Preparing for Record Heat This Summer: Surviving 40°C+ 'Extreme Heat Days' with the Uniqlo Thanks Festival

Summer 2026 is highly likely to become the "hottest summer" since records began. According to the Japan Meteorological Agency's warm-season forecast, temperatures nationwide are expected to significantly exceed normal levels due to global warming and the lingering effects of El Niño. In particular, this year requires urgent preparation for extreme heat, as the official use of the new term "Extreme Heat Day" (representing maximum temperatures of 40°C or higher) begins in earnest. The "Uniqlo Thanks Festival" starting this weekend will be a powerful ally in surviving this critical heatwave. In this article, we will comprehensively explain the weather trends for summer 2026 and the latest heat protection strategies using the sale wisely.

Summer 2026: The Risk of 40°C+ Becoming the "New Normal"

According to the latest long-term forecast released by the Japan Meteorological Agency, there is a 70% or higher probability that temperatures from June to August will be higher than average. Extremely hot days are already occurring in May before the end of the rainy season, necessitating heatstroke prevention even before the body has acclimated to the heat. Furthermore, there are concerns that "Extreme Heat Days" will occur frequently, especially in urban areas, due to a stronger Pacific high-pressure system than usual. Vigilance is also required for "Super Tropical Nights," where the minimum nighttime temperature does not fall below 30°C.

Uniqlo Thanks Festival 2026: Starting Friday, May 22!

A perfect opportunity to prepare your "defense equipment" against the intense heat is here. The 2026 "Uniqlo Thanks Festival" focuses more than ever on "cooling functions."

Item	Detailed Schedule / Content
Event Period	7 days from May 22 (Friday) to May 28 (Thursday), 2026
Novelty (First-come, first-served)	May 22-24 only: Get a "Neck Cooling Ring & Cold Storage Pouch" with purchases of 10,000 yen or more
Featured Sale Items	AIRism innerwear, linen shirts, shorts, various UTs
Major Collaborations	First collaboration with Cecilie Bahnsen, Blue Lock UTs

Strategic Item Utilization to Survive "Extreme Heat Days"

Rather than simply buying because it's cheap, it is important to select items based on the predicted weather. Here, we explain the main items to target at the Thanks Festival and their effectiveness. However, it's unfortunate that Uniqlo has so few color variations! While color variations are essential for selling staples, they only offer corporate-logic black and white, which is disappointing but unavoidable. For now, choose bright, reflective colors for the hot summer.

How to Enjoy: "Morning" of the First Day is the Decisive Moment

The novelty items for this Thanks Festival are extremely popular, and many stores are expected to be crowded right after opening on Friday the 22nd. At the online store, prices will switch around 2:00 to 3:00 AM on the 22nd, so securing stock in the middle of the night is a smart way to enjoy the event. Additionally, since the sale will be held simultaneously at GU and PLST, it is a great chance to buy in bulk for a total coordination.

Conclusion

For summer 2026, temperatures are expected to be so high that past common sense will no longer apply. Rather than viewing the Uniqlo Thanks Festival as a mere sale, utilize it as an opportunity to set up your "heat protection infrastructure" to protect your life. Start preparing fully for the extreme heat along with your summer wardrobe transition on May 22.