Yes, 21°C is generally considered a very good, comfortable, and healthy indoor temperature, often ideal for living areas and sleep, though comfort can vary by age, health, and personal preference. It's a standard recommendation for homes and offices, providing comfort without being too hot or too cold for most people, especially when dressed appropriately.
Remember that when you see a weather forecast on TV, in a newspaper or on the radio, that anything from 20 degrees upwards is going to be warm, above 25 degrees is hot, above 30 degrees is very hot.
A long-sleeved T-shirt or light knit will come in handy.” A long-sleeved long T or a thin knit one can be comfortable in the daytime when the maximum temperature is 21 degrees Celsius. We recommend enjoying an adult's relaxing coordinate with high quality clothing made of carefully selected materials.
Feeling cold in a warm room can be normal variation but often stems from lower heat production, impaired circulation, hormonal or hematologic conditions, autonomic or neurologic issues, medications, or behavioral factors.
Here's a guide: 21 degrees: Recommended living room temperature. Please note: If you have babies or small children, you should contact your health worker or GP in relation to the required room temperature, as babies need a slightly lower temperature. 18 degrees: Minimum temperature with no health risk.
In some areas, the temperatures can drop to unsafe conditions for people and it's good to know when the cold is too cold. When temperatures drop between 21-32 degrees, limit outdoor activities to 15-20 minutes for small children. If it drops to below 20 degree, bring the kids indoors.
The WHO recommends 18C as a minimum for indoor temperature but recommends 21C if there are any children or elderly people in the home. Overall, the range of temperatures they deem safe is 18C to 22C, but we'll stick with the 21C.
Hypothermia is most likely at very cold temperatures, but it can occur even at cool temperatures above 40 degrees Fahrenheit if a person becomes chilled from rain, sweat, or submersion in cold water.
Finally, there's also research to suggest that your immune cells are more sluggish in cold temperatures than in warmer temperatures, which is why feeling cold or spending time in cold weather is more likely to make you sick.
16-20°C (60-68°F) – Comfortable for most people. A T-shirt and comfy shorts are perfect. 21°C+ (70°F+) – Official shorts season. Time for lightweight, breathable materials to keep you cool.
The 3-3-3 clothing rule is a simple styling method for creating many outfits from few items: choose 3 tops, 3 bottoms, and 3 shoes, which allows for 27 potential combinations (3x3x3) and reduces decision fatigue, often used for travel or building a minimalist capsule wardrobe. It's a versatile concept, sometimes expanded to include 3 layers (like jackets or cardigans) for even more looks, making dressing easier by focusing on mix-and-match versatility with core pieces.
What's The Best Temperature For Sleeping? When it comes to sleep, it's usually best to keep your room on the cooler side. So for most people, the best temperature for sleeping will fall somewhere between 65 - 70 degrees Fahrenheit (or 18 - 21 degrees Celsius).
20 degrees or warmer
Perfect weather to go jacket-free if you ask us. Should it cool down a lot at night, and you're out and about, bring a light cardi to wear as a coat and you'll be fine!
The Energy Saving Trust recommends heating your home to the lowest comfortable temperature which, for most people is between 18–20°C. People often spend time relaxing here, so it should be comfortable.
Best Humidity Level For Sleeping
The ideal indoor humidity level for sleeping is between 30% and 50%. Maintaining this range helps prevent dry skin, irritated sinuses, and congestion, all of which can disrupt restful sleep. Too little humidity can dry out airways, while too much can promote mold growth and dust mites.
Some people naturally tend to feel colder than others without any discernible cause. However, cold intolerance can also indicate an underlying medical condition, such as hypothyroidism or anemia. Dysfunction of the thyroid gland, decreased arterial blood flow, and low body fat can all cause a person to feel cold.
Set it somewhere between 60 and 65 degrees Fahrenheit. People sleep better in that temperature range. “Not only in terms of maintaining sleep, but also of falling asleep,” says Alon Avidan, MD, MPH, director of the UCLA Sleep Disorders Center. That also goes for how long you sleep and how well.
The world record highest air temperature of 134°F (57°C) was recorded at Furnace Creek on July 10, 1913.
Is 23 degrees too hot for a house? 23°C (73°F) is slightly above the standard comfort range for general living but is not uncomfortably hot for most people. In fact, this is generally the most recommended room temperature during the summer months.
It's important to make sure that your baby is a comfortable temperature – not too hot or too cold. The risk of sudden infant death syndrome (SIDS) is higher in babies who get too hot. A room temperature of 16 – 20°C, with light bedding or a lightweight, well-fitting baby sleep bag, is comfortable.
21 DEGREES PLUS: Warm
On the plus side, some of you will be able to spend hours swimming without a wetsuit.
To summarise our blog on what temperature your house should be, using a variety of sources from the NHS to the UK government - we can conclude that ideal room temperature is somewhere in between 18 and 22 degrees depending on preference - with the lowest number possible being better for your wallet.
The 3-minute rule is a simple but important guideline: wait at least three minutes after turning your air conditioner off before turning it back on. That short pause gives the refrigerant pressure in the system time to equalize.
How cool should my house be if it's 100 outside? Your AC can typically cool about 20°F below the outdoor temperature, so if it's 100°F outside, maintaining 78–80°F indoors is reasonable.