On the same research paper I'm doing for the same poem "Shall I compare thee to a summer's day" I don't know what image that he demonstrates how summer is unpredictable.

Sorry I mean summer's weather is unpredictable

Read lines 3, 5, and 7.

Is it the image of a hurricane or no. Because of rough winds, the eye of heaven, and sometimes it settles.

Also could check this answer:

Question: What is the eye of heaven? And why is it not constant or trustworthy.

I know the eye of heaven is the sun and sky. But what is the other part.

Do you mean these lines?

"Sometime too hot the eye of heaven shines,
And often is his gold complexion dimm'd"

They refer to the sun.

I understand that part of the question but what is the other part. And is the first question right with the hurricane image.

Can we always depend upon the sun to shine during the day?

Hurricane or high winds is part of the weather image.

Actually, it can't be hurricane because England doesn't have hurricanes.

The worse storm I have ever been in at sea was in the North Sea, upon leaving Hamburg. The ship tossed like the proverbial cork. England was engulfed in torrential rain for days.

To analyze how Shakespeare demonstrates the unpredictability of summer in the poem "Shall I compare thee to a summer's day," you can look for specific images or metaphors that suggest variability or inconsistency. Here's a step-by-step process to help you identify such images:

1. Read and understand the poem: Begin by closely reading and understanding the entire poem. Pay attention to the overall theme, tone, and structure.

2. Identify references to summer: Make note of the lines or stanzas that mention or describe summer directly. In this case, the whole poem revolves around the comparison of the subject to a summer's day.

3. Analyze the language used: Analyze the language and imagery used to describe summer in the poem. Look for words or phrases that suggest unpredictability or change. For example, words like "temperate" or "untrimmed" may hint at the uneasiness of summer's temperament.

4. Look for contrasting elements: Note any contrasting elements within the poem that highlight the unpredictability of summer. For instance, if there are abrupt shifts in tone, description, or mood, these could indicate the inconsistency of summer being portrayed.

5. Examine metaphors or symbols: Identify any metaphors or symbols used to describe summer. Metaphors often convey abstract or complex concepts in a more tangible way. Look for metaphors that emphasize the ever-changing nature of summer.

6. Consider contextual clues: Take into account the historical and cultural context of the poem. Understanding the broader context may offer insights into how Shakespeare and his contemporaries viewed or experienced summer.

By following these steps, you'll be able to identify the specific images or metaphors that represent the unpredictability of summer in Shakespeare's poem. Remember to support your analysis with evidence from the text to reinforce your interpretation.