36
16-18C is probably best. Love curling up in the duvet in the cold, but cold normally means damp too ☹️
Sleeping above 25C is miserable.
If you don't need to be super accurate:
- C to F: double then add 30
- F to C: subtract 30 then halve it
I like the room cold for sleeping. 60F (15C) is ideal, but we can't get that cool in the summer.
Thanks!
I just open the windows , so outside temp , wich ranges from -10 to +25 °C
~18C but I also like it much colder, but it hardly gets any colder in my bedroom because my partner is always freezing. In summer it's really hard for me, above 22C is uncomfortable.
The easiest way I find is to memorize the 0/10/20/30C to F conversions, then plus/minus at 2 to 1 from there.
32 = 0 50 = 10 68 = 20 86 = 30
70F is ~21C, 54F is ~12C, 81F is ~27.5C.
This comparison makes Celsius look even harder to use hahaha.
Only 10 degrees between 68 and 86? That's either a very nice but chilly day or a hot day
Where I grew up it was between 20 and 30 much of the year. Honestly a 10 point warmness scale is quite easy to adjust to.
I have heard farenheit defenders point out that we're not water - that farenheit cares about the temperatures that humans care about
I'm born and raised in the US, so I grew up on Fahrenheit, but switched my phone to Celsius about 10 years ago because I wanted to better understand the scale and have stuck with it ever since. I really don't need to know the exact temperature when I check the weather, just an estimate of whether I should dress for "hot", "cold", or "mild". One of the "tricks" I heard early on was similar: 0°C is freezing. 10°C is cold. 20°C is comfortable. 30°C is warm/hot. 40°C is fucking hot.
It goes as low as 10°C / 50°F in winter. I've programmed the radiator valve to give some heat (14°C/57°F) before going to bed and waking up. We have 2 duvets with flannel sheets, and a fleece bedspread on top. Today it's 17°C/63°F. Just one single duvet, time for regular cotton sheets, flannel ones are getting uncomfortably warm. As soon as it's about 10°C outside we'll leave the window open all night. We have a large frame with a mosquito screen and live in a very peaceful neighborhood. For summer, just a cotton sheet, that will probably be left down the feet most of the time. On holiday with sometimes 30°C the whole night, we basically cannot sleep, the confortable limit for us is close to 26°C - but it's more related to humidity than temperature
Fractions...
10C* (9F/5C) + 32F = 50F
Or
10/5=2, 2*9=18, 18+32=50
If you stick to multiples of 5 it's easy:
0C - 32F
5C - 41F
10C - 50F
...
30C - 86F
35C - 95F
40C - 104F
Whatever the room temperature is. If I'm cold I add sheets and if I'm warm I remove sheets. Easy and inexpensive
69 dude!
Yes. 20-21 is a good temperature range for sleep.
I'd prefer something like 68-70F (20-21C) at night, but something more like 73-75F (23-24C) in the day
About 17 degrees. Seems to be the sweet spot to keep my Cavalier snoring speed as low as possible without her getting cold.
- 0°C is freezing
- 10°C is cold
- 20°C is comfortable. Roughly "room temperature"
- 30°C is warm/hot
- 40°C is fucking hot
Depending on a variety of factors, I generally like my space to be 18-22°C during waking hours, and maybe 16-20°C for sleeping.
Simple conversion system:
- proper temperatures to American moon units: https://duckduckgo.com/?t=ffab&q=25C+in+F
- American moon units to proper temperatures: https://duckduckgo.com/?t=ffab&q=77F+in+C
Either copy the URL and change the temperature (25C or 77F) to your target, or click on the URL and change the input field.
The two formulas are:
F=(C x 1.8)+32
C=(F-32)/1.8
If you think about the formula for converting, it's close to multiplying or dividing by 2. This step is off by about 10% (1.8/2=0.9). So converting from F to C, subtract 32, divide by 2, then add 10%.
For C to F, multiply by 2, subtract 10%, then add 32.
At typical temps, I've found this is usually within a degree, and easy to do in my head (and I have zero working memory).
I don't care, I'm asleep.
Celsius *2, subtract 10%, add 32.
I'd like to keep it at 15, but my room refuses to cool down any further than 20C even with the window open.
25-25.5° With no fan running, up to 26 with a fan running
Whatever temperature the apartment ends up at 🥲 My cat won't sleep with the windows closed (insane behavior), and I'm not running heat or air with them open.
My ideal is 68°F or around 20°C, but kitty gets whatever she wants.
Heating and cooling are expensive at our house so we generally let the temp do what it wants so long as it stays between 64F and 80F. The dehumidifier, though, tends to keep it in the upper end of that range during the summer.
68F in the winter, 72F in the summer
I’d personally go lower in the winter, but the rest of my family disagrees
I do 65F in winter and 72-75 F in summer... but I hate paying electric bills...
Exactly the same for me.
About 65F to start with, then just before I get into bed, I turn off the heater, because supposedly you sleep better when reasonably cool.
The other comment is right, hot nights are the worst.
In a country where thermostats and air conditioners and whatever in your house isn't really a norm. So like other answers here, just whatever temperature. And I adjust the amount of layers on my bed or that I'm wearing to accommodate. Hot summer nights are the worst.
Around 17°C in the winter, as cool as I can reasonably get it in the summer, usually about 27°C
I don't know but it's too hot for me and too cold for the wife. A perfect compromise.
28°c if possible, it's been 29/30°c high humidity recently.
Yikes, that's high.
Equator, nothing much we can do.
Whatever temperature the outside air is except in the summer when it gets obnoxiously hot and humid, at which point I put a cap of 25°C on the temperature.
So last night it started around 24° at nightfall and fell to 21° in the wee hours.
It varies by season. In summer, typically 24 on 'dry' mode to pull out as much humidity as possible. In the winter, on nights that fall below 16 (Japanese homes have shit insulation), I'd set the heater to somewhere between 16-20 depending upon how cold I felt on that particular day. These days (spring), we're not using anything at night, really.
I keep it at 68 or 20. The easiest way to convert is to take 68 add 100 multiple by 37 then divide by 188.4.
this post was submitted on 20 Apr 2025
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