Make a rain gauge

Make a rain gauge

How much does it rain?

Have you ever wondered how much it rains where you are? You can find out!

What you need:

  • 2 litre plastic fizzy pop bottle
  • Scissors
  • Sellotape
  • Ruler
  • Marker pen

How to:

Ask an adult for help using scissors.

  1. Cut around the plastic bottle about two thirds of the way up.
  2. Turn the top part upside down and put it inside the bottom part.
  3. Sellotape the two parts of the bottle together.
  4. Measure 10mm intervals from the bottom of the bottle and use the marker pen to mark these intervals on the bottle.
  5. Put your rain gauge outside. To get an accurate measure of rainfall, make sure you put it in an open space away from trees and large buildings.
  6. To stop the rain gauge falling over on windy days, you can dig a small hole to put the rain gauge in, or place stones around the bottom of the rain gauge.
  7. Check the rain gauge every day and see how much rain has fallen. Make sure you empty the rain gauge every day. To be really accurate, check the rain gauge at the same time each day.

What's happening?

You're measuring rain just like weather forecasters do!

When you hear on the weather that there has been 5mm rain in 24 hours, it's because they've collected 5mm of rainfall in the past day. They collect the rain in a bottle, just like you!

Curriculum information

  • Summary

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