition that lies ahead in the course of the season. Weather in November »

Weather in December

Closing out the year, December in Gunsan initiates the winter season with colder temperatures and a significant reduction in daylight hours. With snowfall reappearing around 44mm (1.73") and the increased snowfall days about 8.1 days, the onset of winter is clearly marked. Weather in December »
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Frequently asked questions

What is the coldest month in Gunsan?

January is the month that records the lowest temperatures in Gunsan, with averages ranging from a high of 3.5°C (38.3°F) to a low of -1°C (30.2°F).

What is the driest month in Gunsan?

The month with the least rainfall is January, when the rain falls for 6.3 days and typically collects 19mm (0.75") of precipitation.

How much does it rain in Gunsan?

Throughout the year, in Gunsan, South Korea, there are 120.5 rainfall days, and 749mm (29.49") of precipitation is accumulated.

When does it snow in Gunsan?

Months with snowfall are January through March, November and December.

How many days does it snow in Gunsan?

Throughout the year, there are 21.7 snowfall days, and 96mm (3.78") of snow is accumulated.

What are the least humid months in Gunsan?

February and March, with an average relative humidity of 64%, are the least humid months in Gunsan, South Korea.

What is the month with the coldest sea water in Gunsan?

February is the month with the coldest seawater in Gunsan, South Korea, with an average sea temperature of 5.3°C (41.5°F).

When it does not snow in Gunsan?

In Gunsan, snow does not fall in April through October.

When are the longest days in Gunsan?

The month with the longest days is June, with an average of 14h and 36min of daylight.

What month has the most sunshine in Gunsan?

The month with the most sunshine is June, with an average of 10h of sunshine.

What is the most humid month in Gunsan?

July is the most humid month, with an average relative humidity of 86%.

What is the rainiest month in Gunsan?

The month with the most rainfall is July, when the rain falls for 19.3 days and typically aggregates up to 184mm (7.24") of precipitation.

What is the month with the highest UV index in Gunsan?

July is the month with the highest UV index in Gunsan, South Korea, with an average maximum UV index of 7.

What time of the year is the hottest in Gunsan?

The month of August, characterized by an average high of 28.1°C (82.6°F) and a low of 23.3°C (73.9°F), is recognized as the warmest in Gunsan.

What is the month with the warmest sea water in Gunsan?

August is the month with the warmest seawater, with an average sea temperature of 25.2°C (77.4°F).

What is the snowiest month in Gunsan?

December is the month with the most snowfall in Gunsan, South Korea. Snow falls for 8.1 days and accumulates 44mm (1.73") of snow.

What is the month with the shortest days in Gunsan?

With an average of 9h and 48min of daylight, December has the shortest days of the year.

Is there Daylight Saving Time (DST) in Gunsan?

Gunsan, South Korea, does not observe Daylight Saving Time (DST). KST timezone is used over the entire year.

What is the month with the least sunshine in Gunsan?

With an average of 4.6h of sunshine, December has the least sunshine of the year.

When is the lowest UV index in Gunsan?

The month with the lowest UV index is December, with an average maximum UV index of 1.

Average temperature
Gunsan, South Korea

Average temperature - Gunsan, South Korea

The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (3.5°C).

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (-1°C).

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Average pressure
Gunsan, South Korea

Average pressure - Gunsan, South Korea

The month with the highest atmospheric pressure is January (1025.6mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).

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Average wind speed
Gunsan, South Korea

Average wind speed - Gunsan, South Korea

The windiest month (with the highest average wind speed) is December (16.5km/h).
The calmest month (with the lowest average wind speed) is June (9.6km/h).

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Average humidity
Gunsan, South Korea

Average humidity - Gunsan, South Korea

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are February and March (64%).

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Average rainfall
Gunsan, South Korea

Average rainfall - Gunsan, South Korea

The wettest month (with the highest rainfall) is July (184mm).
The driest month (with the least rainfall) is January (19mm).

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Average rainfall days
Gunsan, South Korea

Average rainfall days - Gunsan, South Korea

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (5 days).

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Average snowfall
Gunsan, South Korea

Average snowfall - Gunsan, South Korea

The month with the highest snowfall is December (44mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days
Gunsan, South Korea

Average snowfall days - Gunsan, South Korea

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature
Gunsan, South Korea

Average sea temperature - Gunsan, South Korea

The best month for swimming (with the highest average sea temperature) is August (25.2°C).
The coldest month (with the lowest average sea temperature) is February (5.3°C).

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Average daylight / Average sunshine
Gunsan, South Korea

Average daylight / Average sunshine - Gunsan, South Korea

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days
Gunsan, South Korea

Average sunshine days - Gunsan, South Korea

The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is July (9.9 days).

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Average visibility
Gunsan, South Korea

Average visibility - Gunsan, South Korea

The months with the highest visibility are February, March, April, May, June, September, October and November (10km).
The months with the lowest visibility are January, July, August and December (9km).

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Gunsan, South Korea

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