Due to the sunshine, you need a hat out East (4)

I believe the answer is:

heat

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'due to the sunshine' is the definition.
I can't judge whether this defines the answer.

'a hat out east' is the wordplay.
'out' indicates putting letters inside.
'east' becomes 'e' (abbreviation).
'hat' placed around 'e' is 'HEAT'.

'you need' acts as a link.

Can you help me to learn more?

(Other definitions for heat that I've seen before include "Energy that caues a rise in temperature" , "Energy that causes a rise in temperature" , "Level of spice" , "Cook" , "Hotness" .)

I've seen this clue in the Evening Standard.

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