No, drinking water is not allowed during the fasting hours of Ramadan, which extend from dawn until sunset. Muslims abstain from all food and drink, including water, during these hours as part of their spiritual devotion and obedience to Allah. However, drinking water is permitted outside of the fasting hours, such as at night between sunset (Iftar) and dawn (Suhoor). If water is accidentally consumed during fasting hours, the fast is still valid, but care should be taken to avoid intentional consumption during the day.
Drinking adequate water during non-fasting hours is important to prevent dehydration and maintain health during the fasting period. Muslims are advised to drink plenty of water at Suhoor (pre-dawn meal) and Iftar (breaking fast) to stay well-hydrated throughout the day.