Author: Emily Spillman
Nurse | Women’s Health & Fitness Coach
Abstract
Recent heatwaves have left many people feeling uncomfortable, but for those living with bladder, bowel, and pelvic floor symptoms, rising temperatures can bring additional challenges. Increased urgency, frequency, nocturia, constipation, leakage, and prolapse symptoms may all become more noticeable during periods of extreme heat.
This article explores five key reasons why pelvic health symptoms can worsen during a heatwave, including dehydration, changes in bowel function, increased fluid intake, bladder irritants, and disruptions to daily routines. It also explains how heat-related swelling and fluid shifts within the body may contribute to increased night-time urination.
Importantly, symptom flare-ups during hot weather do not mean you have gone backwards in your recovery. Understanding the factors that influence pelvic health can help you respond proactively, reduce anxiety around symptoms, and apply practical strategies to minimise their impact. The article concludes with evidence-informed tips on hydration, bladder and bowel habits, clothing choices, and self-management strategies to help you maintain pelvic health during periods of extreme heat.
Introduction
If I’m completely honest, I am not a hot weather person.
The recent heatwave was not my idea of fun. If I could wear a fan around my neck and somehow hide another one under my skirt, I absolutely would. I’m fairly certain my eyelids were sweating during the last heatwave!
With another spell of hot weather on the way, I wanted to talk about something that many women struggle with but don’t always connect the dots, which is that their bladder and pelvic floor symptoms seem to get worse when the temperature rises.
And it’s not just you.
I notice changes in my own body too. One thing I really struggle with is swollen ankles. When we’re hot, our blood vessels widen (vasodilate) to help us lose heat and cool down. Women also tend to rely a little more on vasodilation and less on sweating than men. Whilst that helps us regulate our temperature, it can also allow fluid to move from our blood vessels into the surrounding tissues, where it often settles in our feet and ankles.
Then, when we lie down at night, gravity is no longer keeping that fluid in our lower legs. The fluid re-enters the circulation, the kidneys filter it, and it ends up being excreted as urine. This means you may find yourself needing to get up and wee more during the night during a heatwave.
With more frequent extreme heat events predicted in the future, it is helpful to understand how hot weather can affect your bladder and pelvic floor.
If you’ve noticed more urgency, frequency, leakage, constipation, or prolapse symptoms recently, here are five possible reasons why.
First, an Important Reminder
If you’ve worked hard to improve your symptoms and then suddenly find they worsen during a heatwave, it doesn’t mean you’ve gone backwards.
Sometimes there are physical and mental stressors that are simply outside of our control. Heat is one of them.
When we understand what might be contributing to a symptom flare-up, we can often respond more effectively. Instead of catastrophising and thinking, “I’m back to square one,” we can recognise what’s happening, apply the tools we have, and get back on track more quickly.
Think of it as a temporary flare, not a failure.
5 Reasons Your Pelvic Health Symptoms May Worsen During a Heatwave
1. Dehydration Can Irritate Your Bladder
When you’re dehydrated, your urine becomes more concentrated.
Concentrated urine can irritate the bladder lining, which may result in:
- Increased urgency
- More frequent trips to the toilet
- A more sensitive bladder
- Greater awareness of bladder symptoms
Even mild dehydration can have an impact, so waiting until you’re very thirsty isn’t ideal.
2. Dehydration Can Worsen Constipation
Your bowel loves consistency, and hydration plays a key role.
If you’re not drinking enough, stools can become harder and more difficult to pass.
Constipation can:
- Take up space in the pelvis and reduce bladder capacity
- Increase urgency and frequency
- Lead to straining
- Increase pressure on the pelvic floor
- Make prolapse symptoms feel worse
The bladder and bowel are close neighbours, so when one is unhappy, the other often notices.
3. Drinking More Naturally Means More Wee
During hot weather, we rightly focus on drinking more fluids.
However, more fluid intake generally means more urine production.
Sometimes people become concerned that they’re needing the toilet more often and assume something is wrong. In many cases, this is simply a normal response to the increase in fluid intake.
The key is finding a balance between staying hydrated and avoiding large volumes of fluid in one go.
4. Summer Drinks Can Be Bladder Irritants
Hot weather often changes what we drink.
You may find yourself reaching for:
- Iced coffee
- Fizzy drinks
- Energy drinks
- Alcohol
- Citrus-based beverages
For some people, these drinks can irritate the bladder and increase symptoms such as urgency, frequency, and leakage.
This doesn’t mean you can never enjoy them, but if you’ve noticed an increase in symptoms, it may be worth looking at whether any summer favourites are contributing.
5. Changes in Routine and Increased Stress Can Affect Bladder Symptoms
Heatwaves often mean changes to our normal routines.
Perhaps you’re:
- Out of the house more
- Travelling
- Looking after children during school holidays
- Hosting family and friends
- Trying to juggle work, childcare, and the heat
These changes can alter your bladder habits. You might:
- Hold on longer because a toilet isn’t immediately available
- Start doing “just in case” wees
- Drink inconsistently throughout the day
- Become less aware of your normal toileting routine
For many people, there is also an element of increased stress and mental load. If the children are home for the holidays, routines are disrupted, or you’re feeling overwhelmed by the heat from a sensory perspective, you may notice your urgency symptoms become more noticeable.
The bladder and nervous system are closely connected. When we’re stressed, anxious, or feeling under pressure, the bladder can become more sensitive, leading to:
- Increased urgency
- More frequent toilet trips
- Greater awareness of bladder sensation
Top Tips for Looking After Your Pelvic Health in the Heat
I want to stress that while these interventions can help, if you are peri-post menopausal or postnatal then your symptoms could be driven by low oestrogen and while these interventions are still important, you need to replace the oestrogen and a June 2026 study in Urology analysed over 1.8 million women and found that those prescribed vaginal oestrogen had a significantly lower risk of sepsis and mortality when dealing with recurrent urinary tract infections.
Read more about vaginal health and incontinence in our blog
Stay Consistently Hydrated
Rather than drinking large amounts all at once, try to sip fluids regularly throughout the day.
This helps maintain hydration levels and keeps urine less concentrated.
🍑 Look After Your Bowels
Supporting bowel health is one of the best things you can do for your pelvic floor.
Try to:
- Stay hydrated
- Eat fibre-rich foods
- Stay physically active where possible
- Respond to the urge to open your bowels
🚻 Stick to Healthy Bladder Habits
Avoid swinging between holding on for hours and doing frequent “just in case” wees.
Aim for a comfortable, regular toileting pattern.
Be Aware of Potential Bladder Irritants
If symptoms have flared, consider whether these following drinks are playing a role:
- Caffeine
- Alcohol
- Fizzy drinks
- Highly acidic drinks
You don’t necessarily need to eliminate them completely, but becoming aware of patterns can be helpful.
Choose Breathable Underwear and Clothing
Hot weather creates a warm, moist environment around the vulval and perineal area.
Non-breathable fabrics, tight clothing, and staying in damp gym wear or swimwear for long periods can contribute to:
- Skin irritation
- Chafing
- Vulval discomfort
- Increased awareness of pelvic symptoms
- Discomfort if you’re managing leakage
Choosing breathable fabrics such as cotton and changing out of damp clothing promptly can help keep the area comfortable and healthy. If you are using incontinence pads, try using ones with zero fragrance and heavy bleaches and chemicals.
Elevate Swollen Legs and Feet if Needed
If, like me, you notice your ankles swelling during hot weather, gentle movement, elevating your legs when possible, use light compression hosiery and avoiding long periods of sitting or standing may help.
Just remember that some of that fluid may return to your circulation overnight, which can contribute to needing to pass urine more frequently at night.
Final Thoughts
If your pelvic health symptoms have worsened during a heatwave, you are not alone.
Hot weather places extra demands on the body. Changes in hydration, bowel habits, fluid balance, routine, and bladder irritants can all influence how your symptoms feel.
Most importantly, a symptom flare-up during a heatwave does not mean you’ve failed, gone backwards, or undone all your hard work.
Sometimes the challenge isn’t doing more, it’s recognising what’s changed, adjusting where you can, and giving yourself a bit of grace when circumstances are outside your control.
A temporary increase in symptoms is just that: temporary.
