48 minutes ago, Ray Proudfoot said:

You have to balance humidity with temperature

 

The days in question were about 21C and 75% humidity. I went for a walk and was pretty sweaty. 

 

18C and 73% today.

Edited August 21, 20241 yr by martin-w

1 hour ago, martin-w said:

The days in question were about 21C and 75% humidity. I went for a walk and was pretty sweaty. 

18C and 73% today.

What day was it? If you go onto https://wunderground.com you’ll find thousands of private weather stations like mine that upload data to that site.

There’ll be sites on Guernsey that will give you that info. I’d say that was fairly uncomfortable. A breeze always helps of course.

It was Monday, Ray. 

That's an interesting website. 

Something I have found is that it's always feels warmer here than the temperature suggests. 20C here feels a lot warmer then 20C back in the Midlands..

Edited August 21, 20241 yr by martin-w

1 hour ago, martin-w said:

Something I have found is that it's always feels warmer here than the temperature suggests. 20C here feels a lot warmer then 20C back in the Midlands..

Hmmm. Struggling to understand your logic there Martin. 😉
Check your area here. https://www.wunderground.com/wundermap

18 minutes ago, Ray Proudfoot said:

Hmmm. Struggling to understand your logic there Martin. 😉

 We are talking about "feels like" though, so subjective.

My daughter said the same. 15 degrees, but you go out and it "feels" more like 20. 

Maybe it's inaccurate coastal weather forecasting.  Wind factor, humidity. Most likely the humidity variable as you alluded too. Humidity is higher near the ocean, so I understand.

 

My daughter was on Herm a few years back in December and had to take her coat off as she was sweating. Herm has its own microclimate. 

Edited August 21, 20241 yr by martin-w

My lowest humidity readings always occur in the spring as the damp winter air is dried out by the increasing strength of the sun.

The lowest I've recorded was a barely believable 17% in March 2017. Desert-like conditions and the max was only 18.5C. Minimum that morning was -0.2C.

All the records available here. https://www.cheadlehulmeweather.co.uk/record.htm

2 hours ago, martin-w said:

Something I have found is that it's always feels warmer here than the temperature suggests. 20C here feels a lot warmer then 20C back in the Midlands..

I thought I was the only one: 26ºC at Bucaramanga (my hometown) feel a lot warmer than the same 26°C here at Córdoba. All because of humidity.

4 hours ago, martin-w said:

My daughter was on Herm a few years back in December and had to take her coat off as she was sweating. Herm has its own microclimate. 

That reminds me of a chat-up line from many years ago. Not one I’ve used I hasten to add.

”You don’t sweat much for a fat lass!” Classic! 🤣
Oxen sweat, men perspire and ladies glow. 😁

The humidity is almost as significant as temperature when it comes to how the weather "feels".

We lived in New Mexico for many years and with 10-15% humidity I could stand outside with 38C and it didn't bother me too much.

On the other hand, in south Alabama where we lived for a while, it would be 30C with 85% humidity and it felt very uncomfortable.

It's 21C with 65% humidity where I am right now and doesn't feel bad at all, so like Ray said, the lower the temperature, the less significant the humidity.

Dave

I was at Naval Air Technical Training Command, Millington, Tennessee for 9 months of Navy Electronics training starting in June.
the weather every single day was 90 degrees F and 90% humidity.  It finally cooled off in late November. 😰

In the 1962 I spent 3 years in the Sahara Desert Libya, Temps upto 40c sometimes. 68 in Germany on exercise in north Germany in temps 30 below freezing, you get acclimatised.

https://www.huffingtonpost.co.uk/entry/this-is-the-reason-why-heat-in-the-uk-always-feels-much-hotter-than-abroad_uk_668412d5e4b05d5a5eb37af7#:~:text=In a TikTok video%2C Dr,as it does abroad].”

 

"Dr Rajan said: “In the UK, the relative humidity is higher than in countries with dry heat. This makes it harder for our bodies to cool down, because sweat doesn’t evaporate as well [as it does abroad].”

Edited August 22, 20241 yr by martin-w

7 hours ago, dave2013 said:

We lived in New Mexico for many years and with 10-15% humidity I could stand outside with 38C and it didn't bother me too much.

51 years ago on a cruise to observe a total solar eclipse we had the chance to walk a mile or so from the ship to the local market in Nouadhibou, Mauritania. It was 10am in late June.

The temp was over 100°F but I never sweated. I did of course but it evaporated immediately. I felt thirsty when I got back to the ship and then drank around 2 pints of water before my thirst was quenched.

Just goes to show the dangers of low humidity and great heat.

10 hours ago, Ray Proudfoot said:

Just goes to show the dangers of low humidity and great heat.

Yep.  The people out there will tell you to drink plenty of water because you can get dehydrated very fast and not realize it until it's too late.

About 10 years ago there was a tragic story of a mother and father from France found dead in White Sands National Park.  They had ventured too far with too little water and just succumbed to the heat and dehydration. The parents gave their boy more of the water they had and he survived.  Very sad.

Dave

 

Heat Index

A heat index of 178F/81C! No thanks. 

It can be strange how dehydration creeps up on you. You don't realize until it's too late, cramps, dizzy, disoriented, very dangerous!

Edited August 22, 20241 yr by Antipodeslonghaul