A sensory diary is a simple record of what your child experienced during the day and how they responded. You write down places, sounds, lights, crowds, textures and changes in routine, along with the calm moments and the hard ones. Over a few weeks, the notes start to show patterns that are almost impossible to see from memory alone. This guide explains how to keep a sensory diary for an autistic child, what to log and how to make it easy enough to stick with.
Why a sensory diary beats memory
At the end of a long day, most parents remember the biggest moment, usually the meltdown, and little else. Memory tends to keep the dramatic parts and drop the quiet build-up. That is normal. It is just not very useful when you are trying to understand what led up to a hard moment.
Written notes help in a few ways:
- They show the build-up. Overload is often the result of many small things stacking up. A diary shows the stack, not just the last straw.
- They show good moments too. Knowing what helps your child feel calm is just as valuable as knowing what upsets them.
- They make patterns visible. “Harder on gym days” or “better after outdoor play” only become clear when you can compare days side by side.
- They make appointments more useful. Therapists can do much more with specific examples than with “it was a rough week.”
If you are still learning what overload looks like in your child, our guide to sensory overload signs and triggers is a good place to start.
What to log in a sensory diary
You do not need to write everything. Focus on a few details that you can record quickly and the same way each time.
The basics for each entry
- Time: roughly when it happened.
- Place and activity: classroom, car, supermarket, bath time, dinner.
- Sensory details: noise level, light, crowding, smells, textures, movement.
- What came just before: a transition, a surprise, a demand, hunger or tiredness.
- Your child’s response: what you saw, such as covering ears, humming, leaving, laughing or relaxing.
- What helped: headphones, a quiet space, a snack, a hug, a break.
- Load rating: a simple 1 to 5 scale, where 1 is calm and 5 is overwhelmed.
Once a day
Add a short summary: sleep the night before, any illness, changes in routine or medication, and an overall rating for the day. These background factors often explain why the same place feels fine one day and too much the next.
Describe, do not judge
Write what you saw, not what you think it meant. “Covered ears and hid under the table when the blender started” is more useful than “overreacted.” Clear, neutral notes are easier for you and your therapist to read later.
A simple sensory diary template
You can copy this table into a notebook, a spreadsheet or a notes app. Here is an example of a filled-in day.
| Time | Place / activity | Sensory details | Before | Response | What helped | Load (1–5) |
|---|---|---|---|---|---|---|
| 7:40 | Kitchen, breakfast | Quiet, bright sun | Slept well | Calm, chatty | — | 1 |
| 12:10 | School cafeteria | Very loud, crowded | Fire drill at 11:30 | Hands over ears, did not eat | Went to library early | 4 |
| 3:30 | Park | Outdoors, few people | Pick-up from school | Swinging, relaxed | Movement | 2 |
| 5:45 | Grocery store | Fluorescent lights, music | Tired, hungry | Crying, wanted to leave | Left early, snack in car | 5 |
Keep the columns the same every day. Consistency matters more than detail.
How to keep a sensory diary going
The hardest part is not starting. It is keeping going on busy days. These steps help:
- Start small. Log only the moments that stand out, plus one calm moment each day.
- Write soon. A quick note on your phone right away is better than a perfect entry at bedtime.
- Use the same scale. A 1 to 5 load rating makes days easy to compare.
- Share the job. Ask the other parent, a grandparent or school staff to add notes from their part of the day.
- Include your child. If they can, ask them to rate how a place felt or pick a face from a feelings chart. Their view matters.
- Commit to two weeks. Patterns usually need at least a couple of weeks of notes to show up.
How to spot patterns
Once a week, sit down for ten minutes and read back through the entries. Ask yourself:
- Which places or activities show up again and again before high ratings?
- What times of day are hardest? Easiest?
- Do sleep, hunger or skipped routines make a difference?
- What reliably helps your child recover?
Write down two or three findings and one thing to try next week, such as leaving for the store before dinner instead of after school. Then watch whether the diary shows a change. This is also exactly the kind of summary that makes it easier to share progress with your therapist.
If you notice a clear pattern of distress, bring your diary to an occupational therapist. They can help you understand what you are seeing and suggest strategies that fit your child.
How automation can help
A paper diary works, but it has limits. You cannot write while you are helping your child through a hard moment, and you are not with them at school. Small details, like how loud the room really was, are easy to guess wrong.
Automation can fill some of those gaps. A phone can measure the noise level in decibels. A camera can note where your child was and how busy or bright it was. Software can put it all on one timeline, so you spend your energy on understanding and support instead of note-taking. Your own observations still matter most, because only you know what your child’s face looks like when they are starting to struggle.
Frequently asked questions
How long should I keep a sensory diary?
Try to keep it for at least two to four weeks before drawing conclusions. That is usually enough to see patterns across different days, places and routines. Many families keep a lighter version going after that, especially around changes like a new school year.
Should I use paper or an app?
Use whatever you will actually keep up with. Paper is simple and private. A spreadsheet or notes app is easier to search and share. The most important thing is using the same columns and the same rating scale every day.
Can my child help with the sensory diary?
Yes, and it can be really helpful. Depending on age and communication style, your child can rate places with numbers, colors or faces, or tell you what felt too loud or too bright. It also helps them notice their own sensory needs over time.
What should I do with the diary once I have it?
Read it back once a week, write down two or three patterns, and try one small change based on what you learn. Bring the diary or a short summary to appointments with your occupational therapist or other providers so they can see real examples.
Note: This article is for general information and does not replace advice from a doctor, occupational therapist or other qualified professional. Daily Sensory is an observation aid, not a medical device.