How Does The Weather Affect Our Sleep

July 29, 2020

How Does The Weather Affect Our Sleep

A good night’s sleep can be hard to come by. We all know how beneficial a proper rest can be, but most of us are also aware of how frustrating it can be when we’re unable to get the downtime we require. Various factors can influence the quality of our sleep – and many of these are sadly not within our control. However, understanding how our relationship with sleep is affected by those that are is a step towards improving the level of rest we experience. For something so vital to our health, happiness, and existence, many of us are sleep deprived and do not even realise it.

With the development of smartphones, we are lucky enough to live in a time where access to education, various forms of media and limitless news is quite literally at our fingertips. However, with this can come a struggle to disconnect – especially when the very device that provides us with each of these things also serves as our alarm clock.

However, the recency of this technology means it’s a drop in the ocean when weighed against the millions of years of evolution that have shaped us to this point. The rising and the setting of the sun defined our sleeping patterns long before alarm clocks existed. Without us being conscious of it, the weather and its daily patterns of changing light and temperature shape when we naturally feel tired or more active. Though there are limitations to how much we can affect the environment around us, the importance of these patterns cannot be overlooked in the quest to get a full, healthy night’s slumber.

Light Exposure

Exposure to natural light is vital to our physical and mental well-being, but it can also play a specific role in how easily we fall asleep at night and wake up again in the morning. Bright light at the start of the day is likely to encourage wakefulness; pulling the curtains open or using an alarm clock that simulates the sunrise can be beneficial in beginning the day without feelings of grogginess or stress – especially during the winter months. Similarly, dimming the lights on the way to winding down to sleep will help our body and brain to relax. On the other hand, the blue light typically released by electronic screens will do the opposite – stimulating our brain and making it more difficult to switch off quickly. Our brains release a hormone called melatonin at night that helps regulate the timing of our sleep cycle by telling our bodies that it is dark. Supplementary melatonin is used by many as a sleep aid – while there’s some haziness as to how directly this helps us to drift off in the first place, the simple truth is that if you settle down expecting to have a better night’s sleep, you likely will. 

Temperature and Sleep

Temperature also has an important connection with our body’s circadian rhythm. Similar to the repeating patterns of light that we get used to with the day and night cycles of the Earth, we also adapt to the typical rising and falling of daily temperature. Our body temperature drops shortly before the onset of sleep, as we begin to relax and feel drowsy. A warm bath before bed can help to enhance this sensation, as our body then cools right down again afterward. Think of how you feel during a cold shower in the morning for an idea of how temperature can affect your sense of alertness! 

Cold Weather: Sleeping in cooler temperatures is typically beneficial, however, extremely cold weather can be disruptive to your sleep pattern. Being uncomfortably cold under covers can be a huge disturbance when trying to wind down and fall asleep. Colder temperatures are also associated with dry air, which can irritate the respiratory system causing sudden coughs, dry mouth, and snoring. 

Hot Weather: Trying to sleep during hot weather spells can be extremely challenging, increased body temperature at the time of desired sleep can result in restfulness which in turn can make you feel more awake, and in some cases even insomnia. An overly warm sleeping environment can lead to reduced experience of REM sleep. 

The exact temperatures that will assist in drifting off will differ from person to person (along with various other factors such as clothing and bedding) but you should generally aim to have a bedroom with a cooler air temperature between 16-21°C to encourage your body to catch some z’s. Not sure how warm your bedroom is? Find out with a straightforward home thermometer.

Humidity and Sleep

Alongside temperature, the relative humidity of your bedroom can also make a big difference to general comfort and in-turn the quality of your sleep. Warm, moist air can feel sticky and heavy, undoing much of the relaxation you may otherwise feel. Without being completely comfortable it can be hard to unwind - or even to stay asleep once you finally have managed to. The feelings of frustration here only serve to make the problem worse, so ensuring that humidity isn’t a factor can be crucial to avoiding a restless night. Achieving a relative humidity level of between 30-50% in your bedroom should lead to a better environment for overall sleep quality. Air conditioning units and dehumidifiers can help you to achieve this, while you can track the humidity level using a hygrometer. Alternatively, a desktop weather station will be able to monitor the temperature and humidity all in one for you.

Barometric Pressure and Sleep

Many of us experience increased sensations of arthritis and other joint pain during periods of falling barometric pressure. Though no concrete relationship between the two has been proven, sufferers of such conditions will likely be aware of how these can feel more troublesome at various times of the year depending on what the weather is doing. A prominent theory suggests that the tiny tissues surrounding our joints expand slightly during periods of low pressure, which can put additional strain on the joint. Likely to cause discomfort when trying to drift off to sleep, but anticipating it by monitoring pressure patterns with a barometer can help remedy the issue before it becomes too disruptive. 

The Full Moon

Hospitals and veterinary practices anecdotally report having more emergencies during the full moon, but the true effect of the moon on humans and animals is little understood. That said, light is being shed on the impact the moon has on our ability to get a good night's rest. Researchers in Brazil and Switzerland have examined the impact of the lunar cycle on sleep, and have found during the full moon that participants:

  • took, on average, five minutes more to fall asleep
  • spent 30% less time in deep sleep
  • slept for an average of 20 minutes less than normal
  • reported having poorer sleep
  • had reduced levels of the hormone melatonin
  • A moon clock, or a desktop weather station with moon phase functionality, can help you to better understand your sleep at all phases of the lunar cycle and unravel the connection for yourself.

    The Impact of Storms

    The sound of weather can also impact sleep quality – and there’s a fine line determining the role it plays depending on the severity of the conditions outside. Drifting off while the wind howls or rain patters down outside can inspire feelings of cosiness and security – many of us use artificial rain sounds for this very purpose. But most of us have also likely woken up to a flash of lightning and a roar of thunder during a ferocious storm that reminds us just how powerful nature can be. Sadly, there isn’t a lot that can be done to prevent thunderstorms during certain periods of the year. By improving the overall quality of your sleep, you’ll hopefully be able to snooze right through to the morning!

    Conclusion:

    Learning how weather can affect your sleep, allows you to gain knowledge and implement methods to regulate your sleep patterns. Although you cannot control the ever-changing weather conditions, there are steps you can take to improve your sleep despite what's going on above the covers. These are, 

    • To help regulate room and body temperature, use fans or air conditioning if tackling an overly warm environment. For cooler sleeping conditions grab an extra blanket or consider piling on the layers. 
    • Block out natural light, especially during the summer months when darker skies are more limited. If you feel it is necessary, consider investing in some blackout curtains/blinds to keep your bedroom dark. 
    • To manage humidity levels consider purchasing a humidifier.
    • Get familiar with white noise, learning to fall asleep to conditions that are not exactly 'perfect' will aid in your ability to fall asleep in the event of a thunderstorm.  

    FAQs:

    • How does a sudden cold snap affect sleep?
      • A sudden drop in temperature can disrupt sleep by making it harder for your body to maintain its optimal sleep temperature. Your body naturally lowers its temperature to initiate sleep, so a cold environment can exaggerate this process, making it difficult to fall or stay asleep.
    • How do sudden weather changes impact people with sleep disorders?

      • Individuals with sleep disorders, like insomnia, may be more sensitive to environmental changes, including temperature fluctuations. This sensitivity can worsen their sleep difficulties, making it harder to maintain a consistent sleep pattern.
    • Why do I feel sleepier on cloudy or rainy days?

      • Cloudy or rainy days often mean less sunlight, which can reduce the production of serotonin, a hormone that helps you feel awake and alert. The lower light levels can also increase melatonin production, making you feel sleepier.
    • What is the circadian rhythm, and how does it relate to sleep?

      • The circadian rhythm is your body’s internal clock that regulates the sleep cycle over 24 hours. It is influenced by environmental cues, primarily light, which signals when it’s time to wake up or go to sleep.
    • How does reduced cabin pressure impact sleep on long-haul flights?

      • Reduced cabin pressure can lead to decreased oxygen levels, causing discomfort, headaches, and lightheadedness, making it harder to relax and fall asleep. The body’s need to adjust to the lower oxygen levels can also interfere with sleep quality.
    • Does living near the coast affect circadian rhythms?

      • Living near the coast can influence circadian rhythms due to the exposure to natural light and tidal patterns. The sound and timing of tides can serve as environmental cues for your internal clock with natural cycles, potentially leading to more regular sleep patterns.