Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
sunny day
Grammar usage guide and real-world examplesUSAGE SUMMARY
"sunny day" is a correct and usable phrase in written English.
It can be used to describe a day that is filled with sunshine or is exceptionally bright and warm. Example: "The children spent the entire day outside, enjoying the warm breeze and playing in the sunshine on the sunny day."
✓ Grammatically correct
News & Media
Academia
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
58 human-written examples
On a sunny day.
News & Media
It's called sunny day flooding.
Academia
One sunny day, it bloomed.
News & Media
It's a sunny day outside.
News & Media
It's a languid, sunny day.
News & Media
It's a sunny day in Hebron.
Academia
Sunny day in the TC courtyard.
Academia
You can drive on a sunny day.
News & Media
Appropriately, it was a perfect sunny day.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
Floridians call this "sunny-day flooding".
News & Media
"Tons of people experience sunny-day flooding".
News & Media
Expert writing Tips
Best practice
Use "sunny day" to create a vivid and positive image in your writing, evoking feelings of warmth, happiness, and optimism.
Common error
Avoid using "sunny day" excessively as a metaphor for positive situations if it doesn't align with the overall tone or theme of your writing. Overusing it can make your writing seem cliché or insincere.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "sunny day" primarily functions as an adjective phrase modifying a noun, describing a day characterized by sunshine. As Ludwig AI underlines, the expression is commonly employed in various contexts, both literal and figurative, to convey a sense of pleasant weather or a positive situation.
Frequent in
News & Media
60%
Academia
20%
Wiki
10%
Less common in
Science
5%
Formal & Business
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "sunny day" is a versatile and commonly used phrase to describe a day filled with sunshine or to evoke feelings of positivity. As Ludwig AI confirms, the phrase is grammatically sound and widely accepted. It's frequently found in News & Media, academic writing, and on wikis, but less so in strictly formal or scientific contexts. When using this phrase, be mindful of overuse in metaphorical contexts and consider its appropriateness for the overall tone of your writing. Synonyms like "bright day" or "clear day" can provide variation. Ultimately, "sunny day" remains a valuable tool for writers seeking to convey warmth, happiness, and optimism in their work.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Bright day
Focuses on the brightness of the day, omitting the specific mention of sunshine.
Gorgeous day
Highlights the attractiveness of the day, which could be due to sun, but not always.
Clear day
Emphasizes the clarity and lack of clouds, rather than just the presence of sunshine.
Day with clear skies
Highlights the absence of clouds and the clarity of the sky.
Lovely day
A more informal and affectionate way to describe a nice day.
Day filled with sunshine
A more descriptive and slightly longer way to express the abundance of sun.
Pleasant day
Generalizes the weather condition to being agreeable, not necessarily sunny.
Beautiful weather
Shifts the focus to the overall weather quality, not just sunshine.
Daylight
Focuses simply on the presence of light, without specifying the quality.
Auspicious day
Indicates a favorable or promising day, which may or may not be related to the weather.
FAQs
How can I use "sunny day" in a sentence?
What are some synonyms for "sunny day"?
Alternatives include "bright day", "clear day", or "day filled with sunshine" depending on the specific nuance you want to convey.
Is it appropriate to use "sunny day" in formal writing?
Yes, "sunny day" is generally appropriate in formal writing, but consider the context. While it's acceptable in descriptive passages, avoid using it in highly technical or academic contexts where more precise language may be required.
What does "sunny-day flooding" mean?
"Sunny-day flooding" is a term used to describe flooding that occurs during high tides, even when the weather is clear and sunny. It's often linked to sea-level rise and can be a significant issue in coastal areas.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested