The relationship between temperature and blood pressure is complicated. It's not just about the weather conditions but also includes other factors such as fever. For example, during hot weather, our bodies tend to release excess heat by dilating blood vessels, which can cause a temporary drop in blood pressure (per British Heart Foundation). On the other hand, cold weather can cause us to conserve body heat by constricting blood vessels and temporarily increasing blood pressure (per Mayo Clinic).
Fever can also affect blood pressure. Your body temperature rises when you get a fever, which can cause your heart to pump blood faster to release the extra heat. This, in turn, can increase your blood pressure. Also, fever- or infection-induced dehydration can cause a rise in blood pressure (per Healthline). Keeping yourself hydrated and cool during a fever can help you avoid negative impacts on your blood pressure.
It's additionally worth noting that these temperature-related changes are usually temporary and your blood pressure tends to return to normal levels once the fever subsides or the weather becomes more comfortable. However, if you're sensitive to temperature changes or you have underlying cardiovascular conditions, it's always best to check with a healthcare provider to monitor and manage your blood pressure in these situations.
