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Old Yesterday, 12:00 PM
 
Location: Top of the South, NZ
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Depends on what is meant by hot -even in the middle of winter, there are days when the sun can feel distinctly hot.
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Old Yesterday, 03:08 PM
 
Location: NYC
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I'd say the sun starts to feel uncomfortably hot starting at ~16 to 20 C, pending other factors like winds, the exact angle above the horizon, humidity.


I consider myself lucky to have a lot of tall buildings around. Even at noon in June I can avoid it to a great extent.
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Old Yesterday, 06:49 PM
 
Location: Austin, TX
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It's weird but a 80 degree day in the winter here in Austin doesn't feel that hot compared to an 80 degree day in spring, assuming they are both sunny. It's all because of the sun angle even though we're more acclimated to 80 degrees in the spring than summer.

An 80 degree day in summer would feel very cool because of the fact that we're acclimated and that would be 20 degrees below normal.
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Old Yesterday, 07:43 PM
 
Location: Pacific Palisades, CA
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I'd say February to November. But I remember many days in December and January where it's 75F/24C and it feels hot even though the sun is at 33 degrees in the sky.
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Old Yesterday, 09:14 PM
 
Location: Norman, OK
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Being in the sun can feel distinctly warmer than not being in it any time of year so long as the Sun is more than about 10° above the horizon. But it can only feel unpleasantly hot once the temperature gets above 70F/21C and not usually until it gets above 80F/27C.
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Old Yesterday, 09:42 PM
 
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I was told by our Safety manager at work, that direct sunlight adds between 10 to 15°F to whatever the thermometer says, that's why the weather service always reports the temperature as taken in the shade. Obviously, haze, altitude, and time of day affects that. So, on a cooler day, the sun feels "welcome", not so much on an already warm and humid day, and why you see more carports as you head south. That's also one reason winters are considered less severe say, in Denver, than in Chicago, because it's much sunnier (more time with clear skies) in Denver than Chicago. If you're referring to "time of day" in your question, OP, I'd say within an hour after sunup and an hour before sundown. Before and after that time, the angle of inclination of the sun makes it feel much less severe.
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Old Today, 07:23 AM
 
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Quote:
Originally Posted by jackierudetsky View Post
'Cause I have experienced early-mid twenties temperatures that felt hotter than they were, especially around the head because the sun was shining on my head. Then again, it was also really humid.
Does humidity also make a difference?
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Old Today, 02:20 PM
 
Location: Norman, OK
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Quote:
Originally Posted by jackierudetsky View Post
Does humidity also make a difference?
I think it makes the sun feel less intense, but it also makes the air more uncomfortable in general, so I think the two effects roughly balance out in terms of apparent temperature.
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