How seasonal changes affect children’s mood, sleep and energy levels

The transition from summer to autumn brings changes in the environment and daily habits that can affect children’s wellbeing. Shorter days, less exposure to natural light, temperature fluctuations and the return to school all require the body to gradually adjust.
During this period, some children may experience a temporary phase of tiredness, low energy and changes in mood, often referred to as “autumn fatigue” or, in more technical terms, seasonal low vitality.

Why seasonal changes affect children’s energy levels

One of the main factors involved in seasonal adjustment is the regulation of biological rhythms, particularly the sleep–wake cycle. The shorter daylight hours typical of autumn can affect the secretion of melatonin, a hormone that regulates the circadian rhythm, contributing to greater sleepiness and a general feeling of slowing down.
Behavioural and psychological factors also play a part, including:

  • returning to school
  • resuming structured activities
  • spending less time outdoors

These changes, especially when they happen at the same time, can make adjustment temporarily more difficult. This may be more noticeable in particularly sensitive children or when daily demands are greater.

Autumn fatigue in children: common signs

Symptoms associated with seasonal changes can vary from child to child and affect both physical and emotional wellbeing. Commonly reported signs include:

  • persistent tiredness or low energy
  • irritability or mood swings
  • difficulty concentrating
  • changes in sleep patterns, such as difficulty falling asleep or waking during the night
  • reduced appetite or, conversely, increased hunger
  • less interest in play or physical activity
  • weakening of the body’s natural defenses

These symptoms are generally temporary and tend to resolve as children gradually adjust to the new seasonal rhythms.

How to help children cope with autumn fatigue

More consistent routines and fewer demands: During periods of seasonal adjustment, it can help to temporarily cut back on excessive commitments and make room for free play and outdoor activities, weather permitting.

Sleep quality: A consistent evening routine helps children relax and prepares them for a good night’s rest. Quiet activities before bed, such as reading, can help improve sleep quality. It is advisable to limit electronic devices in the evening, as both the light they emit and the mental stimulation they provide can make it harder to fall asleep.
If sleep difficulties persist, a paediatrician can assess whether targeted support, including natural options, may be appropriate.

Nutrition and energy during autumn

A balanced diet can also provide valuable support during seasonal transitions. Helpful habits include:

  • choosing seasonal fruit and vegetables, which provide essential micronutrients
  • eating more pulses and fish to help provide protein and healthy fats
  • limiting foods high in saturated fat and simple sugars
  • keeping regular mealtimes and serving dinner a little earlier to support a good night’s sleep

An adequate intake of nutrients helps support children’s energy levels and overall wellbeing.

When to consult a paediatrician

If tiredness, changes in mood or sleep problems persist or significantly interfere with a child’s daily life, it is advisable to consult a paediatrician. A professional assessment can rule out other conditions and help identify the most appropriate approach.


This content is for information purposes only and is not a substitute for advice from a doctor or paediatrician. Always consult a healthcare professional for an individual assessment of your child’s health.