Is 80 Degrees too hot to sleep in?
For most people, optimal sleeping conditions are between about 60° F and 68° F, and 40 to 60 percent humidity. Anything outside these ranges, experts say, and sleep quality plummets.
40 Degrees
It is cold, but not dangerously cold. You can even still get away with having mediocre gear and clothes. That's not to say I recommend it, but you'll survive with a cheap sleeping bag and pad. Note that some people “sleep warmer” than others.
Experts suggest an air temperature between about 66 and 70 degrees Fahrenheit is optimal for sleeping.
In general, the cold will not affect your sleep cycle, but it may make it more difficult to fall asleep and impact other aspects of your health. If you're too cold during sleep, your body may alter its cardiac autonomic response.
Heatstroke is a condition caused by your body overheating, usually as a result of prolonged exposure to or physical exertion in high temperatures. This most serious form of heat injury, heatstroke, can occur if your body temperature rises to 104 F (40 C) or higher.
Cold homes contribute to excess winter mortality and morbidity. Most of the health burden can be attributed to both respiratory and cardiovascular disease, especially for older people. In children, the excess winter health burden is mostly due to respiratory disease.
While some area doctors said they had no data on when a cold house becomes unsafe, they pretty much agreed that anything below 50 degrees means it's time to find safer shelter. The elderly and infants and toddlers will be affected by the cold before healthy adults.
“You can't get sick from being cold in general, whether you are outside or inside,” Fecher says.
Christopher Winter, MD, director of the Charlottesville Neurology and Sleep Medicine Center in Virginia. Sleep can be disrupted by temperatures anywhere below 65 or above 75. The sweet spot for great sleep is between 68 and 72 degrees.
Looking at the available research, most studies agree that a temperature between 60 and 67 degrees Fahrenheit is optimal for sleeping, with temperatures above 75 degrees and below 54 degrees disruptive to sleep.
Is 75 degrees too hot to sleep in?
These are just general guidelines, but temperatures should never exceed 75 degrees and should never drop below 54 degrees, as these temperatures are guaranteed to disrupt your sleep cycles and have you waking up feeling unrested.
“Looking at the available research, most studies agree that a temperature between 60 and 67 degrees Fahrenheit is optimal for sleeping, with temperatures above 75 degrees and below 54 degrees disruptive to sleep.

Sleeping in a cold room helps to boost your metabolic process, which in turn helps to lower the risk of suffering from diseases such as high blood pressure and diabetes. It also boosts the production of growth hormones which help to repair damaged muscle tissues and bone fractures.
As long as you feel comfortable, there are no health risks to sleeping in a colder room. Ideally, you should keep the temperature between 60 and 67 degrees to experience the maximum benefits.
External temperatures can interfere with the natural thermoregulation that occurs during sleep. If your bedroom is too warm – as it might be during the spring, summer, and early fall – then this can increase your body temperature5 and disturb your sleep.
Use Comfortable Clothing and Bedding
Wearing loose and lightweight clothes and using cooler bedding materials can have a positive effect on sleeping in hot weather. Wear more comfortable clothes: Sleeping in lighter and looser clothes during warmer weather may help to keep you cooler.
Sometimes, the hypothalamus struggles with body temperature control. This can lead you to warm up or even overheat. When this happens at night it can be particularly unpleasant, leading to broken sleep and even uncomfortable night sweats.
Heat stroke is the most serious heat-related illness. It occurs when the body becomes unable to control its temperature: the body's temperature rises rapidly, the sweating mechanism fails, and the body is unable to cool down. Body temperature may rise to 106°F or higher within 10 to 15 minutes.
- Headache.
- Nausea.
- Dizziness.
- Weakness.
- Irritability.
- Thirst.
- Heavy sweating.
- Elevated body temperature.
Seek emergency medical care
If you suspect heatstroke, call 911 or your local emergency number. Then move the person out of the heat right away. Cool the person by whatever means available.
How cold is too cold for your lungs?
However, current research shows that respiratory system damage can occur at temperatures warmer than -4F (-20 ).
To Prevent Bacteria Growth
Hospitals combat bacteria growth with cold temperatures. Keeping cold temperatures help slow bacterial and viral growth because bacteria and viruses thrive in warm temperatures. Operating rooms are usually the coldest areas in a hospital to keep the risk of infection at a minimum.
Even if you keep your temperature between 60°F and 65°F, your home or apartment may not be warm enough to keep you safe. This is a special problem if you live alone because there is no one else to feel the chilliness of the house or notice if you are having symptoms of hypothermia.
The recommended range is 50°F-60°F. The better the winterization in your home, the lower you can go, but 50°F is the lowest you should go. To be on the safe side, 55°F-60°F is wise.
Staying comfortable at 55 degrees
“Make sure to double up on blankets for a comfortable night's sleep,” says Christopher Morgan, founder of the website CreditHelpInfo.com. Hold on to the heat you have, advises Chris Harvey, central heating expert at Stelrad, an international radiator manufacturer.
“The World Health Organization actually recommends a temperature no lower than 64 degrees in a home for people dwelling there. The U.S. Department of Energy says 68 degrees is the optimal temperature,” says Dr.
The Risks of A Cold Living Environment
Prolonged exposure can aggravate existing conditions, such as asthma and arthritis, and can even create new problems within the body over time. Health conditions that can be worsened or caused by a cold living environment can include: Asthma. Worsening Pulmonary Conditions.
It might surprise you to find out that neither cold weather nor wet hair can cause you to catch pneumonia.
Create an Optimal Sleep Environment
A common mistake that cold sufferers make is cranking up the heat when they go to bed. A cool bedroom temperature (around 60-68F) will help reduce sweating and waking up at night, which is particularly important if you're experiencing a fever.
According to Consumer Reports, the Department of Energy and Energy Star recommend the following temperatures for households throughout the day: 78 degrees when you're home, 85 degrees when you're out of the house, and 82 degrees when you're sleeping.
What should I wear in 80 degree weather at night?
In 80 degree weather, loose fabrics are definitely the way to go, allowing the breeze to touch your skin and avoiding that trapped feeling. This look features a matching set, with a lightweight cotton short-sleeved button-down and loose-fitting shorts that have a yellow and white striped pattern.
A wet-bulb temperature of 35 °C, or around 95 °F, is pretty much the absolute limit of human tolerance, says Zach Schlader, a physiologist at Indiana University Bloomington. Above that, your body won't be able to lose heat to the environment efficiently enough to maintain its core temperature.
Excessive heating (over 72 °F or 22 °C) will waste energy and give you a sky-high utility bill. Heating to higher temperatures also lowers the relative humidity (RH) in your home, which dries out everything from your skin to the wood on your floor.
Your body's failure to cool itself
As a result, your body may develop heat cramps, the mildest form of heat-related illness. Signs and symptoms of heat cramps usually include heavy sweating, fatigue, thirst and muscle cramps. Prompt treatment usually prevents heat cramps from progressing to heat exhaustion.
85 degrees may make some people feel hot while for others it might be 90 or 95. Various studies have shown the "ideal" temperature for humans to feel most comfortable is 72 degrees.
The city of Quiryat, Omanon experienced a new world record for the highest minimum temperature on the night of June 26, 2018. In a 24-hour period – measured from midnight to midnight- the “low” temperature hadn't gone below 42.6°C (108.7°F).
I recommend trying to keep your house below 80 degrees at all times during the summer. At 80 degrees, there's a good chance the humidity level in your home will be very high. This is not only uncomfortable but inefficient.
Jeans in summer? Not always recommended – especially when the temperature climbs above 90 and it's humid outside.
Yes. In fact, many of the symptoms of seasonal illnesses are mimicked by the body's reaction to breathing in allergens (even if you are not prone to allergies) and sitting in hot, dry conditions.
This may vary by a few degrees from person to person, but most doctors recommend keeping the thermostat set between 60 to 67 degrees Fahrenheit (15.6 to 19.4 degrees Celsius) for the most comfortable sleep.
What room temperature is too high?
The recommendation regarding risk of exposure to high indoor temperatures is only "conditional". Minimal-risk high temperatures range from about 21–30 °C (70–86 °F) depending on the region, with maximum acceptable temperatures between 25–32 °C (77–90 °F).
If your bedroom temperature is above 70° F, it's too hot.
The most common recommendation, cited by places like the Cleveland Clinic and the National Sleep Foundation, is 60 to 67 degrees Fahrenheit. Within that range, experts vary. A neurologist in Virginia told Health.com that the magic number is 65. Others have advised an upper limit of 64.
Recently, the federal government released new recommendations for energy efficiency. According to these federal guidelines, during the summer you should set your thermostat at 85F during the day when no one is home. They also recommended setting your thermostat at 82F at night. Frankly, this is a bad idea.