How Much Water Should I Drink During Pregnancy?
Aim for about 8–12 cups (2–3 litres) of fluids a day, more in hot weather, with exercise, or if you are vomiting. A good check: your urine should be pale straw-coloured, not dark. See our full hydration guide for more.
How much you need
Around 2–3 litres of fluids daily works for most. Water is best; milk and other drinks count, but limit sugary and caffeinated ones.
Why it matters
Good hydration supports your extra blood volume and amniotic fluid, and helps prevent constipation, urinary infections and headaches.
Full guide
For signs of dehydration and practical tips, read our detailed hydration guide.
Frequently asked questions
How much water per day?
About 8–12 cups (2–3 litres), more in heat, with exercise, or if vomiting.
What are signs I am dehydrated?
Dark urine, thirst, headache, dizziness, and Braxton-Hicks that ease when you drink.
Do other drinks count?
Yes, most fluids count, but limit caffeine and sugary drinks.
Eat well through every week 💜
See trimester-by-trimester nutrition in the complete 40-week guide.
40-Week GuideJoin The Circle