Predicting rainfall is becoming much more complex in the current era of climate change and global warming, and months may vary year on year from drought to flood. Accurate accounts of rainfall are becoming essential in many industries, and the range of instruments listed here measure not only the amount of rain, but the quantity of all types of precipitation, as well as the occurrence of rain. This data can be collected and analysed by datalogger and software combinations, building accurate and historic logs for research and development, legal compliance, or safety preparations.