Study Tips
How to Read and Interpret Climate Graphs
By James Whitfield · · 4 min read
Quick answer
A climate graph shows temperature (as a line) and rainfall (as bars) across the months of a year. Read each axis carefully — they are usually different scales on the left and right — describe the pattern rather than every value, and quote specific figures as evidence when explaining a climate.
Two datasets, one graph
A climate graph combines two things: average monthly temperature, shown as a line, and average monthly rainfall, shown as bars. Recognising that it holds two datasets is the first step.
Reading it well means handling both together — the temperature pattern and the rainfall pattern — and seeing how they relate across the year.
Watch the two axes
Climate graphs usually have different scales on the left and right axes — one for temperature, one for rainfall. Reading a value off the wrong axis is a common and costly error.
Always check which axis goes with which data before reading values. The line uses one scale, the bars the other.
Describe the pattern, not every value
Good interpretation describes the overall pattern — warm summers and mild winters, a distinct wet season — rather than listing the value for every month. Examiners want the trend, illustrated with figures.
Pick out the key features: the range of temperature, when rainfall peaks, whether there is a dry season. These characterise the climate.
Quote figures as evidence
Support your description with specific numbers from the graph — the hottest month's temperature, the total or peak rainfall. Precise figures are evidence and are often required for full marks.
A description backed by figures reads as a proper interpretation; one without them reads as vague impression.
Link to climate type
The pattern often points to a climate type or region — a graph with hot, wet summers and mild, drier winters suggests a particular climate. Connecting the data to the wider picture strengthens answers.
Being able to move from the graph to what it tells you about the place, and why, is the higher-level skill.
Compare where asked
Some questions ask you to compare two climate graphs. Here, use comparative language and focus on the differences and similarities in pattern, supported by figures from each.
As with any comparison, interweave the two rather than describing each separately, and quantify the differences with data.
Frequently asked questions
What does a climate graph show?+
Average monthly temperature as a line and average monthly rainfall as bars, across a year. It holds two datasets, so reading it means handling temperature and rainfall together and seeing how they relate.
Why do I need to check both axes?+
Because climate graphs usually have different scales on the left and right — one for temperature, one for rainfall. Reading a value off the wrong axis is a common and costly error.
Should I describe every month's value?+
No — describe the overall pattern, such as warm summers and mild winters or a distinct wet season, illustrated with a few specific figures. Examiners want the trend, not a list of every value.
How do I get full marks on climate graph questions?+
Support your description of the pattern with specific figures from the graph — the hottest month, the peak rainfall — because precise numbers are the evidence that earns full marks.
How do I compare two climate graphs?+
Use comparative language, focus on similarities and differences in the patterns, and support each point with figures from both graphs. Interweave the two rather than describing each separately.
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