“When Summer Begins to Settle”

There comes a point late in summer when the season begins to feel different.

The afternoons may still be warm, but mornings and evenings start to feel cooler. The intensity of summer gradually begins to soften, daylight continues to shift, and the first signs of autumn become easier to notice.

Known as Chu Shu, End of Heat is the 14th of the Twenty-Four Solar Keys.

Chu Shu does not mean that hot weather suddenly disappears. Instead, it marks a gradual transition—a time when summer begins to release its hold and the body can begin recovering from the demands of the hotter months.

What Is Chu Shu?

Chu Shu generally begins around August 22–24 and continues into early September.

Its name is commonly translated as “End of Heat.” During this period, the sun continues shifting southward and the heat gradually weakens. Days can still become quite warm, while mornings and evenings may feel noticeably cooler.

This growing difference between daytime and nighttime temperatures is one of the signs that the seasonal rhythm is moving toward autumn.

Yet summer does not disappear all at once. Heat and humidity may linger even as cooler autumn conditions begin to emerge.

Chu Shu is therefore a season of transition, recovery, and gradual adjustment.

Recovering From Summer

After months of summer heat, activity, sweating, and longer days, you may begin to notice changes in your energy.

Perhaps you want a little more sleep. You may feel less energetic than earlier in the summer, or simply find yourself naturally wanting to slow down.

In traditional seasonal medicine, this period of tiredness is sometimes described as autumn fatigue. The body has just passed through the most demanding heat of summer, making Chu Shu an important time for recovery.

Rather than immediately resisting a change in energy, notice what your body seems to be asking for.

At the same time, lingering summer heat and humidity do not disappear simply because autumn is approaching. Seasonal change is gradual, and our daily habits can adjust gradually as well.

How to Support Yourself During Chu Shu

Give sleep greater priority. Maintaining adequate sleep can support recovery as summer winds down. Gradually returning to an earlier bedtime and waking time can also help establish a steadier autumn rhythm.

If you feel particularly tired during the day, a short midday rest may be refreshing. Keep naps relatively brief so they do not interfere with nighttime sleep.

Keep moving. Feeling tired does not necessarily mean becoming inactive. Comfortable movement such as walking, stretching, yoga, hiking, breathing exercises, or other moderate activities can help maintain vitality.

And pay attention to the changing temperature. What felt comfortable during the hottest weeks of summer may feel different during cooler mornings and evenings. A light layer nearby can make the transition more comfortable.

Seasonal Foods & Hydration

Even as the strongest summer heat begins to ease, warm afternoons can continue during Chu Shu. Staying well hydrated remains important.

Water can remain the foundation, while fruit-infused water, diluted fruit juice, or a gently sweet-and-tart seasonal drink can offer some variety. As the weather changes, food and drink do not need to shift suddenly from “summer” to “autumn.” Gradual adjustment follows the character of the season itself.

Late-summer fruits can also provide a natural bridge between the seasons. Pears, apples, peaches, pomegranates, lemons, and berries offer plenty of possibilities for simple seasonal meals and drinks.

Five Berry Jam

One seasonal preparation for Chu Shu is Five Berry Jam, combining schisandra, goji, mulberry, blueberry, and blackberry.

The berries are cooked together into a jam that can be enjoyed in small amounts with breakfast, yogurt, toast, or a warm drink.

It is a colorful way to carry late-summer berries into this period of seasonal transition.

Seasonal Self-Awareness

Chu Shu offers a simple question:

Is your energy beginning to change?

Think about how you have felt over the past several days.

Are you still carrying the energetic momentum of summer, or are you beginning to want more rest?

Has your sleep changed? What about your thirst or appetite? Are cooler mornings and evenings comfortable, or does your body seem to need more time to adjust?

There is no need to decide that the season caused what you are experiencing.

Simply noticing these changes can help you become more aware of your own rhythm as summer gradually gives way to autumn.

Continue Your Seasonal Wellness Journey

Seasonal wellness is an ongoing journey of learning, observing, and adapting as nature changes throughout the year.

Visit our Seasonal Wellness Journey page to explore the current Solar Key, discover practical seasonal guidance, and participate in the Seasonal Wellness Check-In whenever you’re ready. Your anonymous participation also helps us better understand how people experience seasonal changes over time.

Final Thought

Chu Shu reminds us that seasonal change rarely happens all at once. Summer warmth may still linger even as cooler mornings and evenings begin to appear. By noticing these small changes and allowing time for rest and recovery, we can gradually adjust our daily rhythm as autumn unfolds.