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Post by greysrigging on Dec 24, 2023 3:00:46 GMT -5
For summer > 85 F: Oppressive 80 F-85 F: Very humid 70 F-80 F: Neutral 65 F-70 F: Dry < 65 F: Very dry Does Florida actually experience 85 F dew points? Judging from Weatherspark and my phone's Weather app, that mostly seems exclusive to the Pearl River Delta, Indo-Gangetic Plain, Bay of Bengal coast of India, and certain parts of Mainland SE Asia (Chao Phraya delta, Red River delta) The indoor summer dew point where I live is usually between 15-20 C and often surpasses 20 C if it gets above 26 C (indoors) on several days in a row. Opening windows at night lowers the temperature but doesn't really equalize indoor dew point with outdoors, which is generally between 11-17 C but IMO is more likely to go below 11 C than above 17 C. > 25 C: oppressive, Asia-tier humidity 21-25 C: very humid 17-21 C: humid 11-17 C: neutral 7-11 C: dry <7 C: very dry Dews above 29c are not that common in AU, and are noteworthy when they happen. 30c ( 86f ) I can recall on coastal sites in WA and NT tropics in the last few years but exceedingly rare and certainly out of the ordinary and of only short duration. In my experience dp's +26c-28c for days ( I want to botev with the word 'weeks' on end and 24/7 ) but, lol, it has been a tough last 7 days in and around coastal Darwin .
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Post by Beercules on Dec 27, 2023 20:00:19 GMT -5
Living in a hypderdry climate, where 75% of annual lows are below 10C, and dewpoints spending 95% of their time in the single digits, I notice anything above 10C, and sweat litres above 15C.
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Post by AJ1013 on Dec 27, 2023 21:09:59 GMT -5
For summer > 85 F: Oppressive 80 F-85 F: Very humid 70 F-80 F: Neutral 65 F-70 F: Dry < 65 F: Very dry Does Florida actually experience 85 F dew points? Judging from Weatherspark and my phone's Weather app, that mostly seems exclusive to the Persian Gulf and Red Sea coasts, Indo-Gangetic Plain, Bay of Bengal coast of India, and certain parts of Mainland SE Asia (Chao Phraya delta, Red River delta) The indoor summer dew point where I live is usually between 15-20 C and often surpasses 20 C if it gets above 26 C (indoors) on several days in a row. Opening windows at night lowers the temperature but doesn't really equalize indoor dew point with outdoors, which is generally between 11-17 C but IMO is more likely to go below 11 C than above 17 C. > 25 C: oppressive, Asia-tier humidity 21-25 C: very humid 17-21 C: humid 11-17 C: neutral 7-11 C: dry <7 C: very dry No. Average dewpoint at the peak of summer is ~75F and dewpoints over ~80F are quite rare.
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Post by greysrigging on Dec 27, 2023 21:44:08 GMT -5
27c dew points in and around Darwin at noon.
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Post by greysrigging on Dec 28, 2023 0:41:34 GMT -5
DP as high as 29.1c today at Darwin Airport ! East Point ( coastal suburb, Darwin ) since 9.00am
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Post by CRISPR on Feb 24, 2024 2:20:30 GMT -5
I think that the same dew point can feel very different depending on the heat index: 21ºC air temp + 21ºC dew is just moldy, and may even feel cool with wind. However, 36ºC air temp + 21ºC dew is quite uncomfortable.
Here's mine: 25ºC (77ºF)+ : Never experienced. 22ºC (73ºF)+ : Muggy and sticky, even light exercise becomes uncomfortable. 19ºC (66ºF)+ : Definitely humid, but walking is still ok. However, both anaerobic and aerobic exercise becomes quite unpleasant. 15ºC (59ºF)+ : Noticeably humid, but still 10ºC (50ºF)+ : Neutral: neither humid nor dry 5ºC (41ºF)+ : A little dry: my skin is still ok 0ºC (32ºF)+ : Dry, skin itches! Below 0ºC (32ºF): Very dry, time for atopic dermatitis! Below -5ºC (23ºF): Never experienced.
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Post by greysrigging on Feb 24, 2024 2:57:04 GMT -5
Was a shithouse sorta a day in the Top End yesterday.. see these max/dp combos Point Stuart - 34.8c/29c Darwin Airport - 34.3c/26c
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Post by greysrigging on Feb 24, 2024 4:36:47 GMT -5
I think that the same dew point can feel very different depending on the heat index: 21ºC air temp + 21ºC dew is just moldy, and may even feel cool with wind. However, 36ºC air temp + 21ºC dew is quite uncomfortable. Here's mine: 25ºC (77ºF)+ : Never experienced. 22ºC (73ºF)+ : Muggy and sticky, even light exercise becomes uncomfortable. 19ºC (66ºF)+ : Definitely humid, but walking is still ok. However, both anaerobic and aerobic exercise becomes quite unpleasant. 15ºC (59ºF)+ : Noticeably humid, but still 10ºC (50ºF)+ : Neutral: neither humid nor dry 5ºC (41ºF)+ : A little dry: my skin is still ok 0ºC (32ºF)+ : Dry, skin itches! Below 0ºC (32ºF): Very dry, time for atopic dermatitis! Below -5ºC (23ºF): Never experienced. Yeah... one of the reasons I take offence at FB social media idiots calling out the heat wave warnings we see nowadays as 'get over it, irs summer' b/s stuff.... Dew points can and do cause grief to the unacclimatised if the air temps are in the +32c range This time of the year in Darwin, every day is +25c dp's... ( 0ct through to about April ). Now I'm OK with it... except for the 29c/26c overnight min this morning meant a tough nights sleep without AC. ( I have AC but dont use it unless I have visitors up from down south ) In the dry season we get the odd neg DP readings too... dry flakey skin, chapped lips etc... I prefer the moist air myself....
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Post by Beercules on Feb 24, 2024 5:13:37 GMT -5
I'd argue that dewpoints are as important as temperature, if not more so. A 30C day with 5C dewpoint feels nice, almost cuddly. A 30C day with a 25C dewpoint.... well that feels as different as a 20C and 40C day just about.
There needs to be more awareness about dewpoints. Perception of heat, and comfort, is very, very directly affected by dewpoint at a given temp.
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Post by Cadeau on Feb 25, 2024 12:26:52 GMT -5
<12°C: Getting dry 12-15°C: Gray area ≥15°C: Getting humid
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Post by Milwaukee Mass Murderer on Feb 27, 2024 20:11:03 GMT -5
I prefer vapor pressure.
0: Dry >0 : Anything above zero is wet by definition. The higher the vapor pressure gets, the wetter it is. Vapor pressures above 1 atm are very unpleasant.
/s The vapor pressure of water reaches 1 atm at 100C, the temperature it boils.
The chart from greys is close enough for me. I don't have much experience at the high end of the scale. The low end is debatable. A dew point of 12C doesn't feel noticeably dry to me . I don't feel any humidity but "dry" makes me think of something unpleasant, and 12C is not that. It never gets unpleasantly dry here in summer. That's a winter thing.
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Post by Ethereal on Feb 29, 2024 0:20:00 GMT -5
>=24c: Oppressive 22-23c: Muggy 20-22c: Very Humid 18-20c: Humid 16-17c: Normal 11-15C: Dry <=10c: Very Dry
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