Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
Spouses who are not fasting for valid reasons—such as traveling—can have intimate relations during the daytime of Ramadan.
Answering your question, Dr. Wael Shehab, PhD in Islamic Studies from Al-Azhar University and currently the Imam of the Downtown Toronto Masjid in Canada, states:
If a husband and his wife are not fasting for a legal reason such as traveling, then it is OK for them to make love during the daytime of Ramadan as they are not fasting. They should make up for that day later on.
For more, see these fatws:
Broke Optional Fast with Sex: Expiation Required?
Sexual Thoughts Caused Ejaculation: Is My Fast Broken?
Repenting for Sex and Not Fasting in Ramadan: What to Do?
Can You Hug the Opposite Sex while Fasting?
Almighty Allah knows best.
Editor’s note: This fatwa is from Ask the Scholar’s archive and was originally published at an earlier date.