Do you have a big test at school today? If so, you might not be very excited about school today. Or is today the day that your class is having a party? If that’s the case, then you’re probably very excited about school today.

But what if it’s a regular school day? You know the kind. You go to school, learn, have lunch, learn some more, have recess, learn some more and then head home. No tests to worry about, but no fun surprises either. If you’re not particularly excited about or dreading something, you might hear people say you have a lukewarm feeling about it.

If you’re an aspiring chef, you may also see recipes from time to time that call for lukewarm water as an ingredient. Have you ever wondered exactly how hot is lukewarm?

Lukewarm actually comes from the Middle English word lukewarme. It was a combination of “luke” and “warm,” and the “luke” part was an alteration of the Middle English word lew, which meant tepid.

Tepid means neither hot nor cold…or about room temperature. In fact, tepid is a synonym for lukewarm, because lukewarm is used to mean neither hot nor cold.

Lukewarm can refer to actual temperature. Lukewarm water is neither hot nor cold. In the kitchen, lukewarm refers to liquid — usually water or milk — that’s only mildly warm.

As for an exact temperature for lukewarm, there’s no set standard. Some believe lukewarm to be between 98° F and 105° F. Others believe lukewarm might be in the range of 80° F to 90° F.

You can also find recipes that will tell you to mix one part room-temperature water with two parts boiling water to make lukewarm water. If you run warm water on your wrist and it feels slightly warmer than your body temperature (but not hot), then that’s probably close to lukewarm.

Lukewarm can also be used to describe a person’s attitude toward something. If you’re not particularly for or against something, your feelings toward it may be described as lukewarm.

Do you think it’s OK to feel lukewarm from time to time? People who like a particular idea will often want others to be as passionate about it as they are. Certain issues, such as political issues, may have very passionate people on both sides of the issue.

People from both sides may let their enthusiasm lead them to try to convert the lukewarm supporters to their side. At the end of the day, though, not every issue speaks in the same way to every person. If you’re indifferent and have a lukewarm response, that’s OK! Just be honest!


36 Join the Discussion

1 Star2 Stars3 Stars4 Stars5 Stars  (14 votes, avg. 3.29 out of 5)
    • Hi there, Rithik! We really appreciate you being the very first Wonder Friend to check out today’s Wonder of the Day®! Thanks for leaving us a WONDERful comment! :-)

  1. No! :( I was wrong. Today’s wonder of the day is not about warm temperatures. However, I loved today’s wonder! :D I think tomorrow’s wonder of the day is about judging.


    • You were SUPER, super close, though, TJ! In fact, we think your guess from yesterday was AWESOME! Lukewarm is kind of like regular warm…somewhere between hot and cold! Thank you for visiting Wonderopolis today and also for sharing what you think tomorrow’s Wonder might be about, too! :-)

    • Happy Monday, Chris! Thanks so much for hanging out in Wonderopolis with us today! We LOVE to have fun and learn new things at the same time, and it sounds like you do, too! We think you’re a GREAT Wonder Friend! :-)

    • We’re so SUPER happy that you love learning in Wonderopolis, Jenna! We encourage you to re-explore today’s Wonder to learn more about what “lukewarm” means! Thank you for visiting with us today and THANKS for leaving us a WONDERful comment! :-)

  2. We hate lukewarm pop, water, milk, coffee and anything else you drink. We either like it ice cold or HOT HOT HOT! Why would that woman above leave her ice tea out for two days? We thought the people in the video might be aliens or at least a little off their rocker. Tomorrow’s wonder might be involving the phrase: Never judge a book by its cover. We only have 3 more days of school left and won’t be able to post for much longer. However, some of us will post all summer long. We are hoping for our next two wonders to be WONDERTASTIC! Have a wonderful day : )

    • We always look forward to the WONDERful comments we receive from our AMAZING Wonder Friends in Mr. Draper’s Class! We bet you guys are looking forward to vacation, but you have made us SUPER happy today by letting us know that many of you will still visit us over the summer! Trust us…we’ve got LOTS of AWESOME things planned and many WONDERful Wonders to explore together!

      Thank you for sharing what you guys thought about the video for today’s Wonder. We also WONDERed why someone would leave their tea sitting out for two days. YOU GUYS ROCK! :-)

    • Waiting for the next Wonder of the Day® is difficult sometimes, we know, Zach, especially when you’re so excited about learning! We think it makes the WONDERing extra FUN, though! Thank you for sharing that you think tomorrow’s Wonder might be about judges. We like that guess a lot! :-)

  3. We had 4 kids read and watch the wonder of the day . . . and we had 3 lukewarm votes and 1 “I liked it!”

    But they all liked the video!

    • Thank you for visiting Wonderopolis together and learning fun, new facts with us today, Robertson Family! We appreciate hearing what you thought about today’s Wonder and video, too! :-)

  4. This was a very interesting article. Thanks for sharing, Wonderopolis! Can’t wait for tomorrow’s Wonder. :)

    • We’re glad you thought today’s Wonder was interesting, Katie! We did, too! We can’t wait to visit Wonderopolis again tomorrow morning, either! It is exciting to WONDER what FUN things we will all be learning about! :-)

  5. I went to the Columbus Zoo yesterday. I went to a section with rides (called Jungle Jack’s Landing). I rode a swing ride and a roller coaster. :D

    But I only got to ride those two, because I got there when it was about 40 minutes before it closed. :(

    I went back home and got some PF Chang’s for dinner. I ate dumplings, noodles, chicken, beef, fried rice and steam rice. They were really good. :)

    Also, I just had some Hershey bars for desert after eating my lunch. :)


    • That sounds like quite a WONDERful day, TJ! Thank you for sharing all the AMAZING things you did (and ate) yesterday! Jungle Jack’s Landing sounds like a super fun place to visit, and your dinner sounds like it super yummy! :-)

    • We’re really sorry you’re still having trouble viewing some of the videos here in Wonderopolis, Caelah! We appreciate you exploring today’s Wonder and leaving us a comment to let us know! Hopefully you will be able to see the video for tomorrow’s Wonder! :-)

  6. The video was pretty entertaining although we thought the lady who spit out her lukewarm ice tea was a little over dramatic. Today’s temp is pretty lukewarm, not too hot and not too cold! Our guess for tomorrow might be about a judge, lawyer, or court??

    • We like those guesses for tomorrow’s Wonder, Mrs. Schrader’s Switch Class! We thought the girl in the video was a bit over dramatic, too, but we thought that added to the funniness of the Wonder video experience! We’re so glad you guys explore each day’s Wonder together and leave us awesome comments each time you visit! We think you guys are AWESOME! :-)

  7. Just started to read these wonders. This was an odd one, but I still enjoyed it. I enjoy hot showers and cold sodas. And I guess you could say that my attitude for this wonder is far from lukewarm. Can’t wait until the next wonder tomorrow. :)

    • Thanks for leaving us a GREAT comment, boyWONDER! We appreciate your opinion of today’s Wonder and are super excited that you can’t wait to visit tomorrow’s Wonder, too! Thanks for WONDERing with us today! :-)

  8. Thank you for today’s wonder. We love pie, hot chocolate, s’mores, chocolate, apple crisp, pop, and hot fudge all lukewarm. We think tomorrow’s wonder is about not judging something (books or people, for example) before getting to know them. We look forward to hearing from you!

    From your friends in Buffalo, Minnesota

  9. That was funny because Leah spit her tea out. Have you ever had lukewarm milk? (Liam)

    I have had something that that was lukewarm and it did not taste good. (Maia)

    I have had lukewarm pop. It tasted yucky! (Hannah)

    • We’re glad you guys were able to make some great personal connections to eating and drinking things that are lukewarm, Liam, Maia and Hannah! We have had warm milk before bedtime before, Liam, but we’ve never had lukewarm milk. :-)

      Thanks for visiting today’s Wonder together today, KF Dragons friends! You guys are AMAZING and we’re SO GLAD you guys like learning with us in Wonderopolis! :-)

    • Thanks so much for your comment, Chris! We hope you’ll re-visit Wonder #538 and check out the links in the paragraph about the Avenue of the Giants! There you’ll find some really cool pictures of giant trees that you can actually drive a car through…sort of like a tunnel!

      For other Wonder Friends who might also like to learn more about giant sequoias and redwoods, here’s a link to the Wonder Chris was talking about in his comment:

      Wonder #538 – Can You Drive Through a Tree?

      Happy WONDERing! :-)

  10. You guys should wonder about nyan-cat next. That would be awesome. My class loves nyan-cat. :D
    I hope you do it next. Thanks, bye.

    • Thanks for sharing another comment with us today and for telling us know what you’d like to WONDER about in a future Wonder of the Day®, Jocelyn! We really enjoy hearing from our Wonder Friends (like you!)! Thanks for being AWESOME! :-)

  11. Today’s wonder of the day was really cool. I liked the video!! I am from Mrs. Ouverson’s 4th grade class.

    From, Sydney from Buffalo, Minnesota Tatanka Elementary School.

    • We’re so glad you enjoyed exploring today’s Wonder of the Day®, Sydney! Thanks for visiting Wonderopolis tonight and letting us know! We think you and your classmates (and Mrs. Ouverson) from Tatanka Elementary School are AMAZING! :-)

    • Hi there, Haley and Kate! Since lukewarm is a temperature, it depends on the liquid as to whether or not you could get sick by drinking it if it was lukewarm. For instance, lukewarm water is probably safe to drink, even though you might prefer it cold, but some other liquids, like milk, might make you ill if you drink them after they have been sitting out for a while and have become lukewarm. It’s best to check with a grown-up if you have a specific question about drinking something that’s lukewarm! :-)

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Have you ever wondered…

  • How hot is lukewarm?
  • What is a synonym for lukewarm?
  • Is it OK to feel lukewarm?


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Still Wondering

Explore Science NetLinks’ The Warmth of the Sun lesson to take a closer look at the sun and begin to recognize its critical function in heating and warming the air, land and water that sustain our lives.


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