Here are the only three things you need to remember for your summer trip to Jeju Island.

Throughout my trip planning, I was constantly worried about the weather in Jeju Island. Upon arrival, the sun shone brightly, reaching temperatures above 32 degrees Celsius like a tropical jungle. Unexpected rain showers would suddenly erupt during walks, and strong winds could blow unexpectedly while swimming at the beach, leaving clothes soaked. I realized that summer in Jeju Island isn't about "beautiful autumn foliage," but rather the "sense of tension in daily life that comes with unpredictable weather."

More than half of Jeju Island's visitors come during the summer. However, many mistakenly assume that even in summer, "they will already be able to see the autumn scenery." In reality, the weather during the summer is characterized by significant fluctuations, and there's also a possibility of typhoons. Therefore, to truly enjoy Jeju Island during this time, it's essential to have a strategy for "preparing for potential weather changes."

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What is the most important preparation for a summer trip to Jeju Island?

The most crucial thing is to develop the habit of checking weather forecasts daily. Jeju Island is a place where your expectation of "a clear morning" can be easily shattered. Often, the mornings are sunny, but by 3 PM, clouds start to gather, and rain begins to fall. Unexpected rain can cause significant problems for driving or hiking, so it's essential to check the official weather forecast from the Korea Meteorological Administration between 8 and 9 AM every morning, both before departure and after arrival.

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What should I wear?

When thinking about "summer in Jeju Island," most people pack only shorts, linen pants, and sandals. However, this is a mistake. Because the ground gets wet when it rains, and winds can suddenly become cold, it's wise to bring a lightweight but warm outer layer. Especially in Jeju Island, which has many mountainous areas, the temperature difference between day and night can be more than 10 degrees Celsius. For example, while walking the Seoso-gil trail, if clouds suddenly appear and the wind picks up, your body temperature can drop rapidly. Therefore, a thin windproof jacket or a hooded garment is an "essential item that should never be left out of your travel bag."

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Where is the heat most intense during summer in Jeju Island?

The heat is particularly intense in areas with high mountainous terrain, such as Bibal Park, or natural landscapes with many dirt paths. Especially compared to the coast, inland areas like the Jeju National Museum and Hallasan Deoji Observatory are directly exposed to sunlight, resulting in a perceived temperature of over 104 degrees Fahrenheit. In these areas, it's essential to wear a sun hat and sunglasses, and drink water every 30 minutes to regulate your body temperature. Conversely, areas near the sea (e.g., Seongsan Ilchulbong Beach, near Cheonjeyeon Waterfall) tend to be more comfortable due to the sea breeze.

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What are some "minor mistakes" to avoid during a summer trip to Jeju Island?

1. Starting a hike in the morning and starting the ascent after 2 PM: Hiking during the hottest part of the day increases the risk of heatstroke.
2. Venturing off the main path onto "small paths without trails" to avoid rain: The terrain in Jeju Island is rocky and grassy, which poses a risk of getting lost.
3. Starting to swim when "just a few raindrops" start falling: A sudden downpour can churn up the sea and create dangerous currents, especially when combined with high tide.

The key to avoiding all of these is "flexibility in your plans." When the weather changes, you may need to adjust your route or transportation. However, if your "scheduled entry times" or "itinerary are too rigid," it can only lead to frustration.

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Example: A parent and child traveling together in Jeju Island in early July.

This family had a scheduled hiking route that was supposed to start at 2 PM, and the weather was clear in the morning. However, after arriving, clouds began to gather within an hour, and around 1 PM, they decided to skip the hike and head to the bus stop because it looked like it was going to rain. However, by that time, the buses had already stopped running for the day, and they had to wait 3 hours before they could leave. This was because they lacked the "flexibility to adjust their schedule."

On the other hand, another family arrived at noon and used their car to drive to a nearby coastal area. After the rain started, they waited in a cafe that was used as a shelter. They had "researched alternative activities" to do in case of bad weather, and were able to spend their time comfortably.

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Advice

The key to a summer trip to Jeju Island is to develop the mental agility to prepare for "predictable changes." You can't control the weather, but appropriate clothing, a flexible itinerary, and prior research on alternative activities are all things that anyone can do. In particular, it's important to develop the habit of preparing a "list of options," including things like "taking a break in a coastal cafe, visiting a cultural space, or relaxing at the parking lot" during times when rain is likely. While Jeju Island is beautiful even in summer, to truly appreciate it, "preparedness" is a stronger weapon than simply hoping for the best.